EP0801700A1 - Use of optically brightened plastics for optically brightening paper-coating compounds and paper-coating compounds optically brightened in this manner - Google Patents
Use of optically brightened plastics for optically brightening paper-coating compounds and paper-coating compounds optically brightened in this mannerInfo
- Publication number
- EP0801700A1 EP0801700A1 EP95943210A EP95943210A EP0801700A1 EP 0801700 A1 EP0801700 A1 EP 0801700A1 EP 95943210 A EP95943210 A EP 95943210A EP 95943210 A EP95943210 A EP 95943210A EP 0801700 A1 EP0801700 A1 EP 0801700A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- white
- tinted
- plastics
- paper
- optically
- 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.)
- Granted
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 41
- 239000011248 coating agent Substances 0.000 title claims abstract description 40
- 229920003023 plastic Polymers 0.000 title claims abstract description 26
- 239000004033 plastic Substances 0.000 title claims abstract description 26
- 150000001875 compounds Chemical class 0.000 title abstract description 7
- 238000005282 brightening Methods 0.000 title description 3
- 239000010419 fine particle Substances 0.000 claims abstract description 6
- 239000000123 paper Substances 0.000 claims description 35
- 239000000843 powder Substances 0.000 claims description 20
- 239000004952 Polyamide Substances 0.000 claims description 18
- 229920002647 polyamide Polymers 0.000 claims description 18
- 229920000728 polyester Polymers 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 14
- 238000000227 grinding Methods 0.000 claims description 9
- 239000013543 active substance Substances 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- 229920002678 cellulose Polymers 0.000 claims description 6
- 239000001913 cellulose Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 230000002087 whitening effect Effects 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 4
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 238000010411 cooking Methods 0.000 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- 235000011054 acetic acid Nutrition 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 150000001450 anions Chemical class 0.000 claims description 2
- 238000000265 homogenisation Methods 0.000 claims description 2
- 150000002431 hydrogen Chemical class 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000004310 lactic acid Substances 0.000 claims description 2
- 235000014655 lactic acid Nutrition 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 description 22
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000003995 emulsifying agent Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 125000000129 anionic group Chemical group 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000000049 pigment Substances 0.000 description 4
- 238000001291 vacuum drying Methods 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 229920003180 amino resin Polymers 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- PAFZNILMFXTMIY-UHFFFAOYSA-N cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000003165 hydrotropic effect Effects 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000847 nonoxynol Polymers 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- SLWIPPZWFZGHEU-UHFFFAOYSA-N 2-[4-(carboxymethyl)phenyl]acetic acid Chemical compound OC(=O)CC1=CC=C(CC(O)=O)C=C1 SLWIPPZWFZGHEU-UHFFFAOYSA-N 0.000 description 1
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 1
- 229920005789 ACRONAL® acrylic binder Polymers 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 241001479434 Agfa Species 0.000 description 1
- RXRBXRIWFKOICY-UHFFFAOYSA-N N1=NN=C(C=C1)C(=C(C1=C(C(=C(C=C1)N)S(=O)(=O)O)S(=O)(=O)O)C1=NN=NC=C1)C1=CC=CC=C1 Chemical compound N1=NN=C(C=C1)C(=C(C1=C(C(=C(C=C1)N)S(=O)(=O)O)S(=O)(=O)O)C1=NN=NC=C1)C1=CC=CC=C1 RXRBXRIWFKOICY-UHFFFAOYSA-N 0.000 description 1
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 1
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 description 1
- 229940081735 acetylcellulose Drugs 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920005670 poly(ethylene-vinyl chloride) Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 239000004627 regenerated cellulose Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- ILJSQTXMGCGYMG-UHFFFAOYSA-N triacetic acid Chemical compound CC(=O)CC(=O)CC(O)=O ILJSQTXMGCGYMG-UHFFFAOYSA-N 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
- 239000000080 wetting agent 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
- D21H21/28—Colorants ; Pigments or opacifying agents
- D21H21/285—Colorants ; Pigments or opacifying agents insoluble
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/42—Coatings with pigments characterised by the pigments at least partly organic
-
- 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
- D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching
Definitions
- the invention relates to the use of white-tinted, finely divided plastics for
- aqueous coating slips based on polymeric binders are used to produce coated papers and cardboard boxes.
