EP1819876B1 - Paper sizing agent - Google Patents
Paper sizing agent Download PDFInfo
- Publication number
- EP1819876B1 EP1819876B1 EP05816209A EP05816209A EP1819876B1 EP 1819876 B1 EP1819876 B1 EP 1819876B1 EP 05816209 A EP05816209 A EP 05816209A EP 05816209 A EP05816209 A EP 05816209A EP 1819876 B1 EP1819876 B1 EP 1819876B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- paper
- polymer
- weight
- paper size
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004513 sizing Methods 0.000 title abstract description 41
- 239000006185 dispersion Substances 0.000 claims abstract description 67
- 229920000642 polymer Polymers 0.000 claims abstract description 49
- 125000002091 cationic group Chemical group 0.000 claims abstract description 26
- 229920002472 Starch Polymers 0.000 claims abstract description 23
- 235000019698 starch Nutrition 0.000 claims abstract description 22
- 239000008107 starch Substances 0.000 claims abstract description 20
- 125000004433 nitrogen atom Chemical group N* 0.000 claims abstract description 19
- 238000006467 substitution reaction Methods 0.000 claims abstract description 5
- 239000000123 paper Substances 0.000 claims description 45
- 239000000203 mixture Substances 0.000 claims description 35
- -1 board Substances 0.000 claims description 22
- ZQXSMRAEXCEDJD-UHFFFAOYSA-N n-ethenylformamide Chemical compound C=CNC=O ZQXSMRAEXCEDJD-UHFFFAOYSA-N 0.000 claims description 22
- 229920001577 copolymer Polymers 0.000 claims description 19
- 125000000129 anionic group Chemical group 0.000 claims description 18
- 239000002270 dispersing agent Substances 0.000 claims description 15
- UYMKPFRHYYNDTL-UHFFFAOYSA-N ethenamine Chemical group NC=C UYMKPFRHYYNDTL-UHFFFAOYSA-N 0.000 claims description 13
- 239000011111 cardboard Substances 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229920003043 Cellulose fiber Polymers 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000012948 isocyanate Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 2
- 239000000539 dimer Substances 0.000 claims description 2
- 150000002513 isocyanates Chemical class 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 description 41
- 239000000178 monomer Substances 0.000 description 29
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 26
- 230000000052 comparative effect Effects 0.000 description 22
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 17
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 16
- 239000000243 solution Substances 0.000 description 16
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 12
- 235000002639 sodium chloride Nutrition 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000002253 acid Substances 0.000 description 11
- 230000007062 hydrolysis Effects 0.000 description 11
- 238000006460 hydrolysis reaction Methods 0.000 description 11
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 11
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 10
- 229920006317 cationic polymer Polymers 0.000 description 10
- 230000014759 maintenance of location Effects 0.000 description 10
- 239000002245 particle Substances 0.000 description 10
- 238000003860 storage Methods 0.000 description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 9
- WHOZNOZYMBRCBL-OUKQBFOZSA-N (2E)-2-Tetradecenal Chemical compound CCCCCCCCCCC\C=C\C=O WHOZNOZYMBRCBL-OUKQBFOZSA-N 0.000 description 8
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 8
- 150000003863 ammonium salts Chemical class 0.000 description 8
- 229940044654 phenolsulfonic acid Drugs 0.000 description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 7
- 150000007513 acids Chemical class 0.000 description 7
- 229910052783 alkali metal Inorganic materials 0.000 description 7
- 125000004432 carbon atom Chemical group C* 0.000 description 7
- 150000001735 carboxylic acids Chemical class 0.000 description 7
- 239000000084 colloidal system Substances 0.000 description 7
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 150000001340 alkali metals Chemical class 0.000 description 6
- 239000007859 condensation product Substances 0.000 description 6
- 150000002148 esters Chemical class 0.000 description 6
- 239000000155 melt Substances 0.000 description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 6
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 6
- 229920002401 polyacrylamide Polymers 0.000 description 6
- 229920001567 vinyl ester resin Polymers 0.000 description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 5
- 229920002261 Corn starch Polymers 0.000 description 5
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 5
- 229920001131 Pulp (paper) Polymers 0.000 description 5
- 150000001408 amides Chemical class 0.000 description 5
- 239000002585 base Substances 0.000 description 5
- 239000011436 cob Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 description 5
- 230000035515 penetration Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 159000000000 sodium salts Chemical class 0.000 description 5
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 5
- OSSNTDFYBPYIEC-UHFFFAOYSA-N 1-ethenylimidazole Chemical compound C=CN1C=CN=C1 OSSNTDFYBPYIEC-UHFFFAOYSA-N 0.000 description 4
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical class NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 4
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 229920002873 Polyethylenimine Polymers 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 4
- 150000001342 alkaline earth metals Chemical class 0.000 description 4
- 239000004202 carbamide Substances 0.000 description 4
- 239000008120 corn starch Substances 0.000 description 4
- 230000002209 hydrophobic effect Effects 0.000 description 4
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 4
- 239000011976 maleic acid Substances 0.000 description 4
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- SNOOUWRIMMFWNE-UHFFFAOYSA-M sodium;6-[(3,4,5-trimethoxybenzoyl)amino]hexanoate Chemical class [Na+].COC1=CC(C(=O)NCCCCCC([O-])=O)=CC(OC)=C1OC SNOOUWRIMMFWNE-UHFFFAOYSA-M 0.000 description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- HXVJQEGYAYABRY-UHFFFAOYSA-N 1-ethenyl-4,5-dihydroimidazole Chemical class C=CN1CCN=C1 HXVJQEGYAYABRY-UHFFFAOYSA-N 0.000 description 3
- DPBJAVGHACCNRL-UHFFFAOYSA-N 2-(dimethylamino)ethyl prop-2-enoate Chemical compound CN(C)CCOC(=O)C=C DPBJAVGHACCNRL-UHFFFAOYSA-N 0.000 description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 3
- FLCAEMBIQVZWIF-UHFFFAOYSA-N 6-(dimethylamino)-2-methylhex-2-enamide Chemical compound CN(C)CCCC=C(C)C(N)=O FLCAEMBIQVZWIF-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 235000019253 formic acid Nutrition 0.000 description 3
- 229920001519 homopolymer Polymers 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229920000962 poly(amidoamine) Polymers 0.000 description 3
- 150000003141 primary amines Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- JWYVGKFDLWWQJX-UHFFFAOYSA-N 1-ethenylazepan-2-one Chemical compound C=CN1CCCCCC1=O JWYVGKFDLWWQJX-UHFFFAOYSA-N 0.000 description 2
- XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 description 2
- WQMAANNAZKNUDL-UHFFFAOYSA-N 2-dimethylaminoethyl chloride Chemical compound CN(C)CCCl WQMAANNAZKNUDL-UHFFFAOYSA-N 0.000 description 2
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 2
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 description 2
- 229920000945 Amylopectin Polymers 0.000 description 2
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 description 2
- 235000018185 Betula X alpestris Nutrition 0.000 description 2
- 235000018212 Betula X uliginosa Nutrition 0.000 description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical class CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 229920000881 Modified starch Polymers 0.000 description 2
- 239000004368 Modified starch Substances 0.000 description 2
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical class OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- MPMBRWOOISTHJV-UHFFFAOYSA-N but-1-enylbenzene Chemical compound CCC=CC1=CC=CC=C1 MPMBRWOOISTHJV-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 2
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical class NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 2
- 150000005690 diesters Chemical class 0.000 description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical class OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- GFJVXXWOPWLRNU-UHFFFAOYSA-N ethenyl formate Chemical compound C=COC=O GFJVXXWOPWLRNU-UHFFFAOYSA-N 0.000 description 2
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 2
- 235000019426 modified starch Nutrition 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 229920001515 polyalkylene glycol Polymers 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 230000005588 protonation Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 125000001302 tertiary amino group Chemical group 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical class CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 description 1
- JWYRPOYJRRHHIL-UHFFFAOYSA-N 1-(oxiran-2-ylmethyl)piperidine Chemical compound C1CCCCN1CC1CO1 JWYRPOYJRRHHIL-UHFFFAOYSA-N 0.000 description 1
- FWQVHBXYJCMRDM-UHFFFAOYSA-N 1-ethenyl-2-ethyl-4,5-dihydroimidazole Chemical compound CCC1=NCCN1C=C FWQVHBXYJCMRDM-UHFFFAOYSA-N 0.000 description 1
- HFCLUHMYABQVOG-UHFFFAOYSA-N 1-ethenyl-2-ethylimidazole Chemical compound CCC1=NC=CN1C=C HFCLUHMYABQVOG-UHFFFAOYSA-N 0.000 description 1
- VDSAXHBDVIUOGV-UHFFFAOYSA-N 1-ethenyl-2-methyl-4,5-dihydroimidazole Chemical compound CC1=NCCN1C=C VDSAXHBDVIUOGV-UHFFFAOYSA-N 0.000 description 1
- BDHGFCVQWMDIQX-UHFFFAOYSA-N 1-ethenyl-2-methylimidazole Chemical compound CC1=NC=CN1C=C BDHGFCVQWMDIQX-UHFFFAOYSA-N 0.000 description 1
- MMFCEMSIUPCRLD-UHFFFAOYSA-N 1-ethenyl-4-methylimidazole Chemical compound CC1=CN(C=C)C=N1 MMFCEMSIUPCRLD-UHFFFAOYSA-N 0.000 description 1
- SHVBLBWXKTWTAK-UHFFFAOYSA-N 1-ethenyl-5-methylimidazole Chemical compound CC1=CN=CN1C=C SHVBLBWXKTWTAK-UHFFFAOYSA-N 0.000 description 1
- VOCDJQSAMZARGX-UHFFFAOYSA-N 1-ethenylpyrrolidine-2,5-dione Chemical compound C=CN1C(=O)CCC1=O VOCDJQSAMZARGX-UHFFFAOYSA-N 0.000 description 1
- BMVXCPBXGZKUPN-UHFFFAOYSA-N 1-hexanamine Chemical class CCCCCCN BMVXCPBXGZKUPN-UHFFFAOYSA-N 0.000 description 1
- XFEWMFDVBLLXFE-UHFFFAOYSA-N 1-isocyanatodecane Chemical compound CCCCCCCCCCN=C=O XFEWMFDVBLLXFE-UHFFFAOYSA-N 0.000 description 1
- YIDSTEJLDQMWBR-UHFFFAOYSA-N 1-isocyanatododecane Chemical compound CCCCCCCCCCCCN=C=O YIDSTEJLDQMWBR-UHFFFAOYSA-N 0.000 description 1
- GFLXBRUGMACJLQ-UHFFFAOYSA-N 1-isocyanatohexadecane Chemical compound CCCCCCCCCCCCCCCCN=C=O GFLXBRUGMACJLQ-UHFFFAOYSA-N 0.000 description 1
- RWCDAKQLMGCVLI-UHFFFAOYSA-N 1-isocyanatoicosane Chemical compound CCCCCCCCCCCCCCCCCCCCN=C=O RWCDAKQLMGCVLI-UHFFFAOYSA-N 0.000 description 1
- QWDQYHPOSSHSAW-UHFFFAOYSA-N 1-isocyanatooctadecane Chemical compound CCCCCCCCCCCCCCCCCCN=C=O QWDQYHPOSSHSAW-UHFFFAOYSA-N 0.000 description 1
- CSMJMAQKBKGDQX-UHFFFAOYSA-N 1-isocyanatotetradecane Chemical compound CCCCCCCCCCCCCCN=C=O CSMJMAQKBKGDQX-UHFFFAOYSA-N 0.000 description 1
- SJIXRGNQPBQWMK-UHFFFAOYSA-N 2-(diethylamino)ethyl 2-methylprop-2-enoate Chemical compound CCN(CC)CCOC(=O)C(C)=C SJIXRGNQPBQWMK-UHFFFAOYSA-N 0.000 description 1
- QHVBLSNVXDSMEB-UHFFFAOYSA-N 2-(diethylamino)ethyl prop-2-enoate Chemical compound CCN(CC)CCOC(=O)C=C QHVBLSNVXDSMEB-UHFFFAOYSA-N 0.000 description 1
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 description 1
- 229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 description 1
- YMDNODNLFSHHCV-UHFFFAOYSA-N 2-chloro-n,n-diethylethanamine Chemical compound CCN(CC)CCCl YMDNODNLFSHHCV-UHFFFAOYSA-N 0.000 description 1
- IGDLZDCWMRPMGL-UHFFFAOYSA-N 2-ethenylisoindole-1,3-dione Chemical compound C1=CC=C2C(=O)N(C=C)C(=O)C2=C1 IGDLZDCWMRPMGL-UHFFFAOYSA-N 0.000 description 1
- IEVADDDOVGMCSI-UHFFFAOYSA-N 2-hydroxybutyl 2-methylprop-2-enoate Chemical compound CCC(O)COC(=O)C(C)=C IEVADDDOVGMCSI-UHFFFAOYSA-N 0.000 description 1
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 1
- PPLUFUAHBMSEKM-UHFFFAOYSA-N 2-methylprop-2-enoic acid;2-methylpropyl prop-2-enoate Chemical compound CC(=C)C(O)=O.CC(C)COC(=O)C=C PPLUFUAHBMSEKM-UHFFFAOYSA-N 0.000 description 1
- WHRSAPITCBEUMU-UHFFFAOYSA-N 2-methylpropyl prop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(C)COC(=O)C=C WHRSAPITCBEUMU-UHFFFAOYSA-N 0.000 description 1
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 description 1
- FOGYNLXERPKEGN-UHFFFAOYSA-N 3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfopropyl)phenoxy]propane-1-sulfonic acid Chemical compound COC1=CC=CC(CC(CS(O)(=O)=O)OC=2C(=CC(CCCS(O)(=O)=O)=CC=2)OC)=C1O FOGYNLXERPKEGN-UHFFFAOYSA-N 0.000 description 1
- XUYDVDHTTIQNMB-UHFFFAOYSA-N 3-(diethylamino)propyl prop-2-enoate Chemical compound CCN(CC)CCCOC(=O)C=C XUYDVDHTTIQNMB-UHFFFAOYSA-N 0.000 description 1
- WWJCRUKUIQRCGP-UHFFFAOYSA-N 3-(dimethylamino)propyl 2-methylprop-2-enoate Chemical compound CN(C)CCCOC(=O)C(C)=C WWJCRUKUIQRCGP-UHFFFAOYSA-N 0.000 description 1
- UFQHFMGRRVQFNA-UHFFFAOYSA-N 3-(dimethylamino)propyl prop-2-enoate Chemical compound CN(C)CCCOC(=O)C=C UFQHFMGRRVQFNA-UHFFFAOYSA-N 0.000 description 1
- UWERUIGPWOVNGG-MDZDMXLPSA-N 3-[(e)-dec-1-enyl]oxolane-2,5-dione Chemical compound CCCCCCCC\C=C\C1CC(=O)OC1=O UWERUIGPWOVNGG-MDZDMXLPSA-N 0.000 description 1
- WVRNUXJQQFPNMN-VAWYXSNFSA-N 3-[(e)-dodec-1-enyl]oxolane-2,5-dione Chemical compound CCCCCCCCCC\C=C\C1CC(=O)OC1=O WVRNUXJQQFPNMN-VAWYXSNFSA-N 0.000 description 1
- NYYRRBOMNHUCLB-UHFFFAOYSA-N 3-chloro-n,n-dimethylpropan-1-amine Chemical compound CN(C)CCCCl NYYRRBOMNHUCLB-UHFFFAOYSA-N 0.000 description 1
- YAXXOCZAXKLLCV-UHFFFAOYSA-N 3-dodecyloxolane-2,5-dione Chemical class CCCCCCCCCCCCC1CC(=O)OC1=O YAXXOCZAXKLLCV-UHFFFAOYSA-N 0.000 description 1
- GNSFRPWPOGYVLO-UHFFFAOYSA-N 3-hydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCO GNSFRPWPOGYVLO-UHFFFAOYSA-N 0.000 description 1
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 description 1
- WZISPVCKWGNITO-UHFFFAOYSA-N 4-(diethylamino)-2-methylidenebutanamide Chemical compound CCN(CC)CCC(=C)C(N)=O WZISPVCKWGNITO-UHFFFAOYSA-N 0.000 description 1
- HBTKQKFURUBIHW-UHFFFAOYSA-N 4-(diethylamino)butyl prop-2-enoate Chemical compound CCN(CC)CCCCOC(=O)C=C HBTKQKFURUBIHW-UHFFFAOYSA-N 0.000 description 1
- QGXMPHBQJFXJCI-UHFFFAOYSA-N 4-(dimethylamino)butyl prop-2-enoate Chemical compound CN(C)CCCCOC(=O)C=C QGXMPHBQJFXJCI-UHFFFAOYSA-N 0.000 description 1
- NZHRBLQDOUHAQY-UHFFFAOYSA-N 4-bromo-n,n-diethylpentan-1-amine;hydrobromide Chemical compound Br.CCN(CC)CCCC(C)Br NZHRBLQDOUHAQY-UHFFFAOYSA-N 0.000 description 1
- NDWUBGAGUCISDV-UHFFFAOYSA-N 4-hydroxybutyl prop-2-enoate Chemical compound OCCCCOC(=O)C=C NDWUBGAGUCISDV-UHFFFAOYSA-N 0.000 description 1
- HDWNKEWYEDOKIZ-UHFFFAOYSA-N 5-(diethylamino)-2-methylidenepentanamide Chemical compound CCN(CC)CCCC(=C)C(N)=O HDWNKEWYEDOKIZ-UHFFFAOYSA-N 0.000 description 1
- ZWAPMFBHEQZLGK-UHFFFAOYSA-N 5-(dimethylamino)-2-methylidenepentanamide Chemical compound CN(C)CCCC(=C)C(N)=O ZWAPMFBHEQZLGK-UHFFFAOYSA-N 0.000 description 1
- LVGSUQNJVOIUIW-UHFFFAOYSA-N 5-(dimethylamino)-2-methylpent-2-enamide Chemical compound CN(C)CCC=C(C)C(N)=O LVGSUQNJVOIUIW-UHFFFAOYSA-N 0.000 description 1
- NFKIMJJASFDDJG-UHFFFAOYSA-N 5-amino-N,N-diethyl-2-methylpent-2-enamide Chemical compound NCCC=C(C(=O)N(CC)CC)C NFKIMJJASFDDJG-UHFFFAOYSA-N 0.000 description 1
- ALXUOLQRSSGTMU-UHFFFAOYSA-N 6-(diethylamino)-2-methylhex-2-enamide Chemical compound CCN(CC)CCCC=C(C)C(N)=O ALXUOLQRSSGTMU-UHFFFAOYSA-N 0.000 description 1
- 239000007848 Bronsted acid Substances 0.000 description 1
- AUCHZDKEJRCNAS-UHFFFAOYSA-N C=C=O.C=C=O.C(CCCCCCCCCCCCCCC)(=O)OCCCCCCCCCCCCCCCCCC Chemical compound C=C=O.C=C=O.C(CCCCCCCCCCCCCCC)(=O)OCCCCCCCCCCCCCCCCCC AUCHZDKEJRCNAS-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- XBPCUCUWBYBCDP-UHFFFAOYSA-N Dicyclohexylamine Chemical class C1CCCCC1NC1CCCCC1 XBPCUCUWBYBCDP-UHFFFAOYSA-N 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- 235000019759 Maize starch Nutrition 0.000 description 1
- 240000003183 Manihot esculenta Species 0.000 description 1
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920002614 Polyether block amide Polymers 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000011054 acetic acid Nutrition 0.000 description 1
- 150000003926 acrylamides Chemical class 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- RCEORVKQNSLBJN-CLFAGFIQSA-N bis[(z)-octadec-9-enyl] carbonate Chemical compound CCCCCCCC\C=C/CCCCCCCCOC(=O)OCCCCCCCC\C=C/CCCCCCCC RCEORVKQNSLBJN-CLFAGFIQSA-N 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- BPOZNMOEPOHHSC-UHFFFAOYSA-N butyl prop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCCCOC(=O)C=C BPOZNMOEPOHHSC-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 150000001720 carbohydrates Chemical group 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001733 carboxylic acid esters Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 125000004985 dialkyl amino alkyl group Chemical group 0.000 description 1
- 125000004663 dialkyl amino group Chemical group 0.000 description 1
- 150000001470 diamides Chemical class 0.000 description 1
- WASQWSOJHCZDFK-UHFFFAOYSA-N diketene Chemical compound C=C1CC(=O)O1 WASQWSOJHCZDFK-UHFFFAOYSA-N 0.000 description 1
- 238000001493 electron microscopy Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- MEGHWIAOTJPCHQ-UHFFFAOYSA-N ethenyl butanoate Chemical compound CCCC(=O)OC=C MEGHWIAOTJPCHQ-UHFFFAOYSA-N 0.000 description 1
- FAFWKDXOUWXCDP-UHFFFAOYSA-N ethenylurea Chemical compound NC(=O)NC=C FAFWKDXOUWXCDP-UHFFFAOYSA-N 0.000 description 1
- 229940052303 ethers for general anesthesia Drugs 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 229940083124 ganglion-blocking antiadrenergic secondary and tertiary amines Drugs 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002655 kraft paper Substances 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 229940050176 methyl chloride Drugs 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- 229940105132 myristate Drugs 0.000 description 1
- WFKDPJRCBCBQNT-UHFFFAOYSA-N n,2-dimethylprop-2-enamide Chemical compound CNC(=O)C(C)=C WFKDPJRCBCBQNT-UHFFFAOYSA-N 0.000 description 1
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 description 1
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 1
- YGKXCLZSNFVFQR-UHFFFAOYSA-N n-butyl-n-(oxiran-2-ylmethyl)butan-1-amine Chemical compound CCCCN(CCCC)CC1CO1 YGKXCLZSNFVFQR-UHFFFAOYSA-N 0.000 description 1
- GORGQKRVQGXVEB-UHFFFAOYSA-N n-ethenyl-n-ethylacetamide Chemical compound CCN(C=C)C(C)=O GORGQKRVQGXVEB-UHFFFAOYSA-N 0.000 description 1
- PNLUGRYDUHRLOF-UHFFFAOYSA-N n-ethenyl-n-methylacetamide Chemical compound C=CN(C)C(C)=O PNLUGRYDUHRLOF-UHFFFAOYSA-N 0.000 description 1
- OFESGEKAXKKFQT-UHFFFAOYSA-N n-ethenyl-n-methylformamide Chemical compound C=CN(C)C=O OFESGEKAXKKFQT-UHFFFAOYSA-N 0.000 description 1
- RQAKESSLMFZVMC-UHFFFAOYSA-N n-ethenylacetamide Chemical compound CC(=O)NC=C RQAKESSLMFZVMC-UHFFFAOYSA-N 0.000 description 1
- IUWVWLRMZQHYHL-UHFFFAOYSA-N n-ethenylpropanamide Chemical compound CCC(=O)NC=C IUWVWLRMZQHYHL-UHFFFAOYSA-N 0.000 description 1
- RCLLINSDAJVOHP-UHFFFAOYSA-N n-ethyl-n',n'-dimethylprop-2-enehydrazide Chemical compound CCN(N(C)C)C(=O)C=C RCLLINSDAJVOHP-UHFFFAOYSA-N 0.000 description 1
- SWPMNMYLORDLJE-UHFFFAOYSA-N n-ethylprop-2-enamide Chemical compound CCNC(=O)C=C SWPMNMYLORDLJE-UHFFFAOYSA-N 0.000 description 1
- NEKXUGUSHFDYLZ-UHFFFAOYSA-N n-methyl-n-(oxiran-2-ylmethyl)aniline Chemical compound C=1C=CC=CC=1N(C)CC1CO1 NEKXUGUSHFDYLZ-UHFFFAOYSA-N 0.000 description 1
- YPHQUSNPXDGUHL-UHFFFAOYSA-N n-methylprop-2-enamide Chemical compound CNC(=O)C=C YPHQUSNPXDGUHL-UHFFFAOYSA-N 0.000 description 1
- WDFKEEALECCKTJ-UHFFFAOYSA-N n-propylprop-2-enamide Chemical compound CCCNC(=O)C=C WDFKEEALECCKTJ-UHFFFAOYSA-N 0.000 description 1
- XFHJDMUEHUHAJW-UHFFFAOYSA-N n-tert-butylprop-2-enamide Chemical compound CC(C)(C)NC(=O)C=C XFHJDMUEHUHAJW-UHFFFAOYSA-N 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 150000003009 phosphonic acids Chemical class 0.000 description 1
- 229920002006 poly(N-vinylimidazole) polymer Polymers 0.000 description 1
- 229920000371 poly(diallyldimethylammonium chloride) polymer Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920006316 polyvinylpyrrolidine Polymers 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 229920001592 potato starch Polymers 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- BWYYYTVSBPRQCN-UHFFFAOYSA-M sodium;ethenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C=C BWYYYTVSBPRQCN-UHFFFAOYSA-M 0.000 description 1
- 235000020354 squash Nutrition 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- WRPMUZXHQKAAIC-ZZEZOPTASA-N stearyl oleate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCCCCCC\C=C/CCCCCCCC WRPMUZXHQKAAIC-ZZEZOPTASA-N 0.000 description 1
- RINCXYDBBGOEEQ-UHFFFAOYSA-N succinic anhydride Chemical class O=C1CCC(=O)O1 RINCXYDBBGOEEQ-UHFFFAOYSA-N 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 125000005208 trialkylammonium group Chemical group 0.000 description 1
- PUVAFTRIIUSGLK-UHFFFAOYSA-M trimethyl(oxiran-2-ylmethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CC1CO1 PUVAFTRIIUSGLK-UHFFFAOYSA-M 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 229960000834 vinyl ether Drugs 0.000 description 1
- ZTWTYVWXUKTLCP-UHFFFAOYSA-N vinylphosphonic acid Chemical compound OP(O)(=O)C=C ZTWTYVWXUKTLCP-UHFFFAOYSA-N 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical compound OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 description 1
- 229940100445 wheat starch Drugs 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
- D21H17/08—Isocyanates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
- D21H17/15—Polycarboxylic acids, e.g. maleic acid
- D21H17/16—Addition products thereof with hydrocarbons
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/17—Ketenes, e.g. ketene dimers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/35—Polyalkenes, e.g. polystyrene
Definitions
- the invention relates to a paper sizing agent comprising a stable aqueous dispersion of a reactive sizing agent, a process for its preparation and its use for sizing paper, board and cardboard.
- Reactive sizing agents such as alkyl ketene dimers are widely used for sizing paper, board and board.
- Reactive sizing agents are usually sold as ready-to-use dispersions. They usually contain cationic polymers such as cationic starch or synthetic cationic polymers which impart substantivity to cellulose to the reactive sizing agents and / or act as protective colloids.
- the sizing dispersions In order for the sizing dispersions to be suitable for use, they must be sufficiently stable to viscosity so that they remain pumpable and dilutable until they are added to the paper machine. In practice, the dispersions often have to remain thin for several weeks at temperatures up to 40 ° C. These requirements are difficult to meet due to the inherent instability of colloidal systems. In many cases, the viscosity of the dispersions increases sharply until they can no longer be pumped or the dispersions coagulate. The higher the content of the reactive size dispersions, the more pronounced are the problems.
- alkyl diketene (AKD) dispersions with cationic starch as a protective colloid and an anionic dispersant as a stabilizer are known.
- AKD dispersions which contain a protective colloid in the form of a copolymer of N-vinylpyrrolidone and N-vinylimidazole or a condensation product based on polyethyleneimines.
- AKD dispersions which contain as protective colloid reaction products of polymers containing amino groups from the group of polymers containing vinylamine units, polyamidoamines and polymaidoamines grafted with polyethyleneimine with diketenes in a weight ratio of polymer to diketene of 10,000: 1 to 1: 3.
- the object of the invention is to provide paper sizing agents based on aqueous dispersions of reactive sizing agents which have a good sizing effect and sufficient viscosity stability.
- the paper size additives of the invention contain from 1 to 50% by weight of reactive sizing agent, based on the total weight of the paper sizing agent.
- stable dispersion is intended to mean that the dispersion remains liquid when stored for 4 weeks at 40 ° C and does not coagulate.
- linear polymer is meant a polymer that is substantially free of branching and crosslinking.
- Polyalkyleneimines such as in particular polyethylenimines, are not considered to be “linear polymers” due to their branched via tertiary amino groups structure.
- basic nitrogen atoms are those nitrogen atoms which can be protonated in aqueous solution by a Bronsted acid.
- Basic nitrogen atoms are in particular primary, secondary and tertiary amino groups, of which primary amino groups are preferred.
- the basic nitrogen atoms in the nitrogen-containing polymer are preferably at least 90 mol%, in particular substantially quantitatively protonated.
- the protonation can be carried out by reaction with a mineral acid, such as hydrochloric acid, sulfuric acid or phosphoric acid, but is preferably carried out by reaction with a carboxylic acid.
- Suitable carboxylic acids are, above all, formic acid, acetic acid, propionic acid, oxalic acid, tartaric acid, citric acid and the like.
- Substantially quantitative protonation is obtained when the nitrogen-containing polymer is adjusted to a pH of less than 5 with the chosen acid.
- the nitrogen-containing polymer used in the invention contains at least 3 mmol / g, preferably at least 5 mmol / g basic nitrogen atoms, especially 7.5 to 23 mmol / g, and most preferably 12 to 18 mmol / g.
- molar fraction refers to the monomer composition of the polymer.
- the average molecular weight Mw of the nitrogen-containing polymer is e.g. 500 to 10 million, preferably 750 to 5 million and particularly preferably 1 000 to 2 million (determined by light scattering).
- This molar mass range corresponds, for example, to K values of 30 to 150, preferably 60 to 90 (determined according to H. Fikentscher in 5% strength aqueous sodium chloride solution at 25 ° C., a pH of 7 and a polymer concentration of 0.5% by weight. ).
- Suitable nitrogen-containing polymers include hydrolysis products of homopolymers and copolymers of N-vinylcarboxamides and / or N-vinylcarboximides.
- the acyl group (s) is cleaved off by the action of acids, bases or enzymes to form vinylamine units.
- Suitable N-vinylcarboxamides are generally open-chain and cyclic N-vinylcarboxamides.
- Preferred N-vinylcarboxamides are open-chain N-vinylcarboxamides, in particular those open-chain N-vinylcarboxamides whose hydrolysis yields a primary amine.
- Examples of particularly suitable N-vinylcarboxamides are N-vinylformamide, N-vinyl-N-methylformamide, N-vinylacetamide, N-vinyl-N-methylacetamide, N-vinyl-N-ethylacetamide and N-vinylpropionamide, in particular N-vinylformamide.
- suitable N-vinylimides are N-vinylsuccinimide and N-vinylphthalimide. The monomers mentioned can be polymerized either alone or in mixture with one another or together with other monomers.
- Vinylamine containing polymers are z. B. from the US-A-4,421,602 . US-A 5,334,287 . EP-A 0 216 387 . US-A 5,981,689 . WO-A 00/63295 and US-A 6,121,409 known.
- Suitable monoethylenically unsaturated monomers which are copolymerized with the N-vinylcarboxamides are all compounds which can be copolymerized therewith.
- vinyl esters of saturated carboxylic acids of 1 to 6 carbon atoms such as vinyl formate, vinyl acetate, vinyl propionate and vinyl butyrate and vinyl ethers such as C 1 - to C 6 -alkyl vinyl ethers, for example methyl or ethyl vinyl ether.
- Suitable comonomers are esters, amides and nitriles of ethylenically unsaturated C 3 - to C 6 -carboxylic acids, for example methyl acrylate, methyl methacrylate, ethyl acrylate and ethyl methacrylate, acrylamide and methacrylamide and also acrylonitrile and methacrylonitrile.
- carboxylic acid esters are derived from glycols or polyalkylene glycols, wherein in each case only one OH group is esterified, e.g. Hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate and acrylic acid monoesters of polyalkylene glycols having a molecular weight of 500 to 10,000.
- Suitable comonomers are amides of ethylenically unsaturated carboxylic acids such as acrylamide, methacrylamide and N-alkyl mono- and diamides of monoethylenically unsaturated carboxylic acids having alkyl radicals of 1 to 6 carbon atoms, e.g. N-methylacrylamide, N, N-dimethylacrylamide, N-methylmethacrylamide, N-ethylacrylamide, N-propylacrylamide and tert-butylacrylamide.
- amides of ethylenically unsaturated carboxylic acids such as acrylamide, methacrylamide and N-alkyl mono- and diamides of monoethylenically unsaturated carboxylic acids having alkyl radicals of 1 to 6 carbon atoms, e.g. N-methylacrylamide, N, N-dimethylacrylamide, N-methylmethacrylamide, N-ethylacrylamide, N-propylacrylamide and ter
- N-vinylpyrrolidone N-vinylcaprolactam
- acrylonitrile methacrylonitrile
- N-vinylimidazole substituted N-vinylimidazoles
- N-vinyl-2-methylimidazole N-vinyl-4-methylimidazole
- N-vinyl-5-methylimidazole N-vinyl-2-ethylimidazole
- N-vinylimidazolines such as N-vinylimidazoline, N-vinyl-2-methylimidazoline and N- vinyl-2-ethylimidazoline.
- Such copolymers preferably contain at least 50 mol% of at least one N-vinylcarboxamide in copolymerized form.
- the comonomers are preferably free of acid groups.
- N-vinylformamide homopolymers or N-vinylformamide copolymers for example vinyl formate, vinyl acetate, vinyl propionate, acrylonitrile, N-vinylcaprolactam, N-vinylurea, N-vinylpyrrolidone or C 1 -C 6 Alkyl vinyl ethers whose N-vinylformamide units are then hydrolyzed to N-vinylamine units to a degree of hydrolysis of preferably 25 to 100 mol%, more preferably 50 to 100 mol% and most preferably 70 to 100 mol%.
- the hydrolysis of the above-described polymers is carried out by known methods by the action of acids, bases or enzymes.
- acids are used as hydrolyzing agents
- the vinylamine units of the polymers are present as the ammonium salt, while hydrolysis with bases gives rise to the free amino groups.
- the vinylamine polymers are preferably used in salt-free form.
- Salt-free aqueous solutions can be prepared, for example, from the salt-containing polymer solutions described above by means of ultrafiltration on suitable membranes at separation limits of, for example, 1,000 to 500,000 daltons, preferably 10,000 to 300,000 daltons.