- Common binders for paper coating slips include, for example, butadiene / styrene,
- Styrene / butyl acrylate acrylonitrile / butadiene / styrene, styrene / butadiene / acrylic acid alkyl ester, acrylic acid alkyl ester, ethylene-vinyl chloride and ethylene-vinyl acetate copolymers as well as the homopolymers polyethylene, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate and polyaddition compounds such as polyurethanes.
- the coating slips for optical brightening usually contain anionic white tones, e.g. those of the bis-triazinyl-aminostilbene-disulfonic acid type.
- anionic white tones e.g. those of the bis-triazinyl-aminostilbene-disulfonic acid type.
- the types of white toner mentioned in the coating slips do not have adequate lightfastness.
- the invention therefore relates to the use of white-toned, finely divided plastics from the series of polyacrylonitrile, polyamide, polyester, polyolefins, vinyl aromatic polymers and cellulose or cellulose regenerates for whitening paper coating slips based on synthetic binders
- the plastics on which the white-toned plastics to be used according to the invention are based include polyacrylonitriles, polyamides, such as, for example, polyamide-6 and polyamide-6 6, and polyesters, in particular those based on phthalic acid, iso- and / or terephthalic acid and ethylene glycol, butanediol-1,4 and / or bis (hydroxymethyl) cyclohexane, polyester based on maleic acid and / or fumaric acid and / or p-phenylenediacetic acid and / or 44'-diphenyldicarboxylic acid and / or 2 6-naphthalenedicarboxylic acid as well as ethylene glycol, polyester based on 4-hydroxybenzoic acid, polyolefins such as polyethylene and polypropylene, vinyl aromatic polymers such as polystyrene, cellulose and regenerated cellulose such as viscose and acetyl cellulose (especially cellulose di- and triacetate)
- fine particles are plastic powders with a particle size (determined as weight average) of less than 1 ⁇ m.
- preferred white tones For the selection of preferred white tones, the person skilled in the art can orientate himself on the optical brighteners which are used for white tones in the textile sector.
- Preferred whiteners result in comparatively high light fastnesses on textile fibers - measured in the Xenotest based on the guidelines for the determination of color fastnesses according to DIN 54004 - of at least 4, preferably from 5 to 7.
- Preferred white toners for finely divided polyacrylonitriles are compounds of the formulas:
- R represents ethyl or phenyl
- R 2 for H or SO 2 -CH. stand; and wherein
- Preferred white toners for finely divided polyamides are compounds of the formulas
- M represents an alkali metal or hydrogen
- Preferred white toners for finely divided polyesters are compounds of the formulas
- R 4 is phenyl or a radical of the formula
- R 5 is a radical of the formula
- R 6 and R 7 independently of one another are hydrogen, C 1 -C 4 alkyl or C 1 -C 4 alkoxycarbonyl and
- R 8 and R 9 independently of one another are hydrogen or C 1 -C 4 -alkyl
- R 10 is C 1 -C 4 alkyl, phenyl or C 1 -C 4 alkoxycarbonyl and
- the CN groups can each be in the o-, p- or m-position and their isomer mixtures;
- R 11 is C 1 -C 4 alkoxy-carbonyl.
- Very particularly preferred white-tinted plastics contain white-tinted polyacrylonitrile with white tones of the formulas (1) or (2), white-tinted polyamide with white tones of the formula (5), or white-tinted polyester with white tones of the formulas (6) or (7).
- the finely divided, white-tinted plastics can be incorporated into the paper coating slips in powder form. In most cases, however, it should be more convenient to disperse the finely divided plastics in the aqueous phase before or after the application of the white toner and, after the white toner has been applied, if appropriate, to incorporate the aqueous plastic dispersion obtained into the paper coating slips.
- plastic dispersions can A) 1 to 30% by weight, preferably 5 to 25% by weight of the white-tinted polymers, B) 1 to 50% by weight, preferably 5 to 20% by weight of surface-active substances, C) 0 to 15 wt .-% preservative and D) 20 to 98 wt .-%, preferably 55 to 90 wt .-% water, with up to half of the water by hydrotropic substances such as Ethylene glycol or glycerin can be replaced and the percentages relate to the sum of A + B + D.