- Preferred vinylamine polymers are vinylamine homopolymers having a degree of hydrolysis of from 25 to 100 mol%, and from 25 to 100 mol% hydrolyzed copolymers of vinylformamide and vinyl acetate, vinyl alcohol, vinylpyrrolidone or acrylamide, in each case having K values of from 30 to 150, in particular 60 until 90.
- nitrogen-containing polymer one may use polymers containing polymerized units of monomers having side groups comprising basic nitrogen atoms, or their copolymers with monomers having no (basic) nitrogen atoms in an appropriate ratio.
- Suitable monomers having side groups comprising basic nitrogen atoms are e.g. Allylamine, basic acrylates, e.g. Dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl acrylate, diethylaminoethyl methacrylate, dimethylaminopropyl acrylate, dimethylaminopropyl methacrylate, diethylaminopropyl acrylate, dimethylaminobutyl acrylate and diethylaminobutyl acrylate; basic (meth) acrylamides, e.g.
- Suitable monomers without (basic) nitrogen atoms are those mentioned above.
- cationic starch and "cationically modified starch” are used interchangeably herein. Suitable cationic starches are commercially available.
- the starting starch can be any type of starch, such as. Potato starch, corn starch, wheat starch, waxy maize starch and tapioca starch. Starches having an amylopectin content of more than 50% by weight, preferably 80 to 100% by weight, are preferred, with those having an amylopectin content of at least 90% by weight being particularly preferred.
- cationizing agents are dialkylaminoalkyl epoxides and dialkylaminoalkyl halides. Instead of the alkyl groups, the cationizing agents may also contain aryl groups.
- Preferred cationizing agents are, for example, N, N-dimethylaminoethyl chloride, N, N-diethylaminoethyl chloride, N, N-dimethylaminopropyl chloride, 3-dibutylamino-1,2-epoxypropane, 2-bromo-5-diethylaminopentane hydrobromide, N- (2,3-epoxypropyl ) -piperidine, 2,3-epoxypropyltrimethylammonium chloride and N, N- (2,3-epoxypropyl) -methylaniline.
- hydrochloric acid or other salts can also be used.
- the reaction between the starting starch and the cationizing reagent is preferably carried out in an alkaline medium.
- the proportion of reagent to be used depends on the desired degree of substitution.
- the degree of substitution is the ratio of cationic group to carbohydrate unit (i.e., glucose unit). He can assume a maximum value of 3.
- Suitable reactive sizing agents for the paper sizing agents according to the invention are, for example, C 12 - to C 22 -alkyl ketene dimers, C 5 - to C 22 -alkyl or C 5 - to C 22 -alkenylsuccinic anhydrides, C 12 - to C 36 -alkyl isocyanates and / or organic isocyanates, such as Dodecyl isocyanate, octadecyl isocyanate, tetradecyl isocyanate, hexadecyl isocyanate, eicosyl isocyanate and decyl isocyanate.
- Preferably used engine sizing agents are alkyl ketene dimers and long-chain alkyl or alkenylsuccinic anhydrides.
- alkylketene dimers examples include tetradecyldiketene, stearydikethene, lauryldiketen, palmityldiketen, oleyldiketen, Behenyldiketen or mixtures thereof. Also suitable are alkyldiketenes having different alkyl groups, such as stearyl palmitate diketene, behenylstearyl diketene, behenylenyldiketene or palmitylbehenyldiketene. Stearyldiketen, Palmityldiketen, Behenyldiketen or mixtures of Behenyldiketen and Stearyldiketen are preferably used.
- Suitable reactive sizing agents substituted succinic anhydrides are, for example, decenylsuccinic anhydride, n-Octadecenylbemsteinklareanhydrid, dodecenylsuccinic anhydride and n-Hexadecenylbernsteinklahydrid.
- the aqueous dispersions according to the invention usually have a content of reactive sizes of from 1 to 50% by weight, based on the total weight of the dispersion.
- the dispersions have a content of 1 to 50 wt .-%, preferably 5 to 35 wt.%, Based on the total weight of the dispersion, of C 12 to C 22 alkyldiketenes.
- C 5 - to C 22 -alkyl or C 5 - to C 22 -alkenyl-succinic anhydrides their content is, for example, 1 to 25 wt .-%, preferably 2 to 10 wt .-%, based on the total weight of the dispersion.
- the sizing agents of the present invention typically contain an anionic dispersant.
- the content of anionic dispersants in the aqueous dispersion is for example 0.01 to 5 wt .-%, preferably 0.01 to 2.5 wt .-% and most preferably 0.1 to 1 wt .-%, based on the reactive.
- the anionic dispersants may be in the form of the free acids, the alkali metal, alkaline earth metal and / or ammonium salts.
- the ammonium salts can be derived from both ammonia and from primary, secondary and tertiary amines, for example, the ammonium salts of dimethylamine, trimethylamine, hexylamine, cyclohexylamine, dicyclohexylamine, ethanolamine, diethanolamine and triethanolamine are.
- the condensation products described above are known and commercially available. They are prepared by condensing said components, it being possible to use the corresponding alkali metal, alkaline earth metal or ammonium salts instead of the free acids.
- Suitable catalysts in the condensation are, for example, acids such as sulfuric acid, p-toluenesulfonic acid and phosphoric acid.
- Naphthalenesulfonic acid or its alkali metal salts are condensed with formaldehyde preferably in a molar ratio of 1: 0.1 to 1: 2 and usually in a molar ratio of 1: 0.5 to 1: 1.
- the molar ratio for the production of condensates of phenol, phenolsulfonic acid and formaldehyde is also in the range given above, using any mixtures of phenol and phenolsulfonic acid instead of naphthalenesulfonic acid in the condensation with formaldehyde.
- phenolsulfonic acid instead of phenolsulfonic acid, it is also possible to use the alkali metal and ammonium salts of phenolsulfonic acid.
- the condensation of the abovementioned starting materials may optionally be carried out additionally in the presence of urea.
- urea based on naphthalenesulfonic acid or on the mixture of phenol and phenolsulfonic acid, 0.1 to 5 moles of urea are used per mole of naphthalenesulfonic acid or per mole of the mixture of phenol and phenolsulfonic acid.
- the condensation products have, for example, molar masses in the range from 800 to 100,000, preferably 1,000 to 30,000 and in particular from 4,000 to 25,000.
- anionic dispersants are salts which are obtained, for example, by neutralizing the condensation products with lithium hydroxide, sodium hydroxide, Potassium hydroxide or ammonia receives.
- the pH of the salts is, for example, in the range of 7 to 10.
- anionic dispersants are lignosulfonic acid and its alkali metal, alkaline earth metal or ammonium salts.
- amphiphilic copolymers contain as hydrophilic monomers (b), for example, C 3 - to C 10 - monoethylenically unsaturated carboxylic acids or their anhydrides, 2-acrylamido-2-methylpropanesulfonic acid, vinylsulfonic acid, styrenesulfonic acid, vinylphosphonic acid, salts of said monomers or mixtures thereof as hydrophilic monomers polymerized in an anionic group.
- hydrophilic monomers (b) for example, C 3 - to C 10 - monoethylenically unsaturated carboxylic acids or their anhydrides, 2-acrylamido-2-methylpropanesulfonic acid, vinylsulfonic acid, styrenesulfonic acid, vinylphosphonic acid, salts of said monomers or mixtures thereof as hydrophilic monomers polymerized in an anionic group.
- Preferred anionic dispersants are copolymers of maleic anhydride with C 4 - to C 12 -olefins, more preferably C 8 -olefins, such as octene-1 and düsobutene. Very particular preference is Düsobuten.
- the molar ratio between maleic anhydride and olefin is for example in the range 0.9: 1 to 3: 1, preferably from 0.95: 1 to 1.5: 1.
- These copolymers are preferably used in hydrolyzed form as aqueous solution or dispersions, wherein the anhydride group is present open and the carboxyl groups are preferably partially or completely neutralized.
- alkali metal bases such as sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate
- alkaline earth salts such as calcium hydroxide, calcium carbonate, magnesium hydroxide, ammonia, primary, secondary or tertiary amines, such as triethylamine, triethanolamine, diethanolamine, ethanolamine, morpholine etc.
- amphiphilic free acid-free copolymers are used in the form of water-soluble salts, e.g. the corresponding alkali metal, alkaline earth metal and ammonium salts are used.
- the molecular weight Mw of the amphiphilic copolymers is, for example, 800 to 250,000, usually 1,000 to 100,000 and is preferably in the range from 3,000 to 20,000, in particular from 1,500 to 10,000.
- the acid numbers of the amphiphilic copolymers are, for example, 50 to 500 , preferably 150 to 300 mg KOH / g polymer.
- aqueous dispersions according to the invention may contain further components, such as, for example, non-cellulose-reactive hydrophobic substances which contribute to improving the stability and are described, for example, in EP-A-437 764 and EP-A-658 228.
- Suitable non-cellulose-reactive substances are, for example, fatty acids, amides and esters as well as waxes.
- Examples thereof, but not exhaustive, are stearyl behenyl ester, myristate stearyl, stearic isododecyl ester, dioleyl carbonate, oleic acid stearyl ester, oleyl N, N-distearyl urethane, parrafin, di-oleic acid glycerol ester, tris-oleic acid glycerol ester and tris-stearic acid glycerol ester.
- Suitable monomers of group (a) are styrene, acrylonitrile, methacrylonitrile or mixtures of styrene and acrylonitrile or of styrene and methacrylonitrile.
- monomers of group (b) are used acrylic acid and / or methacrylic acid esters of C 1 - to C 18 -alcohols and / or vinyl esters of saturated C 2 - to C 4 -carboxylic acids.
- monomer of group (b) butyl acrylate and butyl methacrylate, for example, acrylic acid isobutyl acrylate, acrylic acid n-butyl acrylate and methacrylic acid isobutyl acrylate.
- Examples of monomers of group (c) are butadiene, isoprene, C 3 to C 5 monoethylenically unsaturated carboxylic acids, acrylamidomethylpropanesulfonic acid, sodium vinylsulfonate, vinylimidazole, N-vinylformamide, acrylamide, methacrylamide, N-vinylimidazoline and cationic polymers such as dimethylaminopropylmethacrylamide or dimethylaminoethylacrylate-methochloride. From 1 to 32 parts by weight of a monomer mixture of components (a) to (c) are used per 1 part by weight of the copolymer.
- the monomers of components (a) and (b) can be copolymerized in any ratio, for example in a molar ratio of 0.1: 1 to 1: 0.1. If necessary, the monomers of group (c) are used to modify the properties of the copolymers. Details on the preparation of these additional polymer dispersions can be found in the WO-A-96/31650 and the literature quoted there.
- polymer dispersions are used in the aqueous dispersions of reactive sizes according to the invention, preference is given to those which contain cationic polymers such as dimethylaminopropylmethacrylamide and / or dimethylaminoethyl acrylate in combination with styrene, acrylonitrile, butadiene and / or acrylic acid esters.
- cationic polymers such as dimethylaminopropylmethacrylamide and / or dimethylaminoethyl acrylate in combination with styrene, acrylonitrile, butadiene and / or acrylic acid esters.
- polymer dispersions When such polymer dispersions are used, their content is generally 25 to 300% by weight, preferably 50 to 250% by weight and more preferably 75 to 200% by weight, based on the reactive sizing agent.
- the invention further provides a process for the preparation of the aqueous dispersions of reactive sizes according to the invention.
- the reactive sizing agents are usually heated to a temperature above their melting point and emulsified in molten form in water under the action of shear forces.
- the liquid alkenyl succinic anhydride can be emulsified already at room temperature.
- lipophilic substances such as fatty acids, waxes, resin acids and resins, fatty acid amides or esters, the melting point of the reactive sizing agent may optionally be lowered, thereby improving the stability of the resulting dispersion.
- the dispersing step is preferably carried out at temperatures of for example 20 to 100, preferably 40 to 90 ° C.
- the sizing agent is preferably added in the form of a melt. It has not been proven to provide the nitrogen-containing polymer and to provide it with an anionic dispersant.
- apparatuses known to those skilled in the art are used, for example high-pressure homogenizers, colloid mills and ultrasonic dispersants. The resulting dispersion is cooled in each case.
- the paper sizing agent of the invention has a viscosity e.g. in the range of 20 to 1,000 mPas, preferably 100 to 500 mPas (measured with a Brookfield viscometer and a temperature of 22 ° C). Viscosity during 4 weeks of storage at 40 ° C preferably increases at most to less than twice the initial viscosity immediately after production.
- the pH is preferably in the range of 3 to 4.
- the dispersions according to the invention are used as engine size agents in the production of paper, board and cardboard.
- the production of paper, paperboard and cardboard is usually done by dewatering a slurry of cellulosic fibers.
- Suitable cellulosic fibers are all conventional types, for example cellulosic fibers from wood pulp and fibers obtained from annual plants in Be-tracht.
- Wood pulp includes, for example, groundwood, thermomechanical pulp (TMP), chemothermomechanical pulp (CTMP), pressure groundwood, semi-pulp, high yield pulp, and refiner mechanical pulp (RMP) as well as waste paper.
- pulps that can be used in bleached or unbleached form examples include sulphate, sulphite and soda pulps.
- unbleached pulps also referred to as unbleached kraft pulp, are used.
- the fibers mentioned can be used alone or in a mixture.
- the pH of the cellulose fiber slurry is, for example, 4 to 8, preferably 6 to 8.
- the dewatering of the stock can be carried out batchwise or continuously on a paper machine.
- the dewatering of the paper stock is preferably carried out additionally in the presence of a retention agent.
- a retention agent in addition to anionic retention aids or nonionic retention aids such as polyacrylamides, cationic polymers are preferably used as retention aids and as drainage aids. This achieves a significant improvement in the runnability of the paper machines.
- cationic retention agents one can use all commercially available products. These are, for example, cationic polyacrylamides, polydiallyldimethylammonium chlorides, high molecular weight polyvinylamines, high molecular weight polyvinylamines having K values of more than 150, polyethyleneimines, polyamines having a molecular weight of more than 50,000, modified polyamines grafted with ethyleneimine and optionally crosslinked, polyetheramides , Polyvinylimidazoles, polyvinylpyrrolidines, polyvinylimidazolines, polyvinyltetrahydropyrines, poly (dialkylaminoalkylvinylethers), poly (dialkylaminoalkyl (meth) acrylates) in protonated or quaternized form and polyamidoamines of a dicarboxylic acid such as adipic acid and polyalkylenepolyamines such as diethylenetriamine grafted with ethyleneimine and with polyethylene glycol dichlor
- the cationic polymers used as retention aids have, for example, Fikentscher K values of greater than 150 (determined in 5% aqueous common salt solution at a polymer concentration of 0.5% by weight, a temperature of 25 ° C. and a pH Value of 7). They are preferably used in amounts of 0.01 to 0.3 wt .-%, based on dry cellulose fibers.
- adjuvants known to those skilled in the literature may be added to the stock prior to sheet formation. These are, for example, fixing agents, solidifiers and defoamers.
- the present invention relates to the use of the paper sizing agent according to the invention as a sizing agent for the production of paper, cardboard and cardboard.
- the percentages in the examples are percent by weight.
- the K values were after H. Fikentscher, Cellulosic Chemistry, Vol. 13, 58-64 and 71-74 (1932 ) in 5% aqueous saline solution at a temperature of 25 ° C and a pH of 7 at a polymer concentration of 0.5 wt .-% determined.
- the average particle diameter of the dispersed particles of the polymer dispersions was determined both by Fraunhofer diffraction with a Coulter device of the type LS 230 with a small volume module and by electron microscopy. The viscosities were determined with a Brookfield viscometer at a temperature of 22 ° C.
- the ink buoyancy time (measured in minutes) is the time required for a test ink according to DIN 53 126 to 50% penetration through a test sheet.
- the water absorption is given in g / m 2 .
- the paper sheet is coated on both sides with an adhesive tape streak-free. Then strips are cut with the dimensions 25 x 75 mm. These test strips are immersed in a 30% hydrogen peroxide bath at 70 ° C or in a 3% lactic acid bath at 25 ° C. The edge penetration is determined by differential weighing of the dry test strips and the dip in the bath test strip.
- the mixture was homogenized by means of a high-pressure homogenizer at 100 bar and 75 ° C in two passes and cooled rapidly with ice.
- the dispersion obtained had a viscosity of 80 mPas (22 ° C.) and an average particle size of 1.3 ⁇ m. After 4 weeks of storage at 40 ° C, the dispersion had a viscosity of 120 mPas.
- Example 1 was repeated except that the solution of the naphthalenesulfonic acid-formaldehyde condensate sodium salt and then the polyvinylamine 1 was added first to the initially introduced cationic starch solution. The mixture was mixed with the melt of the alkyl ketene dimer.
- the dispersion obtained had a viscosity of 100 mPas (22 ° C.) and an average particle size of 1.5 ⁇ m. After 4 weeks of storage at 40 ° C, the dispersion had a viscosity of 180 mPas.
- Example 1 was repeated except that the solution of the cationic starch initially introduced was first the solution of the polyvinylamine 1 and then the naphthalenesulfonic acid-formaldehyde condensate sodium salt. The mixture was mixed with the melt of the alkyl ketene dimer.
- the dispersion obtained had a viscosity of 250 mPas (22 ° C.) and an average particle size of 2.5 ⁇ m. After 4 weeks storage at 40 ° C, the dispersion was coagulated and solid.
- Example 1 was repeated except that 22 parts by weight of an 18% strength by weight solution of polyvinylamine 2 was used instead of polyvinylamine 1.