- Anionic, cationic and / or non-ionic surface-active substances can be used as surface-active substances, such as are used, for example, in methods of organic chemistry (Houben-Weyl), 4th edition, vol. XIV / I, Georg Thieme Verlag, Stuttgart 1961, P. 190 f. and in DE-OS 2 334 769, pages 8 to 10 ( ⁇ GB-PS 1 417 071) are described. Dispersions of the finely divided, white-tinted plastics to be used according to the invention can be produced, for example, as follows:
- the powdered polymers are first treated with the white toners suitable for the selected substrate in aqueous systems at temperatures from 60 ° C. to the boiling temperature until the white toners are completely absorbed onto the substrate. If necessary, additional aids are used. However, the white tones can also be fixed in the melting process on the corresponding polymer materials.
- the amount of white toner used on the substrate depends on the desired lightening effect; it is between 0.01 and 5% by weight of pure active substance, based on the plastic used (solid).
- the isolated white-tinted plastic powder is then homogenized after the addition of a surface-active substance and, if appropriate, water, with vigorous stirring.
- the amount of the surface-active substance can then be increased, if necessary to the total amount required for the stability of the dispersion.
- the suspension obtained is then comminuted and ground wet.
- the pre-shredding can be done using stone or tooth colloid mills.
- the subsequent wet comminution can take place in colloid, vibratory, cone and vibromills as well as in dissolvers or in sub-micron dispersers.
- continuous agitator mills with grinding media preferably those made of SiO 2 with a diameter of 0.2 to 5 mm, are preferably used.
- the isolated white-tinted plastic powder can also be incorporated directly into the paper coating slips after dry grinding.
- a particularly advantageous way of producing a dispersion of white-tinted plastic is the combination of the whitening process and the grinding process:
- the powdered plastic together with the corresponding whitener, water and surface-active substances at temperatures from 60 ° C to the cooking temperature, if necessary, after Homogenization and pre-grinding, wet grinding as described above.
- the complete brightening takes place during the grinding process in the grinder, preferably in a continuous agitator mill with SiO 2 grinding media.
- the amount of white toner used in the paper coating slip depends on the desired white effect. In general, 0.01 to 0.5% by weight of pure white toner (based on the solids of the paper coating slip to be lightened) are sufficient.
- a particular advantage is that, depending on the coating composition, the graying limit that can be achieved is extremely high.
- the paper coating slips generally have solids contents of 35 to 80, preferably 40 to 70% by weight.
- the white-tinted, fine-particle plastic to be used according to the invention they generally contain (details based on solids) a) 100 to 150 parts by weight of inorganic pigment,
- binder 3 to 25 parts by weight of binder, of which up to half may consist of natural (i.e. non-synthetic) cobinder (such as starch, casein),
- Copolymers with a solids content of 48% (® Acronal S 320 D from BASF),
- 80 parts of water is a paper coating slip with a solids content of about 55%, the pH of which is adjusted to 9 with sodium hydroxide solution (coating slip 3).
- A) 150 g, b) 300 g and c) 450 g of dispersion according to Example 2 are incorporated into each 1 kg of the coating color according to Example 3.
- the coating slips 3 and 4 a) -c) are applied to paper with the aid of a hand-held squeegee or an experimental coating system and dried at 80.degree.
- Table 2 shows the degree of whiteness CIE of the papers after production and after exposure (1 week in daylight).
- the papers according to the invention show both an increased degree of whiteness and a significantly improved light fastness.
- corresponding amounts of white-toned polyacrylonitrile powder according to Example 1 can also be incorporated directly into this coating slip
- Example 7 Dispersion of white tinted polyamide
- Coating slips and paper coatings can be produced in the same way as described in Example 4. Instead of the pigment dispersion from Example 2, the corresponding amount of a pigment dispersion according to Example 7 is used. Table 4 shows the degree of whiteness CEE of the papers after production and after exposure (1 week in daylight).
- Example 7 25% of the white-tinted polyamide powder (1% of fixed brightener), 20% of emulsifier and 55% of water at room temperature are dispersed as described in Example 7. The resulting stable dispersion can be incorporated directly into the paper coating slip. Excellent lightening effects with high light fastness and bleeding fastness are obtained.