- the dispersion obtained had a viscosity of 150 mPas (22 ° C.) and an average particle size of 1.4 ⁇ m. After 4 weeks of storage at 40 ° C, the dispersion had a viscosity of 300 mPas.
- Example 4 was repeated, but adding the solution of polyvinylamine 2 after homogenization and cooling.
- the dispersion obtained had a viscosity of 250 mPas (22 ° C.) and an average particle size of 2.8 ⁇ m. After 4 weeks of storage at 40 ° C, the dispersion was solid.
- the mixture was homogenized by means of a high-pressure homogenizer at 100 bar and 75 ° C in two passes and cooled rapidly with ice.
- the dispersion obtained had a viscosity of 50 mPas (22 ° C.) and an average particle size of 1.4 ⁇ m. After 4 weeks of storage at 40 ° C, the dispersion had a viscosity of 130 mPas.
- the mixture was homogenized by means of a high-pressure homogenizer at 100 bar and 75 ° C in two passes and cooled rapidly with ice.
- the dispersion obtained had a viscosity of 40 mPas (22 ° C.) and an average particle size of 0.9 ⁇ m. After 4 weeks storage at 40 ° C, the dispersion had a viscosity of 900 mPas.
- Comparative Examples 3 and 5 show that no stable dispersion is obtained when the nitrogen-containing polymer is charged (Comparative Example 3) or added after the dispersing step (Comparative Example 5).
- Comparative Examples 6 and 7 show the viscosity increase of dispersions which are not nitrogen-containing polymer (Comparative Example 6) or contain no cationic starch (Comparative Example 7) at 4 weeks storage at 40 ° C.
Abstract
Description
Die Erfindung betrifft ein Papierleimungsmittel, das eine stabile wässrige Dispersion eines Reaktivleimungsmittels umfasst, ein Verfahren zu seiner Herstellung und seine Verwendung zur Leimung von Papier, Pappe und Karton.The invention relates to a paper sizing agent comprising a stable aqueous dispersion of a reactive sizing agent, a process for its preparation and its use for sizing paper, board and cardboard.
Reaktivleimungsmittel wie Alkylketendimere werden in großem Umfang zur Masseleimung von Papier, Pappe und Karton verwendet. Die Reaktivleimungsmittel kommen meist als gebrauchsfertige Dispersionen in den Handel. Sie enthalten in der Regel kationische Polymere, wie kationische Stärke oder synthetische kationische Polymere, die den Reaktivleimungsmitteln Substantivität gegenüber Cellulose verleihen und/oder als Schutzkolloide wirken.Reactive sizing agents such as alkyl ketene dimers are widely used for sizing paper, board and board. Reactive sizing agents are usually sold as ready-to-use dispersions. They usually contain cationic polymers such as cationic starch or synthetic cationic polymers which impart substantivity to cellulose to the reactive sizing agents and / or act as protective colloids.
Damit die Leimungsmitteldispersionen gebrauchstauglich sind, müssen sie ausreichend viskositätsstabil sein, so dass sie bis zu ihrer Zugabe in die Papiermaschine pumpfähig und verdünnbar bleiben. Praktisch müssen die Dispersionen oft mehrere Wochen bei Temperaturen bis zu 40 °C dünnflüssig bleiben. Diese Anforderungen sind aufgrund der inhärenten Instabilität kolloidaler Systeme nur schwer zu erfüllen. Vielfach nimmt die Viskosität der Dispersionen stark zu, bis man sie nicht mehr pumpen kann, oder die Dispersionen koagulieren. Die Probleme sind umso ausgeprägter, je höher der Gehalt der Dispersionen an Reaktivleimungsmittel ist.In order for the sizing dispersions to be suitable for use, they must be sufficiently stable to viscosity so that they remain pumpable and dilutable until they are added to the paper machine. In practice, the dispersions often have to remain thin for several weeks at temperatures up to 40 ° C. These requirements are difficult to meet due to the inherent instability of colloidal systems. In many cases, the viscosity of the dispersions increases sharply until they can no longer be pumped or the dispersions coagulate. The higher the content of the reactive size dispersions, the more pronounced are the problems.
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Die ältere deutsche Patentanmeldung mit dem Aktenzeichen
Der Erfindung liegt die Aufgabe zugrunde, Papierleimungsmittel auf der Basis wässriger Dispersionen von Reaktivleimungsmitteln zur Verfügung zu stellen, die eine gute Leimungswirkung und ausreichende Viskositätsstabilität aufweisen.The object of the invention is to provide paper sizing agents based on aqueous dispersions of reactive sizing agents which have a good sizing effect and sufficient viscosity stability.
Die Aufgabe wird erfindungsgemäß gelöst durch ein Papierleimungsmittel, das umfasst:
- (a) eine stabile wässrige Dispersion eines Reaktivleimungsmittels,
- (b) 5 bis 100 Gew.-%, vorzugsweise 10 bis 100 Gew.-%, insbesondere 20 bis 50 Gew.-%, bezogen auf das Reaktivleimungsmittel, eines im Wesentlichen linearen stickstoffhaltigen Polymers mit wenigstens 5 mmol/g basischen Stickstoffatomen,
- (c) 1 bis 50 Gew.-%, vorzugsweise 3 bis 25 Gew.%, insbesondere 10 bis 20 Gew.-%, bezogen auf das Reaktivleimungsmittel, kationische Stärke mit einem Substitutionsgrad von wenigstens 0,05, vorzugsweise 0,05 bis 0,5, insbesondere 0,08 bis 0,3 und am meisten bevorzugt 0,1 bis 0,2.
- (a) a stable aqueous dispersion of a reactive sizing agent,
- (b) 5 to 100% by weight, preferably 10 to 100% by weight, in particular 20 to 50% by weight, based on the reactive sizing agent, of a substantially linear nitrogen-containing polymer having at least 5 mmol / g of basic nitrogen atoms,
- (C) 1 to 50 wt .-%, preferably 3 to 25 wt.%, In particular 10 to 20 wt .-%, based on the reactive sizing agent, cationic starch having a degree of substitution of at least 0.05, preferably 0.05 to 0 , 5, especially 0.08 to 0.3 and most preferably 0.1 to 0.2.
Üblicherweise enthalten die erfindungsgemäßen Papierleimungsmiftel 1 bis 50 Gew.-% Reaktivleimungsmittel, bezogen auf das Gesamtgewicht des Papierleimungsmittels.Usually, the paper size additives of the invention contain from 1 to 50% by weight of reactive sizing agent, based on the total weight of the paper sizing agent.
Der Begriff "stabile Dispersion" soll bedeuten, dass die Dispersion bei Lagerung über 4 Wochen bei 40 °C flüssig bleibt und nicht koaguliert.The term "stable dispersion" is intended to mean that the dispersion remains liquid when stored for 4 weeks at 40 ° C and does not coagulate.
Unter "linearem Polymer" wird ein Polymer verstanden, das im Wesentlichen frei ist von Verzweigungen und Vernetzungen. Polyalkylenimine, wie insbesondere Polyethylenimine, werden aufgrund ihrer über tertiäre Aminogruppen verzweigten Struktur nicht als "lineare Polymere" angesehen.By "linear polymer" is meant a polymer that is substantially free of branching and crosslinking. Polyalkyleneimines, such as in particular polyethylenimines, are not considered to be "linear polymers" due to their branched via tertiary amino groups structure.
Unter "basischen Stickstoffatomen" werden solche Stickstoffatome verstanden, die in wässriger Lösung durch eine Brönstedt-Säure protoniert werden können. Basische Stickstoffatome sind insbesondere primäre, sekundäre und tertiäre Aminogruppen, wovon primäre Aminogruppen bevorzugt sind. Die basischen Stickstoffatome in dem stickstoffhaltigen Polymer sind vorzugsweise zu wenigstens 90 mol-%, insbesondere im Wesentlichen quantitativ protoniert. Die Protonierung kann durch Umsetzung mit einer Mineralsäure, wie Salzsäure, Schwefelsäure oder Phosphorsäure, erfolgen, erfolgt aber vorzugsweise durch Umsetzung mit einer Carbonsäure. Geeignete Carbonsäuren sind vor allem Ameisensäure, Essigsäure, Propionsäure, Oxalsäure, Weinsäure, Citronensäure und dergleichen. Eine im Wesentlichen quantitative Protonierung wird erhalten, wenn das stickstoffhaltige Polymer mit der gewählten Säure auf einen pH von weniger als 5 eingestellt wird.By "basic nitrogen atoms" is meant those nitrogen atoms which can be protonated in aqueous solution by a Bronsted acid. Basic nitrogen atoms are in particular primary, secondary and tertiary amino groups, of which primary amino groups are preferred. The basic nitrogen atoms in the nitrogen-containing polymer are preferably at least 90 mol%, in particular substantially quantitatively protonated. The protonation can be carried out by reaction with a mineral acid, such as hydrochloric acid, sulfuric acid or phosphoric acid, but is preferably carried out by reaction with a carboxylic acid. Suitable carboxylic acids are, above all, formic acid, acetic acid, propionic acid, oxalic acid, tartaric acid, citric acid and the like. Substantially quantitative protonation is obtained when the nitrogen-containing polymer is adjusted to a pH of less than 5 with the chosen acid.
Das erfindungsgemäß verwendete stickstoffhaltige Polymer enthält wenigstens 3 mmol/g, vorzugsweise wenigstens 5 mmol/g basische Stickstoffatome, insbesondere 7,5 bis 23 mmol/g, und am meisten bevorzugt 12 bis 18 mmol/g. Der Gehalt p eines Polymers an basischen Stickstoffatomen lässt sich nach der folgenden Gleichung berechnen:
worin xN für den molaren Anteil eines Monomers mit basischem Stickstoffatom (wie Vinylamin), xO für den molaren Anteil eines Monomers ohne (basische) Stickstoffatome (wie Vinylformamid), MN für das Molekulargewicht des Monomers mit basischem Stickstoffatom und MO für das Molekulargewicht des Monomers ohne (basische) Stickstoffatome steht. Der Begriff "molarer Anteil" bezieht sich hierbei auf die Monomer-Zusammensetzung des Polymers.The nitrogen-containing polymer used in the invention contains at least 3 mmol / g, preferably at least 5 mmol / g basic nitrogen atoms, especially 7.5 to 23 mmol / g, and most preferably 12 to 18 mmol / g. The content p of a polymer of basic nitrogen atoms can be calculated according to the following equation:
wherein x is N for the molar ratio of a monomer having a basic nitrogen atom (such as vinylamine), x 0 for the molar fraction of a monomer having no (basic) nitrogen atoms (such as vinylformamide), M N for the molecular weight of the monomer having a basic nitrogen atom, and M 0 for the Molecular weight of the monomer without (basic) nitrogen atoms. The term "molar fraction" refers to the monomer composition of the polymer.
Das mittlere Molekulargewicht Mw des stickstoffhaltigen Polymers beträgt z.B. 500 bis 10 Millionen, vorzugsweise 750 bis 5 Millionen und besonders bevorzugt 1 000 bis 2 Millionen (bestimmt durch Lichtstreuung). Dieser Molmassenbereich entspricht beispielsweise K-Werten von 30 bis 150, vorzugsweise 60 bis 90 (bestimmt nach H. Fikentscher in 5 %iger wässriger Kochsalzlösung bei 25 °C, einen pH-Wert von 7 und einer Polymerkonzentration von 0,5 Gew.-%).The average molecular weight Mw of the nitrogen-containing polymer is e.g. 500 to 10 million, preferably 750 to 5 million and particularly preferably 1 000 to 2 million (determined by light scattering). This molar mass range corresponds, for example, to K values of 30 to 150, preferably 60 to 90 (determined according to H. Fikentscher in 5% strength aqueous sodium chloride solution at 25 ° C., a pH of 7 and a polymer concentration of 0.5% by weight. ).
Zu den geeigneten stickstoffhaltigen Polymeren zählen Hydrolyseprodukte von Homo-und Copolymeren von N-Vinylcarbonsäureamiden und/oder N-Vinylcarbonsäureimiden. Bei der Hydrolyse wird von einem Teil oder allen der einpolymerisierten N-Vinylcarbonsäureamid- oder N-Vinylcarbonsäureimid-Einheiten die Acylgruppe(n) durch Einwirkung von Säuren, Basen oder Enzymen unter Bildung von Vinylamineinheiten abgespalten.Suitable nitrogen-containing polymers include hydrolysis products of homopolymers and copolymers of N-vinylcarboxamides and / or N-vinylcarboximides. In the hydrolysis of a part or all of the copolymerized N-vinylcarboxamide or N-vinylcarboximide units, the acyl group (s) is cleaved off by the action of acids, bases or enzymes to form vinylamine units.
Als N-Vinylcarbonsäureamide kommen grundsätzlich offenkettige und cyclische N-Vinylcarbonsäureamide in Betracht. Bevorzugte N-Vinylcarbonsäureamide sind offenkettige N-Vinylcarbonsäureamide, insbesondere solche offenkettige N-Vinylcarbonsäureamide, deren Hydrolyse ein primäres Amin liefert. Beispiele für besonders geeignete N-Vinylcarbonsäureamide sind N-Vinylformamid, N-Vinyl-N-methylformamid, N-Vinylacetamid, N-Vinyl-N-methylacetamid, N-Vinyl-N-ethylacetamid und N-Vinylpropionamid, insbesondere N-Vinylformamid. Beispiele für geeignete N-Vinylimide sind N-Vinylsuccinimid und N-Vinylphthalimid. Die genannten Monomeren können entweder allein oder in Mischung untereinander oder zusammen mit anderen Monomeren polymerisiert werden.Suitable N-vinylcarboxamides are generally open-chain and cyclic N-vinylcarboxamides. Preferred N-vinylcarboxamides are open-chain N-vinylcarboxamides, in particular those open-chain N-vinylcarboxamides whose hydrolysis yields a primary amine. Examples of particularly suitable N-vinylcarboxamides are N-vinylformamide, N-vinyl-N-methylformamide, N-vinylacetamide, N-vinyl-N-methylacetamide, N-vinyl-N-ethylacetamide and N-vinylpropionamide, in particular N-vinylformamide. Examples of suitable N-vinylimides are N-vinylsuccinimide and N-vinylphthalimide. The monomers mentioned can be polymerized either alone or in mixture with one another or together with other monomers.
Vinylamineinheiten enthaltende Polymere sind z. B. aus der
Als monoethylenisch ungesättigte Monomere, die mit den N-Vinylcarbonsäureamiden copolymerisiert werden, kommen alle damit copolymerisierbaren Verbindungen in Betracht. Beispiele hierfür sind Vinylester von gesättigten Carbonsäuren von 1 bis 6 Kohlenstoffatomen wie Vinylformiat, Vinylacetat, Vinylpropionat und Vinylbutyrat und Vinylether wie C1- bis C6-Alkylvinylether, z.B. Methyl- oder Ethylvinylether. Weitere geeignete Comonomere sind Ester, Amide und Nitrile von ethylenisch ungesättigten C3- bis C6-Carbonsäuren, beispielsweise Methylacrylat, Methylmethacrylat, Ethylacrylat und Ethylmethacrylat, Acrylamid und Methacrylamid sowie Acrylnitril und Methacrylnitril.Suitable monoethylenically unsaturated monomers which are copolymerized with the N-vinylcarboxamides are all compounds which can be copolymerized therewith. Examples of these are vinyl esters of saturated carboxylic acids of 1 to 6 carbon atoms such as vinyl formate, vinyl acetate, vinyl propionate and vinyl butyrate and vinyl ethers such as C 1 - to C 6 -alkyl vinyl ethers, for example methyl or ethyl vinyl ether. Further suitable comonomers are esters, amides and nitriles of ethylenically unsaturated C 3 - to C 6 -carboxylic acids, for example methyl acrylate, methyl methacrylate, ethyl acrylate and ethyl methacrylate, acrylamide and methacrylamide and also acrylonitrile and methacrylonitrile.
Weitere geeignete Carbonsäureester leiten sich von Glykolen oder bzw. Polyalkylenglykolen ab, wobei jeweils nur eine OH-Gruppe verestert ist, z.B. Hydroxyethylacrylat, Hydroxyethylmethacrylat, Hydroxypropylacrylat, Hydroxybutylacrylat, Hydroxypropylmethacrylat, Hydroxybutylmethacrylat sowie Acrylsäuremonoester von Polyalkylenglykolen einer Molmasse von 500 bis 10 000.Further suitable carboxylic acid esters are derived from glycols or polyalkylene glycols, wherein in each case only one OH group is esterified, e.g. Hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate and acrylic acid monoesters of polyalkylene glycols having a molecular weight of 500 to 10,000.
Weitere geeignete Comonomere sind Amide ethylenisch ungesättigter Carbonsäuren wie Acrylamid, Methacrylamid sowie N-Alkylmono- und Diamide von monoethylenisch ungesättigten Carbonsäuren mit Alkylresten von 1 bis 6 C-Atomen, z.B. N-Methylacrylamid, N,N-Dimethylacrylamid, N-Methylmethacrylamid, N-Ethylacrylamid, N-Propylacrylamid und tert-Butylacrylamid.Further suitable comonomers are amides of ethylenically unsaturated carboxylic acids such as acrylamide, methacrylamide and N-alkyl mono- and diamides of monoethylenically unsaturated carboxylic acids having alkyl radicals of 1 to 6 carbon atoms, e.g. N-methylacrylamide, N, N-dimethylacrylamide, N-methylmethacrylamide, N-ethylacrylamide, N-propylacrylamide and tert-butylacrylamide.
Weiterhin sind als Comonomere geeignet N-Vinylpyrrolidon, N-Vinylcaprolactam, Acrylnitril, Methacrylnitril, N-Vinylimidazol sowie substituierte N-Vinylimidazole wie z.B. N-Vinyl-2-methylimidazol, N-Vinyl-4-methylimidazol, N-Vinyl-5-methylimidazol, N-Vinyl-2-ethylimidazol und N-Vinylimidazoline wie N-Vinylimidazolin, N-Vinyl-2-methylimidazolin und N-Vinyl-2-ethylimidazolin.Further suitable comonomers are N-vinylpyrrolidone, N-vinylcaprolactam, acrylonitrile, methacrylonitrile, N-vinylimidazole and substituted N-vinylimidazoles, e.g. N-vinyl-2-methylimidazole, N-vinyl-4-methylimidazole, N-vinyl-5-methylimidazole, N-vinyl-2-ethylimidazole and N-vinylimidazolines such as N-vinylimidazoline, N-vinyl-2-methylimidazoline and N- vinyl-2-ethylimidazoline.
Solche Copolymerisate enthalten vorzugsweise wenigstens 50 mol%, mindestens eines N-Vinylcarbonsäureamids in einpolymerisierter Form. Die Comonomeren sind vorzugsweise frei von Säuregruppen.Such copolymers preferably contain at least 50 mol% of at least one N-vinylcarboxamide in copolymerized form. The comonomers are preferably free of acid groups.
Um geeignete Polyvinylamine herzustellen, geht man vorzugsweise von N-Vinylformamid-Homopolymeren oder von N-Vinylformamid-Copolymeren, z.B. mit Vinylformiat, Vinylacetat, Vinylpropionat, Acrylnitril, N-Vinylcaprolactam, N-Vinylharnstoff, N-Vinylpyrrolidon oder C1- bis C6-Alkylvinylethern aus, deren N-Vinylformamideinheiten dann bis zu einem Hydrolysegrad von vorzugsweise 25 bis 100 mol-%, besonders bevorzugt 50 bis 100 mol-% und insbesondere bevorzugt 70 bis 100 mol-% zu N-Vinylamineinheiten hydrolysiert werden. Die Hydrolyse der oben beschriebenen Poly-merisate erfolgt nach bekannten Verfahren durch Einwirkung von Säuren, Basen oder Enzymen. Bei Verwendung von Säuren als Hydrolysemittel liegen die Vinylamineinheiten der Polymerisate als Ammoniumsalz vor, während bei der Hydrolyse mit Basen die freie Aminogruppen entstehen.To prepare suitable polyvinylamines, it is preferable to use N-vinylformamide homopolymers or N-vinylformamide copolymers, for example vinyl formate, vinyl acetate, vinyl propionate, acrylonitrile, N-vinylcaprolactam, N-vinylurea, N-vinylpyrrolidone or C 1 -C 6 Alkyl vinyl ethers whose N-vinylformamide units are then hydrolyzed to N-vinylamine units to a degree of hydrolysis of preferably 25 to 100 mol%, more preferably 50 to 100 mol% and most preferably 70 to 100 mol%. The hydrolysis of the above-described polymers is carried out by known methods by the action of acids, bases or enzymes. When acids are used as hydrolyzing agents, the vinylamine units of the polymers are present as the ammonium salt, while hydrolysis with bases gives rise to the free amino groups.
Die Vinylaminpolymere werden vorzugsweise in salzfreier Form eingesetzt. Salzfreie wässrige Lösungen können beispielsweise aus den oben beschriebenen salzhaltigen Polymerlösungen mit Hilfe einer Ultrafiltration an geeigneten Membranen bei Trenngrenzen von beispielsweise 1 000 bis 500 000 Dalton, vorzugsweise 10 000 bis 300 000 Dalton hergestellt werden.The vinylamine polymers are preferably used in salt-free form. Salt-free aqueous solutions can be prepared, for example, from the salt-containing polymer solutions described above by means of ultrafiltration on suitable membranes at separation limits of, for example, 1,000 to 500,000 daltons, preferably 10,000 to 300,000 daltons.
Bevorzugt in Betracht kommende Vinylaminpolymere sind Vinylamin-Homopolymere mit einem Hydrolysegrad von 25 bis 100 mol%, sowie zu 25 bis 100 mol% hydrolysierte Copolymerisate aus Vinylformamid und Vinylacetat, Vinylalkohol, Vinylpyrrolidon oder Acrylamid jeweils mit K-Werten von 30 bis 150, insbesondere 60 bis 90.Preferred vinylamine polymers are vinylamine homopolymers having a degree of hydrolysis of from 25 to 100 mol%, and from 25 to 100 mol% hydrolyzed copolymers of vinylformamide and vinyl acetate, vinyl alcohol, vinylpyrrolidone or acrylamide, in each case having K values of from 30 to 150, in particular 60 until 90.
Alternativ kann man als stickstoffhaltiges Polymer Polymere verwenden, die einpolymerisierte Einheiten von Monomeren mit basische Stickstoffatome umfassenden Seitengruppen enthalten oder deren Copolymere mit Monomeren ohne (basische) Stickstoffatome in einem geeigneten Verhältnis.Alternatively, as the nitrogen-containing polymer, one may use polymers containing polymerized units of monomers having side groups comprising basic nitrogen atoms, or their copolymers with monomers having no (basic) nitrogen atoms in an appropriate ratio.
Geeignete Monomere mit basische Stickstoffatome umfassenden Seitengruppen sind z.B. Allylamin, basische Acrylate, wie z.B. Dimethylaminoethylacrylat, Dimethylaminoethylmethacrylat, Diethylaminoethylacrylat, Diethylaminoethylmethacrylat, Dimethylaminopropylacrylat, Dimethylaminopropylmethacrylat, Diethylaminopropylacrylat, Dimethylaminobutylacrylat und Diethylaminobutylacrylat; basische (Meth)acrylamide, wie z.B. Dimethylaminoethylacrylamid, Dimethylaminoethylmethacrylamid, Diethylaminoethylacrylamid, Diethylaminoethylmethacrylamid, Dimethylaminopropylacrylamid, Diethylaminopropylacrylamid, Dimethylaminopropylmethacrylamid und Diethylaminopropylmethacrylamid.Suitable monomers having side groups comprising basic nitrogen atoms are e.g. Allylamine, basic acrylates, e.g. Dimethylaminoethyl acrylate, dimethylaminoethyl methacrylate, diethylaminoethyl acrylate, diethylaminoethyl methacrylate, dimethylaminopropyl acrylate, dimethylaminopropyl methacrylate, diethylaminopropyl acrylate, dimethylaminobutyl acrylate and diethylaminobutyl acrylate; basic (meth) acrylamides, e.g. Dimethylaminoethylacrylamide, dimethylaminoethylmethacrylamide, diethylaminoethylacrylamide, diethylaminoethylmethacrylamide, dimethylaminopropylacrylamide, diethylaminopropylacrylamide, dimethylaminopropylmethacrylamide and diethylaminopropylmethacrylamide.
Geeignete Monomere ohne (basische) Stickstoffatome sind die oben genannten.Suitable monomers without (basic) nitrogen atoms are those mentioned above.
Die Begriffe "kationische Stärke" und "kationisch modifizierte Stärke" werden vorliegend synonym verwendet. Geeignete kationische Stärken sind im Handel erhältlich. Bei der Ausgangsstärke kann es sich um eine beliebige Stärkesorte handeln, wie z. B. Kartoffelstärke, Maisstärke, Weizenstärke, Wachsmaisstärke und Tapiokastärke. Stärken mit einem Amylopektingehalt von mehr als 50 Gew.-%, vorzugsweise 80 bis 100 Gew.-% sind dabei bevorzugt, wobei solche mit einem Amylopektingehalt von wenigstens 90 Gew.-% besonders bevorzugt sind.The terms "cationic starch" and "cationically modified starch" are used interchangeably herein. Suitable cationic starches are commercially available. The starting starch can be any type of starch, such as. Potato starch, corn starch, wheat starch, waxy maize starch and tapioca starch. Starches having an amylopectin content of more than 50% by weight, preferably 80 to 100% by weight, are preferred, with those having an amylopectin content of at least 90% by weight being particularly preferred.
An einen Teil der freien Hydroxylgruppen der Stärke werden mit Hilfe einer chemischen Reaktion protonierbare oder kationisch geladene Gruppen gekoppelt, wie insbesondere Dialkylamino- oder Trialkylammoniumgruppen. Als Kationisierungsmittel eignen sich vor allem Dialkylaminoalkylepoxide und Dialkylaminoalkylhalogenide. Anstelle der Alkylgruppen können die Kationisierungsmittel auch Arylgruppen enthalten.Part of the free hydroxyl groups of the starch are coupled by means of a chemical reaction to protonatable or cationically charged groups, in particular dialkylamino or trialkylammonium groups. Particularly suitable cationizing agents are dialkylaminoalkyl epoxides and dialkylaminoalkyl halides. Instead of the alkyl groups, the cationizing agents may also contain aryl groups.
Bevorzugte Kationisierungsmittel sind beispielsweise N,N-Dimethylaminoethylchlorid, N,N-Diethylaminoethylchlorid, N,N-Dimethylaminopropylchlorid, 3-Dibutylamino-1,2-epoxypropan, 2-Brom-5-diethylaminopentan-hydrobromid, N-(2,3-Epoxypropyl)-piperidin, 2,3-Epoxypropyltrimethylammoniumchlorid und N,N-(2,3-Epoxypropyl)-methylanilin. Anstelle der freien Amine können auch salzsaure oder andere Salze benutzt werden.Preferred cationizing agents are, for example, N, N-dimethylaminoethyl chloride, N, N-diethylaminoethyl chloride, N, N-dimethylaminopropyl chloride, 3-dibutylamino-1,2-epoxypropane, 2-bromo-5-diethylaminopentane hydrobromide, N- (2,3-epoxypropyl ) -piperidine, 2,3-epoxypropyltrimethylammonium chloride and N, N- (2,3-epoxypropyl) -methylaniline. Instead of the free amines, hydrochloric acid or other salts can also be used.
Die Reaktion zwischen Ausgangsstärke und Kationisierungsreagenz wird vorzugsweise im alkalischen Medium durchgeführt. Der anzuwendende Anteil an Reagenz hängt vom gewünschten Substitutionsgrad ab. Der Substituionsgrad ist das Verhältnis von kationischer Gruppe zu Kohlehydrat-Einheit (d.h. Glucose-Einheit). Er kann einen Maximalwert von 3 annehmen.The reaction between the starting starch and the cationizing reagent is preferably carried out in an alkaline medium. The proportion of reagent to be used depends on the desired degree of substitution. The degree of substitution is the ratio of cationic group to carbohydrate unit (i.e., glucose unit). He can assume a maximum value of 3.
Geeignete Reaktivleimungsmittel für die erfindungsgemäßen Papierleimungsmittel sind beispielsweise C12- bis C22-Alkylketendimere, C5- bis C22-Alkyl- oder C5- bis C22-Alkenylbernsteinsäureanhydride, C12- bis C36-Alkylisocyanate und/oder organische Isocyanate wie Dodecylisocyanat, Octadecylisocyanat, Tetradecylisocyanat, Hexadecylisocyanat, Eicosylisocyanat und Decylisocyanat. Bevorzugt eingesetzte Masseleimungsmittel sind Alkylketendimere und langkettige Alkyl- bzw. Alkenylbernsteinsäureanhydride.Suitable reactive sizing agents for the paper sizing agents according to the invention are, for example, C 12 - to C 22 -alkyl ketene dimers, C 5 - to C 22 -alkyl or C 5 - to C 22 -alkenylsuccinic anhydrides, C 12 - to C 36 -alkyl isocyanates and / or organic isocyanates, such as Dodecyl isocyanate, octadecyl isocyanate, tetradecyl isocyanate, hexadecyl isocyanate, eicosyl isocyanate and decyl isocyanate. Preferably used engine sizing agents are alkyl ketene dimers and long-chain alkyl or alkenylsuccinic anhydrides.
Beispiele für Alkylketendimere sind Tetradecyldiketen, Stearydiketen, Lauryldiketen, Palmityldiketen, Oleyldiketen, Behenyldiketen oder deren Gemische. Außerdem eignen sich Alkyldiketene mit unterschiedlichen Alkylgruppen wie Stearylpalmityldiketen, Behenylstearyldiketen, Behenyloleyldiketen oder Palmitylbehenyldiketen. Vorzugsweise verwendet man Stearyldiketen, Palmityldiketen, Behenyldiketen oder Mischungen aus Behenyldiketen und Stearyldiketen. Als Reaktivleimungsmittel geeignete substituierte Bernsteinsäureanhydride sind beispielsweise Decenylbernsteinsäureanhydrid, n-Octadecenylbemsteinsäureanhydrid, Dodecenylbernsteinsäureanhydrid und n-Hexadecenylbernsteinsäureanhydrid.Examples of alkylketene dimers are tetradecyldiketene, stearydikethene, lauryldiketen, palmityldiketen, oleyldiketen, Behenyldiketen or mixtures thereof. Also suitable are alkyldiketenes having different alkyl groups, such as stearyl palmitate diketene, behenylstearyl diketene, behenylenyldiketene or palmitylbehenyldiketene. Stearyldiketen, Palmityldiketen, Behenyldiketen or mixtures of Behenyldiketen and Stearyldiketen are preferably used. Suitable reactive sizing agents substituted succinic anhydrides are, for example, decenylsuccinic anhydride, n-Octadecenylbemsteinsäureanhydrid, dodecenylsuccinic anhydride and n-Hexadecenylbernsteinsäureanhydrid.
Üblicherweise haben die erfindungsgemäßen wässrigen Dispersionen einen Gehalt an Reaktivleimungsmitteln von 1 bis 50 Gew.-%, bezogen auf das Gesamtgewicht der Dispersion. Beispielsweise haben die Dispersionen einen Gehalt von 1 bis 50 Gew.-%, bevorzugt 5 bis 35 Gew.%, bezogen auf das Gesamtgewicht der Dispersion, an C12-bis C22-Alkyldiketenen. Bei Verwendung von C5- bis C22-Alkyl- oder C5- bis C22-Alkenyl-bemsteinsäureanhydriden beträgt deren Gehalt beispielsweise 1 bis 25 Gew.-%, bevorzugt 2 bis 10 Gew.-%, bezogen auf das Gesamtgewicht der Dispersion.The aqueous dispersions according to the invention usually have a content of reactive sizes of from 1 to 50% by weight, based on the total weight of the dispersion. For example, the dispersions have a content of 1 to 50 wt .-%, preferably 5 to 35 wt.%, Based on the total weight of the dispersion, of C 12 to C 22 alkyldiketenes. When using C 5 - to C 22 -alkyl or C 5 - to C 22 -alkenyl-succinic anhydrides their content is, for example, 1 to 25 wt .-%, preferably 2 to 10 wt .-%, based on the total weight of the dispersion.
Um die dispergierten Reaktivleimungsmittel in der wässrigen Phase zu stabilisieren, enthalten die erfindungsgemäßen Papierleimungsmittel in der Regel ein anionisches Dispergiermittel. Der Gehalt an anionischen Dispergiermitteln in der wässrigen Dispersion beträgt beispielsweise 0,01 bis 5 Gew.-%, bevorzugt 0,01 bis 2,5 Gew.-% und ganz besonders bevorzugt 0,1 bis 1 Gew.-%, bezogen auf das Reaktivleimungsmittel.In order to stabilize the dispersed reactive sizing agents in the aqueous phase, the sizing agents of the present invention typically contain an anionic dispersant. The content of anionic dispersants in the aqueous dispersion is for example 0.01 to 5 wt .-%, preferably 0.01 to 2.5 wt .-% and most preferably 0.1 to 1 wt .-%, based on the reactive.
Bevorzugte anionische Dispergiermittel sind ausgewählt unter Kondensationsprodukten aus
- (a) Naphthalinsulfonsäure und Formaldehyd
- (b) Phenol, Phenolsulfonsäure und Formaldehyd,
- (c) Naphthalinsulfonsäure, Formaldehyd und Harnstoff sowie
- (d) Phenol, Phenolsulfonsäure, Formaldehyd und Harnstoff.
- (a) naphthalenesulfonic acid and formaldehyde
- (b) phenol, phenolsulfonic acid and formaldehyde,
- (c) naphthalenesulfonic acid, formaldehyde and urea, as well
- (d) phenol, phenolsulfonic acid, formaldehyde and urea.