- polyester powder polyethylene terephthalate, Agfa
- an anionic dispersing agent ® Avolan IS, Bayer
- auxiliary agent Levegal PEW, Bayer
- Example 13 White-tinted polyester dispersion
- Example 1 also gives a polyester powder which is suitable for lightening paper coating slips and which, in the same way as described in Example 12, gives a stable pigment dispersion which can easily be incorporated into paper coating slips and there delivers excellent white effects with very high light fastness, high bleeding fastness and high graying limit.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9530524T SI0801700T1 (en) | 1995-01-05 | 1995-12-27 | Use of optically brightened plastics for optically brightening paper-coating compounds and paper-coating compounds optically brightened in this manner |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19500195A DE19500195A1 (en) | 1995-01-05 | 1995-01-05 | Use of white-tinted plastics for tinting paper coating slips and such white-tinted paper coating slips |
DE19500195 | 1995-01-05 | ||
PCT/EP1995/005133 WO1996021062A1 (en) | 1995-01-05 | 1995-12-27 | Use of optically brightened plastics for optically brightening paper-coating compounds and paper-coating compounds optically brightened in this manner |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0801700A1 true EP0801700A1 (en) | 1997-10-22 |
EP0801700B1 EP0801700B1 (en) | 2001-11-14 |
Family
ID=7751028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95943210A Expired - Lifetime EP0801700B1 (en) | 1995-01-05 | 1995-12-27 | Use of optically brightened plastics for optically brightening paper-coating compounds and paper-coating compounds optically brightened in this manner |
Country Status (7)
Country | Link |
---|---|
US (1) | US6387296B1 (en) |
EP (1) | EP0801700B1 (en) |
JP (1) | JPH10512626A (en) |
AT (1) | ATE208843T1 (en) |
DE (2) | DE19500195A1 (en) |
FI (1) | FI972850A (en) |
WO (1) | WO1996021062A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19644014C2 (en) * | 1996-10-31 | 1999-07-22 | Stora Publication Paper Ag | Paper with recording layer and process for its manufacture |
DE19732032A1 (en) * | 1997-07-25 | 1999-01-28 | Bayer Ag | White-tinted polymers and their use in coating slips for coating substrates |
DE19732860A1 (en) * | 1997-07-30 | 1999-02-04 | Merck Patent Gmbh | Laser-markable papers and cardboard |
FI103801B (en) | 1998-02-24 | 1999-09-30 | Kemira Oyj | Method for bleaching pigments |
RU2254405C2 (en) | 1999-08-05 | 2005-06-20 | Циба Спешиалти Кемикалз Холдинг Инк. | Using whitening pigments in compositions for coating paper cover |
AU2006336948A1 (en) * | 2006-01-26 | 2007-08-02 | Clariant Finance (Bvi) Limited | Process for producing optically brightened paper |
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US3625952A (en) * | 1967-01-20 | 1971-12-07 | Farlenfabriken Bayer Ag | 7-triazolyl-3-phenyl-coumarins |
DE1670999C3 (en) * | 1968-03-16 | 1979-03-15 | Bayer Ag, 5090 Leverkusen | Triazolyl coumarins |
CH527874A (en) * | 1969-06-13 | 1972-09-15 | Ciba Geigy Ag | Arylvinyl-v-triazole for optical blueing |
US4055565A (en) * | 1969-12-30 | 1977-10-25 | Sumitomo Chemical Company, Limited | Optical brightening agents of naphthalimide derivatives |
US3684764A (en) * | 1970-04-13 | 1972-08-15 | Bennett George Buell | Brightening polyvinyl chloride and polyolefin plastics with 2-naphthylnaphthoxazoles |
GB1294173A (en) | 1970-06-02 | 1972-10-25 | Ici Ltd | Coating compositions |
GB1349934A (en) | 1970-08-13 | 1974-04-10 | Ici Ltd | Coating process |
CH1917171A4 (en) * | 1971-12-30 | 1975-04-30 | ||
GB1399632A (en) | 1972-07-13 | 1975-07-02 | Leo Pharm Prod Ltd | Sulphamoyl-benzoic acids |