Die anionischen Dispergiermittel können sowohl in Form der freien Säuren, der Alkalimetall-, Erdalkalimetall- und/oder der Ammoniumsalze vorliegen. Die Ammoniumsalze können sich sowohl von Ammoniak als auch von primären, sekundären und tertiären Aminen ableiten, z.B. eignen sich die Ammoniumsalze von Dimethylamin, Trimethylamin, Hexylamin, Cyclohexylamin, Dicyclohexylamin, Ethanolamin, Diethanolamin und Triethanolamin. Die oben beschriebenen Kondensationsprodukte sind bekannt und im Handel erhältlich. Sie werden durch Kondensieren der genannten Bestandteile hergestellt, wobei man anstelle der freien Säuren auch die entsprechenden Alkalimetall-, Erdalkalimetall- oder Ammoniumsalze einsetzen kann. Als Katalysator bei der Kondensation eignen sich beispielsweise Säuren wie Schwefelsäure, p-Toluolsulfonsäure und Phosphorsäure. Naphthalinsulfonsäure oder deren Alkalimetallsalze werden mit Formaldehyd vorzugsweise im Molverhältnis 1 : 0,1 bis 1 : 2 und meistens im Molverhältnis 1 : 0,5 bis 1 : 1 kondensiert. Das Molverhältnis für die Herstellung von Kondensaten aus Phenol, Phenolsulfonsäure und Formaldehyd liegt ebenfalls in dem oben angegebenen Bereich, wobei man beliebige Mischungen von Phenol und Phenolsulfonsäure anstelle von Naphthalinsulfonsäure bei der Kondensation mit Formaldehyd einsetzt. Anstelle von Phenolsulfonsäure kann man auch die Alkalimetall- und Ammoniumsalze der Phenolsulfonsäure verwenden. Die Kondensation der oben angegebenen Ausgangsstoffe kann gegebenenfalls zusätzlich in Gegenwart von Harnstoff durchgeführt werden. Beispielsweise verwendet man, bezogen auf Naphthalinsulfonsäure oder auf die Mischung von Phenol und Phenolsulfonsäure 0,1 bis 5 mol Harnstoff pro mol Naphthalinsulfonsäure beziehungsweise pro mol der Mischung aus Phenol und Phenolsulfonsäure.The anionic dispersants may be in the form of the free acids, the alkali metal, alkaline earth metal and / or ammonium salts. The ammonium salts can be derived from both ammonia and from primary, secondary and tertiary amines, for example, the ammonium salts of dimethylamine, trimethylamine, hexylamine, cyclohexylamine, dicyclohexylamine, ethanolamine, diethanolamine and triethanolamine are. The condensation products described above are known and commercially available. They are prepared by condensing said components, it being possible to use the corresponding alkali metal, alkaline earth metal or ammonium salts instead of the free acids. Suitable catalysts in the condensation are, for example, acids such as sulfuric acid, p-toluenesulfonic acid and phosphoric acid. Naphthalenesulfonic acid or its alkali metal salts are condensed with formaldehyde preferably in a molar ratio of 1: 0.1 to 1: 2 and usually in a molar ratio of 1: 0.5 to 1: 1. The molar ratio for the production of condensates of phenol, phenolsulfonic acid and formaldehyde is also in the range given above, using any mixtures of phenol and phenolsulfonic acid instead of naphthalenesulfonic acid in the condensation with formaldehyde. Instead of phenolsulfonic acid, it is also possible to use the alkali metal and ammonium salts of phenolsulfonic acid. The condensation of the abovementioned starting materials may optionally be carried out additionally in the presence of urea. For example, based on naphthalenesulfonic acid or on the mixture of phenol and phenolsulfonic acid, 0.1 to 5 moles of urea are used per mole of naphthalenesulfonic acid or per mole of the mixture of phenol and phenolsulfonic acid.
Die Kondensationsprodukte haben beispielsweise Molmassen in dem Bereich von 800 bis 100 000, vorzugsweise 1 000 bis 30 000 und insbesondere von 4 000 bis 25 000. Vorzugsweise setzt man als anionische Dispergiermittel Salze ein, die man beispielsweise durch Neutralisieren der Kondensationsprodukte mit Lithiumhydroxid, Natriumhydroxid, Kaliumhydroxid oder Ammoniak erhält. Der pH-Wert der Salze liegt beispielsweise in dem Bereich von 7 bis 10.The condensation products have, for example, molar masses in the range from 800 to 100,000, preferably 1,000 to 30,000 and in particular from 4,000 to 25,000. Preferably used as anionic dispersants are salts which are obtained, for example, by neutralizing the condensation products with lithium hydroxide, sodium hydroxide, Potassium hydroxide or ammonia receives. The pH of the salts is, for example, in the range of 7 to 10.
Weiterhin kommen als anionische Dispergiermittel Ligninsulfonsäure und deren Alkalimetall-, Erdalkalimetall- oder Ammoniumsalze in Betracht.Further suitable anionic dispersants are lignosulfonic acid and its alkali metal, alkaline earth metal or ammonium salts.
Als anionische Dispergiermittel eignen sich außerdem amphiphile Copolymerisate aus
- (i) hydrophoben monoethylenisch ungesättigten Monomeren und
- (ii) hydrophilen Monomeren mit einer anionischen Gruppe wie monoethylenisch ungesättigten Carbonsäuren, monoethylenisch ungesättigten Sulfonsäuren, monoethylenisch ungesättigten Phosphonsäuren oder deren Mischungen.
- (i) hydrophobic monoethylenically unsaturated monomers and
- (Ii) hydrophilic monomers having an anionic group such as monoethylenically unsaturated carboxylic acids, monoethylenically unsaturated sulfonic acids, monoethylenically unsaturated phosphonic acids or mixtures thereof.
Geeignete hydrophobe monoethylenisch ungesättigte Monomere
- (a) sind beispielsweise Olefine mit 2 bis 150 C-Atomen, Styrol, α-Methylstyrol, Ethylstyrol, 4-Methylstyrol, Acrylnitril, Methacrylnitril, Ester aus monoethylenisch ungesättigten C3- bis C5-Carbonsäuren und einwertigen Alkoholen, Amide der Acrylsäure oder Methacrylsäure mit C1- bis C24-Alkylaminen, Vinylester von gesättigten Monocarbonsäuren mit 2 bis 24 C-Atomen, Diester der Maleinsäure oder Fumarsäure mit einwertigen C1- bis C24-Alkoholen, Vinylether von Alkoholen mit 3 bis 24 C-Atomen oder Mischungen der genannten Verbindungen.
- (a) are, for example, olefins having 2 to 150 carbon atoms, styrene, α-methylstyrene, ethylstyrene, 4-methylstyrene, acrylonitrile, methacrylonitrile, esters of monoethylenically unsaturated C 3 - to C 5 -carboxylic acids and monohydric alcohols, amides of acrylic acid or Methacrylic acid with C 1 - to C 24 -alkylamines, vinyl esters of saturated monocarboxylic acids having 2 to 24 carbon atoms, diesters of maleic acid or fumaric acid with monohydric C 1 - to C 24 -alcohols, vinyl ethers of alcohols having 3 to 24 carbon atoms or Mixtures of the compounds mentioned.
Die amphiphilen Copolymerisate enthalten als hydrophile Monomere (b) z.B. C3- bis C10- monoethylenisch ungesättigte Carbonsäuren oder deren Anhydride, 2-Acrylamido-2-methylpropansulfonsäure, Vinylsulfonsäure, Styrolsulfonsäure, Vinylphosphonsäure, Salze der genannten Monomeren oder deren Mischungen als hydrophile Monomere mit einer anionischen Gruppe einpolymerisiert.The amphiphilic copolymers contain as hydrophilic monomers (b), for example, C 3 - to C 10 - monoethylenically unsaturated carboxylic acids or their anhydrides, 2-acrylamido-2-methylpropanesulfonic acid, vinylsulfonic acid, styrenesulfonic acid, vinylphosphonic acid, salts of said monomers or mixtures thereof as hydrophilic monomers polymerized in an anionic group.
Besonders bevorzugt sind wässrige Leimungsmittel-Dispersionen, die als anionisches Dispergiermittel amphiphile Copolymerisate aus
- (a) α-Olefinen mit 4 bis 12 C-Atomen, Styrol oder deren Mischungen als hydrophobe Monomere und
- (b) Maleinsäure, Acrylsäure, Methacrylsäure, Halbester aus Maleinsäure und Alkoholen mit 1 bis 25 C-Atomen oder Alkoxylierungsprodukten solcher Alkohole, Halbamide der Maleinsäure, Salze der genannten Monomeren oder Mischungen dieser Verbindungen als hydrophile Monomere mit einer anionischen Gruppe
- (a) α-olefins having 4 to 12 C atoms, styrene or mixtures thereof as hydrophobic monomers and
- (B) maleic acid, acrylic acid, methacrylic acid, half esters of maleic acid and alcohols having 1 to 25 carbon atoms or alkoxylation of such alcohols, hemiamides of maleic acid, salts of said monomers or mixtures of these compounds as hydrophilic monomers having an anionic group
Bevorzugt werden als anionische Dispergiermittel Copolymerisate aus Maleinsäureanhydrid mit C4- bis C12-Olefinen, besonders bevorzugt C8-Olefine wie Octen-1 und Düsobuten. Ganz besonders bevorzugt ist Düsobuten. Das molare Verhältnis zwischen Maleinsäureanhydrid und Olefin liegt z.B. im Bereich 0,9 : 1 bis 3 : 1, bevorzugt von 0,95 : 1 bis 1,5 : 1. Diese Copolymerisate werden bevorzugt in hydrolysierter Form als wässrige Lösung oder Dispersionen eingesetzt, wobei die Anhydridgruppe geöffnet vorliegt und die Carboxylgruppen vorzugsweise zum Teil oder ganz neutralisiert sind. Zur Neutralisation werden folgende Basen eingesetzt: Alkalimetallbasen, wie Natriumhydroxid, Kaliumhydroxid, Natriumcarbonat, Kaliumcarbonat, Erdalkalisalze wie Calciumhydroxid, Calciumcarbonat, Magnesiumhydroxid, Ammoniak, primäre, sekundäre oder tertiäre Amine wie Triethylamin, Triethanolamin, Diethanolamin, Ethanolamin, Morpholin etc.Preferred anionic dispersants are copolymers of maleic anhydride with C 4 - to C 12 -olefins, more preferably C 8 -olefins, such as octene-1 and düsobutene. Very particular preference is Düsobuten. The molar ratio between maleic anhydride and olefin is for example in the range 0.9: 1 to 3: 1, preferably from 0.95: 1 to 1.5: 1. These copolymers are preferably used in hydrolyzed form as aqueous solution or dispersions, wherein the anhydride group is present open and the carboxyl groups are preferably partially or completely neutralized. The following bases are used for neutralization: alkali metal bases, such as sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, alkaline earth salts, such as calcium hydroxide, calcium carbonate, magnesium hydroxide, ammonia, primary, secondary or tertiary amines, such as triethylamine, triethanolamine, diethanolamine, ethanolamine, morpholine etc.
Sofern die amphiphilen Copolymerisate in Form der freien Säure nicht ausreichend wassertöslich sind, werden sie in Form von wasserlöslichen Salzen eingesetzt, z.B. verwendet man die entsprechenden Alkalimetall-, Erdalkalimetall- und Ammoniumsalze. Die Molmasse Mw der amphiphilen Copolymerisate beträgt beispielsweise 800 bis 250 000, meistens 1 000 bis 100 000 und liegt vorzugsweise in dem Bereich von 3 000 bis 20 000, insbesondere von 1 500 bis 10 000. Die Säurezahlen der amphiphilen Copolymerisate betragen beispielsweise 50 bis 500, vorzugsweise 150 bis 300 mg KOH/g Polymer.If the amphiphilic free acid-free copolymers are not sufficiently water-soluble, they are used in the form of water-soluble salts, e.g. the corresponding alkali metal, alkaline earth metal and ammonium salts are used. The molecular weight Mw of the amphiphilic copolymers is, for example, 800 to 250,000, usually 1,000 to 100,000 and is preferably in the range from 3,000 to 20,000, in particular from 1,500 to 10,000. The acid numbers of the amphiphilic copolymers are, for example, 50 to 500 , preferably 150 to 300 mg KOH / g polymer.
Die erfindungsgemäßen wässrigen Dispersionen können weitere Komponenten enthalten, wie beispielsweise nicht Cellulose-reaktive hydrophobe Substanzen, die zur Verbesserung der Stabilität beitragen und zum Beispiel in EP-A-437 764 und EP-A-658 228 beschrieben sind. Als nicht Cellulose-reaktive Substanzen kommen beispielsweise Fettsäuren, -amide und ester sowie Wachse in Betracht. Beispiele dafür ohne Anspruch auf Vollständigkeit sind Stearinsäurebehenylester, Myristinsäurestearylester, Stearinsäureisododecylester, Kohlensäuredioleylester, Kohlensäureoleylstearylester, Oleyl-N,N-distearylurethan, Parrafin, Di-Ölsäureglycerinester, Tris-Ölsäureglycerinester und Tris-Stearinsäureglycerinester.The aqueous dispersions according to the invention may contain further components, such as, for example, non-cellulose-reactive hydrophobic substances which contribute to improving the stability and are described, for example, in EP-A-437 764 and EP-A-658 228. Suitable non-cellulose-reactive substances are, for example, fatty acids, amides and esters as well as waxes. Examples thereof, but not exhaustive, are stearyl behenyl ester, myristate stearyl, stearic isododecyl ester, dioleyl carbonate, oleic acid stearyl ester, oleyl N, N-distearyl urethane, parrafin, di-oleic acid glycerol ester, tris-oleic acid glycerol ester and tris-stearic acid glycerol ester.
Weiterhin können zusätzlich in den erfindungsgemäßen Dispersionen feinteilige, wässrige Polymerdispersionen , die ein Leimungsmittel für Papier sind, enthalten sein. Solche Polymerdispersionen sind beispielsweise aus der
- (a) Styrol, Acrylnitril und/oder Methacrylnitril,
- (b) Acrylsäure- und/oder Methacrylsäureester von C1- bis C18-Alkoholen und/oder Vinylester von gesättigtem C2- bis C4-Carbonsäuren und gegebenenfalls
- (c) anderen monoethylenisch ungesättigten copolymerisierbaren Monomeren
- (a) styrene, acrylonitrile and / or methacrylonitrile,
- (B) acrylic acid and / or methacrylic acid esters of C 1 - to C 18 -alcohols and / or vinyl esters of saturated C 2 - to C 4 -carboxylic acids and optionally
- (c) other monoethylenically unsaturated copolymerizable monomers
Als Monomere der Gruppe (a) kommen Styrol, Acrylnitril, Methacrylnitril oder Mischungen aus Styrol und Acrylnitril oder aus Styrol und Methacrylnitril in Betracht. Als Monomere der Gruppe (b) verwendet man Acrylsäure- und/oder Methacrylsäureester von C1- bis C18-Alkoholen und/oder Vinylester von gesättigten C2- bis C4-Carbonsäuren. Vorzugsweise verwendet man als Monomer der Gruppe (b) Acrylsäurebutylester und Methacrylsäurebutylester, z.B. Acrylsäureisobutylacrylat, Acrylsäure-n-butylacrylat und Methacrylsäureisobutylacrylat. Monomere der Gruppe (c) sind beispielsweise Butadien, Isopren, C3- bis C5-monoethylenisch ungesättigte Carbonsäuren, Acrylamidomethylpropansulfonsäure, Natriumvinylsulfonat, Vinylimidazol, N-Vinylformamid, Acrylamid, Methacrylamid, N-Vinylimidazolin und kationische Polymere wie Dimethylaminopropylmethacrylamid oder Dimethylaminoethylacrylat-Methochlorid. Pro 1 Gew.-Teil des Copolymerisates verwendet man 1 bis 32 Gew.-Teile einer Monomermischung aus den Komponenten (a) bis (c). Die Monomeren der Komponenten (a) und (b) können dabei in einem beliebigen Verhältnis copolymerisiert werden, z.B. im Molverhältnis 0,1 : 1 bis 1 : 0,1. Die Monomeren der Gruppe (c) werden im Bedarfsfalls zur Modifizierung der Eigenschaften der Copolymerisate verwendet. Details zur Herstellung dieser zusätzlichen Polymerdispersionen finden sich in der
Falls diese Polymerdispersionen in den erfindungsgemäßen wässrigen Dispersionen von Reaktivleimungsmitteln eingesetzt werden, sind solche bevorzugt, die kationische Polymere wie Dimethylaminopropylmethacrylamid und/oder Dimethylaminoethylacrylat in Kombination mit Styrol, Acrylnitril, Butadien und/oder Acrylsäureester enthalten.If these polymer dispersions are used in the aqueous dispersions of reactive sizes according to the invention, preference is given to those which contain cationic polymers such as dimethylaminopropylmethacrylamide and / or dimethylaminoethyl acrylate in combination with styrene, acrylonitrile, butadiene and / or acrylic acid esters.
Bei Einsatz solcher Polymerdispersionen beträgt deren Gehalt in der Regel 25 bis 300 Gew.-%, bevorzugt 50 bis 250 Gew.-% und besonders bevorzugt 75 bis 200 Gew.-% bezogen auf das Reaktivleimungsmittel.When such polymer dispersions are used, their content is generally 25 to 300% by weight, preferably 50 to 250% by weight and more preferably 75 to 200% by weight, based on the reactive sizing agent.
Weiterhin ist Gegenstand der Erfindung ein Verfahren zur Herstellung der erfindungsgemäßen wässrigen Dispersionen von Reaktivleimungsmitteln.The invention further provides a process for the preparation of the aqueous dispersions of reactive sizes according to the invention.
Zur Herstellung von Leimungsmittel-Dispersionen werden die Reaktivleimungsmittel üblicherweise auf eine Temperatur oberhalb ihres Schmelzpunkts erhitzt und in geschmolzener Form in Wasser unter Einwirkung von Scherkräften emulgiert. Das flüssige Alkenylbernsteinsäureanhydrid kann bereits bei Raumtemperatur emulgiert werden. Durch Zugabe lipophiler Substanzen wie Fettsäuren, Wachse, Harzsäuren und Harze, Fettsäureamide oder -ester, kann der Schmelzpunkt des Reaktivleimungsmittels gegebenenfalls herabgesetzt werden, wodurch die Stabilität der erhaltenen Dispersion verbessert wird.For the preparation of sizing dispersions, the reactive sizing agents are usually heated to a temperature above their melting point and emulsified in molten form in water under the action of shear forces. The liquid alkenyl succinic anhydride can be emulsified already at room temperature. By adding lipophilic substances such as fatty acids, waxes, resin acids and resins, fatty acid amides or esters, the melting point of the reactive sizing agent may optionally be lowered, thereby improving the stability of the resulting dispersion.
Dabei kann man beispielsweise eine wässrige Lösung der kationischen Stärke und des anionischen Dispergiermittels vorlegen, dann das Leimungsmittel und das stickstoffhaltige Polymer in beliebiger Reihenfolge zugeben und das erhaltene Gemisch einem Dispergierschritt unterziehen. Der Dispergierschritt erfolgt vorzugsweise bei Temperaturen von beispielsweise 20 bis 100, vorzugsweise 40 bis 90 °C. Das Leimungsmittel wird dabei vorzugsweise in Form einer Schmelze zugegeben. Es hat sich nicht bewährt, das stickstoffhaltige Polymer vorzulegen und mit einem anionischen Dispergiermittel zu versetzen. Beim Dispergierschritt verwendet man dem Fachmann bekannte Apparate, wie beispielsweise Hochdruckhomogenisatoren, Kolloidmühlen und Ultraschall-Dispergatoren. Die entstehende Dispersion wird jeweils gekühlt.In this case, it is possible, for example, to submit an aqueous solution of the cationic starch and of the anionic dispersant, then to add the sizing agent and the nitrogen-containing polymer in any desired sequence and to subject the resulting mixture to a dispersing step. The dispersing step is preferably carried out at temperatures of for example 20 to 100, preferably 40 to 90 ° C. The sizing agent is preferably added in the form of a melt. It has not been proven to provide the nitrogen-containing polymer and to provide it with an anionic dispersant. In the dispersing step, apparatuses known to those skilled in the art are used, for example high-pressure homogenizers, colloid mills and ultrasonic dispersants. The resulting dispersion is cooled in each case.
Das erfindungsgemäße Papierleimungsmittel hat eine Viskosität z.B. im Bereich von 20 bis 1 000 mPas, vorzugsweise 100 bis 500 mPas (gemessen mit einem Brookfield Viskosimeter und einer Temperatur von 22°C). Die Viskosität nimmt während 4 Wochen Lagerung bei 40°C vorzugsweise maximal auf weniger als den zweifachen Wert der Anfangsviskosität unmittelbar nach der Herstellung zu. Bei der Herstellung der wässrigen Dispersionen liegt der pH-Wert vorzugsweise in dem Bereich von 3 bis 4. Man erhält in der Regel wässrige Leimungsmittel-Dispersionen mit einer mittleren Teilchengröße der Leimungsmittel in dem Bereich von 100 bis 3 000 nm, vorzugsweise 250 bis 2 000 nm.The paper sizing agent of the invention has a viscosity e.g. in the range of 20 to 1,000 mPas, preferably 100 to 500 mPas (measured with a Brookfield viscometer and a temperature of 22 ° C). Viscosity during 4 weeks of storage at 40 ° C preferably increases at most to less than twice the initial viscosity immediately after production. In the preparation of the aqueous dispersions, the pH is preferably in the range of 3 to 4. As a rule, aqueous sizing agent dispersions having a mean particle size of the sizing agents in the range of 100 to 3,000 nm, preferably 250 to 2,000 nm.
Die erfindungsgemäßen Dispersionen werden als Masseleimungsmittel bei der Herstellung von Papier, Pappe und Karton eingesetzt. Die Herstellung von Papier, Pappe und Karton erfolgt Üblicherweise durch Entwässern einer Aufschlämmung von Cellulosefasern. Als Cellulosefasern kommen sämtliche dafür gängigen Typen in Betracht, z.B. Cellulosefasern aus Holzstoff und allen Einjahrespflanzen gewonnenen Fasern in Be-tracht. Zu Holzstoff gehören beispielsweise Holzschliff, thermomechanischer Stoff (TMP), chemothermomechanischer Stoff (CTMP), Druckschliff, Halbzellstoff, Hochausbeutezellstoff und Refiner Mechanical Pulp (RMP) sowie Altpapier. Außerdem eignen sich Zellstoffe, die in gebleichter oder ungebleichter Form verwendet werden können. Beispiele hierfür sind Sulfat-, Sulfit- und Natronzellstoff. Vorzugsweise verwendet man ungebleichte Zellstoffe, die auch als ungebleichter Kraftzellstoff bezeichnet werden. Die genannten Faserstoffe können allein oder in Mischung verwendet werden.The dispersions according to the invention are used as engine size agents in the production of paper, board and cardboard. The production of paper, paperboard and cardboard is usually done by dewatering a slurry of cellulosic fibers. Suitable cellulosic fibers are all conventional types, for example cellulosic fibers from wood pulp and fibers obtained from annual plants in Be-tracht. Wood pulp includes, for example, groundwood, thermomechanical pulp (TMP), chemothermomechanical pulp (CTMP), pressure groundwood, semi-pulp, high yield pulp, and refiner mechanical pulp (RMP) as well as waste paper. Also suitable are pulps that can be used in bleached or unbleached form. Examples include sulphate, sulphite and soda pulps. Preferably, unbleached pulps, also referred to as unbleached kraft pulp, are used. The fibers mentioned can be used alone or in a mixture.
Der pH-Wert der Cellulosefaseraufschlämmung beträgt beispielsweise 4 bis 8, vorzugsweise 6 bis 8. Die Entwässerung des Papierstoffs kann diskontinuierlich oder kontinuierlich auf einer Papiermaschine vorgenommen werden.The pH of the cellulose fiber slurry is, for example, 4 to 8, preferably 6 to 8. The dewatering of the stock can be carried out batchwise or continuously on a paper machine.
Nach dem Entwässern des Papierstoffs und Trocknen des Papierprodukts erhält man in der Masse geleimte Papierprodukte wie Papier, Pappe oder Karton mit einem Flächengewicht von z.B. 20 bis 400 g/m2, vorzugsweise 40 bis 220 g/m2.After dewatering the paper stock and drying the paper product, paper products sized as paper, paperboard or cardboard with a weight per unit area of, for example, 20 to 400 g / m 2 , preferably 40 to 220 g / m 2, are obtained .
Das Entwässern des Papierstoffs erfolgt vorzugsweise zusätzlich in Gegenwart eines Retentionsmittels. Neben anionischen Retentionsmitteln oder nichtionischen Retentionsmitteln wie Polyacrylamiden werden bevorzugt kationische Polymere als Retentions- und als Entwässerungshilfsmittel eingesetzt. Dadurch wird eine signifikante Verbesserung der Runnability der Papiermaschinen erreicht.The dewatering of the paper stock is preferably carried out additionally in the presence of a retention agent. In addition to anionic retention aids or nonionic retention aids such as polyacrylamides, cationic polymers are preferably used as retention aids and as drainage aids. This achieves a significant improvement in the runnability of the paper machines.
Als kationische Retentionsmittel kann man sämtliche dafür im Handel erhältlichen Produkte verwenden. Hierbei handelt es sich beispielsweise um kationische Polyacrylamide, Polydiallyldimethylammoniumchloride, hochmolekulare Polyvinylamine, hochmolekulare Polyvinylamine mit K-Werten von mehr als 150, Polyethylenimine, Polyamine mit einer Molmasse von mehr als 50 000, modifizierte Polyamine, die mit Ethylenimin gepfropft und gegebenenfalls vernetzt sind, Polyetheramide, Polyvinylimidazole, Polyvinylpyrrolidine, Polyvinylimidazoline, Polyvinyltetrahydropyrine, Poly(dialkylamino-alkylvinylether), Poly(dialkylaminoalkyl(meth)acrylate) in protonierter oder in quaternierter Form sowie um Polyamidoamine aus einer Dicarbonsäure wie Adipinsäure und Polyalkylenpolyaminen wie Diethylentriaminamin, die mit Ethylenimin gepfropft und mit Polyethylenglykoldichlorhydrinethern gemäß der Lehre der
Die kationischen Polymerisate, die als Retentionsmittel eingesetzt werden, haben beispielsweise K-Werte nach Fikentscher von mehr als 150 (bestimmt in 5 %iger wässriger Kochsalzlösung bei einer Polymerkonzentration von 0,5 Gew.-%, einer Temperatur von 25 °C und einem pH-Wert von 7). Sie werden vorzugsweise in Mengen von 0,01 bis 0,3 Gew.-%, bezogen auf trockene Cellulosefasern, eingesetzt.The cationic polymers used as retention aids have, for example, Fikentscher K values of greater than 150 (determined in 5% aqueous common salt solution at a polymer concentration of 0.5% by weight, a temperature of 25 ° C. and a pH Value of 7). They are preferably used in amounts of 0.01 to 0.3 wt .-%, based on dry cellulose fibers.
Falls nötig, können weitere Hilfsmittel wie sie dem Fachmann aus der Literatur bekannt sind, dem Papierstoff vor der Blattbildung zugesetzt werden. Dabei handelt es sich beispielsweise um Fixiermittel, Verfestiger und Entschäumer.If necessary, other adjuvants known to those skilled in the literature may be added to the stock prior to sheet formation. These are, for example, fixing agents, solidifiers and defoamers.
Weiterhin betrifft die vorliegende Erfindung die Verwendung des erfindungsgemäßen Papierleimungsmittels als Masseleimungsmittel zur Herstellung von Papier, Pappe und Karton.Furthermore, the present invention relates to the use of the paper sizing agent according to the invention as a sizing agent for the production of paper, cardboard and cardboard.
Die folgenden Beispiele sollen die Erfindung erläutern, ohne sie jedoch einzuschränken.The following examples are intended to illustrate the invention without, however, limiting it.
Falls sich aus dem Zusammenhang nichts anderes ergibt, bedeuten die Prozentangaben in den Beispielen Gewichtsprozent. Die K-Werte wurden nach
Die Tintenschwimmdauer (gemessen in Minuten) ist diejenige Zeit, die eine Prüftinte nach DIN 53 126 bis zum 50 %igen Durchschlag durch ein Testblatt benötigt.The ink buoyancy time (measured in minutes) is the time required for a test ink according to DIN 53 126 to 50% penetration through a test sheet.
Die Bestimmung erfolgte nach DIN 53 132 durch Lagerung der Papierblätter für einen Zeitraum von 60 Sekunden in Wasser. Die Wasseraufnahme wird in g/m2 angegeben.The determination was carried out according to DIN 53 132 by storage of the paper sheets for a period of 60 seconds in water. The water absorption is given in g / m 2 .
Das Papierblatt wird von beiden Seiten mit einem Klebeband streifenfrei beschichtet. Dann werden daraus Streifen mit den Maßen 25 x 75 mm geschnitten. Diese Teststreifen werden in ein 30 %iges Wasserstoffperoxid-Bad bei 70 °C bzw. in ein 3 %iges Milchsäure-Bad bei 25 °C getaucht. Die Kantenpenetration wird durch Differenzwägung der trockenen Teststreifen und der in das Bad getauchten Teststreifen ermittelt.The paper sheet is coated on both sides with an adhesive tape streak-free. Then strips are cut with the dimensions 25 x 75 mm. These test strips are immersed in a 30% hydrogen peroxide bath at 70 ° C or in a 3% lactic acid bath at 25 ° C. The edge penetration is determined by differential weighing of the dry test strips and the dip in the bath test strip.
Kationisches Polymer, das durch Hydrolyse von Poly-N-Vinylformamid mit einem K-Wert von 50 bis zu einem Hydrolysegrad von 95 mol-% erhalten wurde, d. h. es handelte sich um ein Polymerisat, das etwa 95 mol-% Vinylamin-Einheiten und etwa 5 mol-% Vinylformamid-Einheiten enthielt. Das Polymer wurde mit Ameisensäure auf pH 3,7 eingestellt.Cationic polymer obtained by hydrolysis of poly-N-vinylformamide having a K value of 50 to a degree of hydrolysis of 95 mol%, d. H. it was a polymer containing about 95 mole% vinylamine units and about 5 mole% vinylformamide units. The polymer was adjusted to pH 3.7 with formic acid.
Kationisches Polymer, das durch Hydrolyse von Poly-N-Vinylformamid mit einem K-Wert von 45 bis zu einem Hydrolysegrad von 75 mol-% erhalten wurde, d. h. es handelte sich um ein Polymerisat, das etwa 75 mol-% Vinylamin-Einheiten und etwa 25 mol-% Vinylformamid-Einheiten enthielt). Das Polymer wurde mit Ameisensäure auf pH 3,7 eingestellt.Cationic polymer obtained by hydrolysis of poly-N-vinylformamide having a K value of 45 to a degree of hydrolysis of 75 mol%, d. H. it was a polymer containing about 75 mole% vinylamine units and about 25 mole% vinylformamide units). The polymer was adjusted to pH 3.7 with formic acid.
Man erwärmte 30 Gew.-Teile einer 5 Gew.-%igen Lösung einer kationischen Stärke (mit N,N-Dimethylaminoethylchlorid modifizierte Stärke, DS 0,1) auf 95 °C, rührte 5,7 Gew.-Teile einer 5 Gew.-%igen Lösung von Naphthalinsulfonsäure-Formaldehydkondensat-Natriumsalz ein, mischte mit 19,3 Gew.-Teilen Wasser und versetzte anschließend mit 20 Gew.-Teilen einer Schmelze von C16-C18-Alkylketendimer mit einer Temperatur von 90 °C. Zu der erhaltenen Emulsion gab man bei 90°C 25 Gew.-Teile einer 12 Gew.-%igen wässrigen Lösung von Polyvinylamin 1.It warmed 30 parts by weight of a 5 wt .-% solution of a cationic starch (with N, N-dimethylaminoethyl chloride modified starch, DS 0.1) to 95 ° C, stirred 5.7 parts by weight of a 5 wt. -% solution of naphthalenesulfonic acid-formaldehyde condensate sodium salt, mixed with 19.3 parts by weight of water and then added with 20 parts by weight of a melt of C 16 -C 18 -Alkylketendimer at a temperature of 90 ° C. To the resulting emulsion was added at 90 ° C 25 parts by weight of a 12 wt .-% aqueous solution of polyvinylamine first
Man homogenisierte das Gemisch mittels eines Hochdruckhomogenisators bei 100 bar und 75 °C in zwei Durchgängen und kühlte rasch mit Eis.The mixture was homogenized by means of a high-pressure homogenizer at 100 bar and 75 ° C in two passes and cooled rapidly with ice.
Die erhaltene Dispersion wies eine Viskosität von 80 mPas (22 °C) und eine mittlere Teilchengröße von 1,3 µm auf. Nach 4 Wochen Lagerung bei 40°C hatte die Dispersion eine Viskosität von 120 mPas.The dispersion obtained had a viscosity of 80 mPas (22 ° C.) and an average particle size of 1.3 μm. After 4 weeks of storage at 40 ° C, the dispersion had a viscosity of 120 mPas.
Beispiel 1 wurde wiederholt, wobei man jedoch zur vorgelegten Lösung der kationischen Stärke zuerst die Lösung des Naphthalinsulfonsäure-Formaldehydkondensat-Natriumsalzes und dann des Polyvinylamins 1 gab. Man versetzte das Gemisch mit der Schmelze des Alkylketendimers.Example 1 was repeated except that the solution of the naphthalenesulfonic acid-formaldehyde condensate sodium salt and then the polyvinylamine 1 was added first to the initially introduced cationic starch solution. The mixture was mixed with the melt of the alkyl ketene dimer.
Danach emulgierte man mit einem schnelldrehenden Rührer und homogenisierte in zwei Durchgängen im Hochdruckhomogenisator wie beschrieben.Then emulsified with a high speed stirrer and homogenized in two passes in the high pressure homogenizer as described.
Die erhaltene Dispersion wies eine Viskosität von 100 mPas (22 °C) und eine mittlere Teilchengröße von 1,5 µm auf. Nach 4 Wochen Lagerung bei 40 °C hatte die Dispersion eine Viskosität von 180 mPas.The dispersion obtained had a viscosity of 100 mPas (22 ° C.) and an average particle size of 1.5 μm. After 4 weeks of storage at 40 ° C, the dispersion had a viscosity of 180 mPas.
Beispiel 1 wurde wiederholt, wobei man jedoch zur vorgelegten Lösung der kationischen Stärke zuerst die Lösung des Polyvinylamins 1 und dann des Naphthalinsulfonsäure-Formaldehydkondensat-Natriumsalzes gab. Man versetzte das Gemisch mit der Schmelze des Alkylketendimers.Example 1 was repeated except that the solution of the cationic starch initially introduced was first the solution of the polyvinylamine 1 and then the naphthalenesulfonic acid-formaldehyde condensate sodium salt. The mixture was mixed with the melt of the alkyl ketene dimer.
Danach emulgierte man mit einem schnelldrehenden Rührer und homogenisierte in zwei Durchgängen im Hochdruckhomogenisator wie beschrieben.Then emulsified with a high speed stirrer and homogenized in two passes in the high pressure homogenizer as described.