US3926963A (en) * | 1973-04-20 | 1975-12-16 | Ciba Geigy Ag | New benzoxazolylstilbenes as optical brighteners |
LU76819A1 (en) * | 1977-02-22 | 1978-10-18 | ||
DE2902470A1 (en) * | 1979-01-23 | 1980-07-31 | Bayer Ag | CUMARIN CONNECTIONS |
DE2935638A1 (en) * | 1979-09-04 | 1981-03-12 | Hoechst Ag, 6000 Frankfurt | DISAZO COMPOUNDS, METHOD FOR THEIR PRODUCTION AND THEIR USE AS A COLORANT. |
US4386965A (en) | 1980-07-03 | 1983-06-07 | Ciba-Geigy Corporation | Process for obtaining coating compositions of improved whiteness |
JPS5725364A (en) * | 1980-07-22 | 1982-02-10 | Showa Kagaku Kogyo Kk | Dyestuff salt |
DE3112435A1 (en) | 1981-03-28 | 1982-10-07 | Bayer Ag, 5090 Leverkusen | AQUEOUS AMINOPLAST DISPERSIONS |
DE3136809A1 (en) * | 1981-09-16 | 1983-03-31 | Bayer Ag, 5090 Leverkusen | OPTICAL BRIGHTNING PREPARATIONS |
JPS5875151A (en) * | 1981-10-29 | 1983-05-06 | Fuji Photo Film Co Ltd | Manufacture of resin coated paper for photographic printing paper |
DE3502038A1 (en) | 1985-01-23 | 1986-07-24 | Sandoz-Patent-GmbH, 7850 Lörrach | AQUEOUS BRIGHTENING DEVICES AND THEIR USE IN THE PAPER LINE |
JPH0610739B2 (en) * | 1985-04-12 | 1994-02-09 | 富士写真フイルム株式会社 | Support for photographic printing paper and manufacturing method thereof |
JPH0618926B2 (en) * | 1985-05-02 | 1994-03-16 | 住友化学工業株式会社 | UV absorber |
US4609591A (en) * | 1985-05-10 | 1986-09-02 | Owens-Corning Fiberglas Corporation | Non-aqueous coating for glass fibers and glass fibers coated therewith |
DE3627859A1 (en) * | 1986-08-16 | 1988-02-25 | Schoeller F Jun Gmbh Co Kg | PHOTOGRAPHIC PAPER CARRIER WITH A WATERPROOF COATING FROM A POLYOLEFIN |
DE3643215A1 (en) | 1986-12-18 | 1988-06-30 | Bayer Ag | WHITE-TONED PAPER COATINGS |
JPH02106397A (en) * | 1988-10-14 | 1990-04-18 | Fuji Photo Film Co Ltd | Thermal transfer image receiving material |
US5213888A (en) * | 1988-10-20 | 1993-05-25 | Mitsubishi Paper Mills Limited | Alkyl-substituted 2,2'-(1,4-naphthalenediyl)dibenzoxazole and photographic support comprising the same |
US5106989A (en) * | 1988-10-20 | 1992-04-21 | Mitsubishi Paper Mills Limited | Alkyl-substituted 2,2'-(1,4-naphthalenediyl)dibenzoxazole and photographic support comprising the same |
NO903004L (en) | 1989-07-21 | 1991-01-22 | Bayer Ag | PROCEDURE FOR WHITENING OF PAPER COATING MATERIALS AND WHITENING PREPARATIONS FOR THE PROCEDURE. |
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US5317048A (en) * | 1992-09-30 | 1994-05-31 | Great Lakes Chemical Corporation | Ultra white N,N'-ethylene-bis(tetrabromophthalimide) and its production in acetic acid |
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-
1995
- 1995-01-05 DE DE19500195A patent/DE19500195A1/en not_active Withdrawn
- 1995-12-27 AT AT95943210T patent/ATE208843T1/en not_active IP Right Cessation
- 1995-12-27 JP JP8520717A patent/JPH10512626A/en active Pending
- 1995-12-27 DE DE59509850T patent/DE59509850D1/en not_active Expired - Fee Related
- 1995-12-27 WO PCT/EP1995/005133 patent/WO1996021062A1/en active IP Right Grant
- 1995-12-27 EP EP95943210A patent/EP0801700B1/en not_active Expired - Lifetime
- 1995-12-27 US US08/860,503 patent/US6387296B1/en not_active Expired - Fee Related
-
1997
- 1997-07-03 FI FI972850A patent/FI972850A/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9621062A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6387296B1 (en) | 2002-05-14 |
FI972850A0 (en) | 1997-07-03 |
DE19500195A1 (en) | 1996-07-11 |
FI972850A (en) | 1997-07-03 |
JPH10512626A (en) | 1998-12-02 |
WO1996021062A1 (en) | 1996-07-11 |
DE59509850D1 (en) | 2001-12-20 |
ATE208843T1 (en) | 2001-11-15 |
EP0801700B1 (en) | 2001-11-14 |
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