Die erhaltene Dispersion wies eine Viskosität von 250 mPas (22 °C) und eine mittlere Teilchengröße von 2,5 µm auf. Nach 4 Wochen Lagerung bei 40 °C war die Dispersion koaguliert und fest.The dispersion obtained had a viscosity of 250 mPas (22 ° C.) and an average particle size of 2.5 μm. After 4 weeks storage at 40 ° C, the dispersion was coagulated and solid.
Beispiel 1 wurde wiederholt, wobei man jedoch 22 Gew.-Teile einer 18 Gew.-%igen Lösung des Polyvinylamins 2 an Stelle des Polyvinylamins 1 verwendete.Example 1 was repeated except that 22 parts by weight of an 18% strength by weight solution of polyvinylamine 2 was used instead of polyvinylamine 1.
Die erhaltene Dispersion wies eine Viskosität von 150 mPas (22 °C) und eine mittlere Teilchengröße von 1,4 µm auf. Nach 4 Wochen Lagerung bei 40 °C hatte die Dispersion eine Viskosität von 300 mPas.The dispersion obtained had a viscosity of 150 mPas (22 ° C.) and an average particle size of 1.4 μm. After 4 weeks of storage at 40 ° C, the dispersion had a viscosity of 300 mPas.
Beispiel 4 wurde wiederholt, wobei man jedoch die Lösung des Polyvinylamins 2 nach dem Homogenisieren und Abkühlen zugab.Example 4 was repeated, but adding the solution of polyvinylamine 2 after homogenization and cooling.
Die erhaltene Dispersion wies eine Viskosität von 250 mPas (22 °C) und eine mittlere Teilchengröße von 2,8 µm auf. Nach 4 Wochen Lagerung bei 40 °C war die Dispersion fest.The dispersion obtained had a viscosity of 250 mPas (22 ° C.) and an average particle size of 2.8 μm. After 4 weeks of storage at 40 ° C, the dispersion was solid.
Man erwärmte 50 Gew.-Teile einer 5 Gew.-%igen Lösung einer kationischen Stärke (DS 0,1) auf 95 °C, rührte 5,7 Gew.-Teile einer 5 Gew.-%igen Lösung von Naphthalinsulfonsäure-Formaldehydkondensat-Natriumsalz ein, mischte mit 24,3 Gew.-Teilen Wasser und versetzte anschließend mit 20 Gew.-Teilen einer Schmelze von C16-C18-Alkylketendimer mit einer Temperatur von 90 °C und emulgierte mit einem schnelldrehenden Rührer.It warmed 50 parts by weight of a 5 wt .-% solution of a cationic starch (DS 0.1) to 95 ° C, stirred 5.7 parts by weight of a 5 wt .-% solution of naphthalenesulfonic acid-formaldehyde condensate Sodium salt, mixed with 24.3 parts by weight of water and then added with 20 parts by weight of a melt of C 16 -C 18 -Alkylketendimer at a temperature of 90 ° C and emulsified with a high speed stirrer.
Man homogenisierte das Gemisch mittels eines Hochdruckhomogenisators bei 100 bar und 75 °C in zwei Durchgängen und kühlte rasch mit Eis.The mixture was homogenized by means of a high-pressure homogenizer at 100 bar and 75 ° C in two passes and cooled rapidly with ice.
Die erhaltene Dispersion wies eine Viskosität von 50 mPas (22 °C) und eine mittlere Teilchengröße von 1,4 µm auf. Nach 4 Wochen Lagerung bei 40 °C hatte die Dispersion eine Viskosität von 130 mPas.The dispersion obtained had a viscosity of 50 mPas (22 ° C.) and an average particle size of 1.4 μm. After 4 weeks of storage at 40 ° C, the dispersion had a viscosity of 130 mPas.
Man erwärmte 52,3 Gew.-Teile entionisiertes Wasser auf 90°C, rührte 5,7 Gew.-Teile einer 5 Gew.-%igen Lösung von Naphthalinsulfonsäure-Formaldehydkondensat-Natriumsalz ein und versetzte anschließend mit 22 Gew.-Teilen einer 18 Gew.-%igen Lösung von Polyvinylamin 2. In das 90 °C heiße Gemisch gab man 20 Gew.-Teile einer Schmelze von C16-C18-Alkylketendimer mit einer Temperatur von 90 °C und emulgierte mit einem schnelldrehenden Rührer.Was heated 52.3 parts by weight of deionized water to 90 ° C, stirred 5.7 parts by weight of a 5 wt .-% solution of naphthalenesulfonic acid-formaldehyde condensate sodium salt and then added with 22 parts by weight of a 18th Wt .-% solution of polyvinylamine 2. In the 90 ° C hot mixture was added 20 parts by weight of a melt of C 16 -C 18 -Alkylketendimer at a temperature of 90 ° C and emulsified with a high speed stirrer.
Man homogenisierte das Gemisch mittels eines Hochdruckhomogenisators bei 100 bar und 75 °C in zwei Durchgängen und kühlte rasch mit Eis.The mixture was homogenized by means of a high-pressure homogenizer at 100 bar and 75 ° C in two passes and cooled rapidly with ice.
Die erhaltene Dispersion wies eine Viskosität von 40 mPas (22 °C) und eine mittlere Teilchengröße von 0,9 µm auf. Nach 4 Wochen Lagerung bei 40 °C hatte die Dispersion eine Viskosität von 900 mPas.The dispersion obtained had a viscosity of 40 mPas (22 ° C.) and an average particle size of 0.9 μm. After 4 weeks storage at 40 ° C, the dispersion had a viscosity of 900 mPas.
Die Vergleichsbeispiele 3 und 5 zeigen, dass keine stabile Dispersion erhalten wird, wenn das stickstoffhaltige Polymer vorgelegt wird (Vergleichsbeispiel 3) oder nach dem Dispergierschritt zugegeben wird (Vergleichsbeispiel 5). Die Vergleichsbeispiele 6 und 7 zeigen die Viskositätszunahme von Dispersionen, die kein stickstoffhaltiges Polymer (Vergleichsbeispiel 6) bzw. keine kationische Stärke enthalten (Vergleichsbeispiel 7) bei 4 Wochen Lagerung bei 40 °C.Comparative Examples 3 and 5 show that no stable dispersion is obtained when the nitrogen-containing polymer is charged (Comparative Example 3) or added after the dispersing step (Comparative Example 5). Comparative Examples 6 and 7 show the viscosity increase of dispersions which are not nitrogen-containing polymer (Comparative Example 6) or contain no cationic starch (Comparative Example 7) at 4 weeks storage at 40 ° C.
Zu einem Papierstoff mit einer Stoffdichte von 8 g/l aus einer vollständig gebleichten Mischung von 70 % Kiefern- und 30 % Birkensulfatzellstoff mit einem Mahlgrad von 35 ° (Schopper-Riegler) gab man, jeweils bezogen auf trockenes Cellulosefasergemisch, die in der Tabelle 1 angegebenen Mengen der obigen Dispersionen, 20 Gew.-% Calciumcarbonat, 0,6 Gew.-% einer kationischen Maisstärke und 0,04 Gew.-% eines kationischen Polyacrylamids (Polymin® KE2020) als Retentionsmittel. Der pH-Wert der Mischungen wurde auf 7 eingestellt. Die Mischungen wurden anschließend auf einem Rapid-Köthen-Blattbildner zu einem Blatt mit einem Flächengewicht von 80 g/m2 verarbeitet. Das Blatt wurde dann auf einem mit Dampf beheizten Trockenzylinder bei einer Temperatur von 90 °C auf einen Wassergehalt von 7 % getrocknet. Unmittelbar nach dem Trocknen wurde der Cobb-Wert der Blätter bestimmt. Die Blätter wurden dann 24 Stunden bei 25 °C und einer relativen Luftfeuchtigkeit von 50 % gelagert. Die Messungen wurden anschließend wiederholt. Die dabei erhaltenen Ergebnisse sind in der Tabelle 1 angegeben.
Zu einem Papierstoff mit einer Stoffdichte von 8 g/l aus 100 % Altpapier gab man, jeweils bezogen auf trockenes Cellulosefasergemisch, die in der Tabelle 2 angegebenen Mengen der obigen Dispersionen, 0,6 Gew.-% einer kationischen Maisstärke und 0,04 Gew.-% eines kationischen Polyacrylamids (Polymin® KE2020) als Retentionsmittel. Der pH-Wert der Mischungen wurde auf 7 eingestellt. Die Mischungen wurden anschließend auf einem Rapid-Köthen-Blattbildner zu einem Blatt mit einem Flächengewicht von 100 g/m2 verarbeitet. Das Blatt wurde dann auf einem mit Dampf beheizten Trockenzylinder bei einer Temperatur von 90 °C auf einen Wassergehalt von 7 % getrocknet. Die Blätter wurden dann 24 Stunden bei 25 °C und einer relativen Luftfeuchtigkeit von 50 % gelagert. Die Messungen wurden anschließend wiederholt. Die dabei erhaltenen Ergebnisse sind in der Tabelle 2 angegeben.
Zu einem Papierstoff mit einer Stoffdichte von 8 g/l aus einer vollständig gebleichten Mischung von 70 % Kiefern- und 30 % Birkensulfatzellstoff mit einem Mahlgrad von 35° (Schopper-Riegler) gab man, jeweils bezogen auf trockenes Cellulosefasergemisch, die in der Tabelle 3 angegebenen Mengen der obigen Dispersionen, 20 Gew.-% Calciumcarbonat, 0,75 Gew.-% einer kationischen Maisstärke und 0,04 Gew.-% eines kationischen Polyacrylamids (Polymin® KE2020) als Retentionsmittel. Der pH-Wert der Mischungen wurde auf 7 eingestellt. Die Mischungen wurden anschließend auf einem Rapid-Köthen-Blattbildner zu einem Blatt mit einem Flächengewicht von 150 g/m2 verarbeitet. Das Blatt wurde dann auf einem mit Dampf beheizten Trockenzylinder bei einer Temperatur von 90 °C auf einen Wassergehalt von 7 % getrocknet. Anschließend wurden die Blätter von beiden Seiten mit einem Klebeband streifenfrei beschichtet. Aus den Blättern wurden Streifen mit den Maßen 25 x 75 mm geschnitten. Die Teststreifen wurden in ein 30 %iges Wasserstoffperoxid-Bad bei 70 °C. Die Kantenpenetration wurde durch Differenzwägung ermittelt. Die dabei erhaltenen Ergebnisse sind in der Tabelle 3 angegeben.
Claims (11)
- A paper size comprisinga) a stable aqueous dispersion of a reactive size,b) from 5 to 100% by weight, based on the reactive size, of a substantially linear nitrogen-comprising polymer having at least 3 mmol/g of basic nitrogen atoms,c) from 1 to 50% by weight, based on the reactive size, of cationic starch having a degree of substitution of at least 0.05.
- The paper size according to claim 1, wherein at least 90 mol% of the basic nitrogen atoms in the nitrogen-comprising polymer have been protonated.
- The paper size according to claim 2, wherein the basic nitrogen atoms have been protonated by reaction with a carboxylic acid.
- The paper size according to any of claims 1 to 3, wherein the nitrogen-comprising polymer is a vinylamine polymer.
- The paper size according to claim 4, wherein the vinylamine polymer is a homo-or copolymer of N-vinylformamide, from 25 to 100 mol% of whose N-vinylformamide units have been hydrolyzed.
- The paper size according to any of claims 1 to 5, which additionally comprises an anionic dispersant.
- The paper size according to any of claims 1 to 6, wherein the reactive size is selected from(i) C12- to C22-alkylketene dimers,(ii) C5- to C22-alkyl- or C5- to C22-alkenylsuccinic anhydrides and(iii) C12- to C36-alkyl isocyanates and/or organic isocyanates.
- The paper size according to any of claims 1 to 7, which comprises from 1 to 50% by weight of reactive size.
- A process for the preparation of a paper size according to any of claims 6 to 8, in whicha) an aqueous solution of the cationic starch and of the anionic dispersant is initially taken,b) the reactive size and the nitrogen-comprising polymer are added in any desired sequence, andc) the mixture obtained is subjected to a dispersing step.
- A process for the production of paper, board or cardboard, a paper size according to any of claims 1 to 8 being added to an aqueous slurry of cellulose fibers, and the paper stock being drained.
- The use of the paper size according to any of claims 1 to 8 as an engine size in the production of paper, board, cardboard and cardboard packaging for liquid.
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EP1756188B1 (en) * | 2004-06-08 | 2007-12-05 | Basf Aktiengesellschaft | Amphiphilic polymer compositions and their use |
JP2009540033A (en) * | 2006-06-09 | 2009-11-19 | ビーエーエスエフ ソシエタス・ヨーロピア | Aqueous dispersion of alkyl ketene dimer |
JP2010513734A (en) * | 2006-12-20 | 2010-04-30 | ビーエーエスエフ ソシエタス・ヨーロピア | Paper sizing mixture |
AT506695B1 (en) * | 2008-11-14 | 2009-11-15 | Kemira Chemie Ges Mbh | COMPOSITION FOR PAPER LUBRICATION |
DE102009036344A1 (en) * | 2009-08-06 | 2011-02-10 | Bk Giulini Gmbh | Sizing agent for paper |
ES2432239T3 (en) | 2009-12-18 | 2013-12-02 | Hercules Incorporated | Paper sizing composition |
CA2792944C (en) * | 2010-04-07 | 2018-05-08 | Hercules Incorporated | Stable and aqueous compositions of polyvinylamines with cationic starch, and utility for papermaking |
DE102010020249A1 (en) | 2010-05-11 | 2011-11-17 | Cs Compact System Gmbh | Emulsifying a sizing agent for paper production, comprises emulsifying sizing agent together with a polymer exhibiting monomers of acrylamide and/or monomers based on acrylamide |
AT512143B1 (en) * | 2011-11-08 | 2013-12-15 | Chemiefaser Lenzing Ag | Cellulose fibers with hydrophobic properties and high softness and the associated manufacturing process |
WO2014132175A1 (en) * | 2013-03-01 | 2014-09-04 | Basf Se | Aqueous emulsion of a sizing agent |
WO2014144025A1 (en) * | 2013-03-15 | 2014-09-18 | Dober Chemical Corp. | Dewatering compositions and methods |
CN104963240B (en) * | 2015-06-12 | 2017-03-22 | 金东纸业(江苏)股份有限公司 | Coated paper and making method thereof |
CN105061774B (en) * | 2015-09-22 | 2017-10-17 | 东乡县鹤达实业有限公司 | A kind of paper making intensifier and preparation method thereof |
CN105297433B (en) * | 2015-10-30 | 2017-06-09 | 广西泰亿诺环保科技有限公司 | A kind of gypsum fiber flexible modifying agent and preparation method thereof |
CN110894698A (en) * | 2018-09-12 | 2020-03-20 | 上海昶法新材料有限公司 | Cationic sizing agent and preparation method and application thereof |
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US3223544A (en) | 1963-03-19 | 1965-12-14 | American Cyanamid Co | Manufacture of cationic paper sizing ketene dimer emulsions |
US4606773A (en) * | 1984-12-10 | 1986-08-19 | Nalco Chemical Company | Emulsification of alkenyl succinic anhydride sizing agents |
CA1283748C (en) * | 1986-06-25 | 1991-04-30 | Takaharu Itagaki | Vinylamine copolymer, flocculating agent and paper strength increasingagent using the same, as well as process for producing the same |
US5688886A (en) * | 1993-08-06 | 1997-11-18 | Showa Highpolymer Co., Ltd. | Acrylic rubber composition |
DE19505751A1 (en) | 1995-02-20 | 1996-08-22 | Basf Ag | Aqueous alkyldiketene dispersions and their use as sizing agents for paper |
DE19540998A1 (en) * | 1995-11-03 | 1997-05-07 | Basf Ag | Aqueous alkyldiketene dispersions and their use as sizing agents for paper |
US6315824B1 (en) * | 1996-02-02 | 2001-11-13 | Rodrigue V. Lauzon | Coacervate stabilizer system |
DE19610995C2 (en) * | 1996-03-21 | 2002-12-19 | Betzdearborn Inc | Paper sizing agents and processes |
DE19710616A1 (en) * | 1997-03-14 | 1998-09-17 | Basf Ag | Aqueous dispersions of reactive sizing agents, process for their preparation and their use |
FI103735B1 (en) * | 1998-01-27 | 1999-08-31 | Kemira Chemicals Oy | A hydrophobising system for paper or similar fibrous products |
US6869471B2 (en) * | 2001-11-19 | 2005-03-22 | Akzo Nobel N.V. | Process for sizing paper and sizing composition |
DE10162052A1 (en) * | 2001-12-17 | 2003-06-26 | Basf Ag | Production of paper or cardboard with enhanced whiteness involves treating the pulp with a mixture of linear, cationic polyelectrolyte and optical brightener |
DE10237911A1 (en) * | 2002-08-14 | 2004-02-26 | Basf Ag | Use of polymers comprising vinylamine units as promoters for bulk sizing of paper with alkyl diketenes |
TW200504265A (en) * | 2002-12-17 | 2005-02-01 | Bayer Chemicals Corp | Alkenylsuccinic anhydride surface-applied system and uses thereof |
DE102004010447A1 (en) | 2004-03-01 | 2005-09-22 | Basf Ag | Aqueous dispersion of reactive sizing agents, process for their preparation and their use |
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