CN103044629A - Preparation method of acrylamide cross-linked urea glyoxal resin wet strength agent - Google Patents
Preparation method of acrylamide cross-linked urea glyoxal resin wet strength agent Download PDFInfo
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- CN103044629A CN103044629A CN2012105921988A CN201210592198A CN103044629A CN 103044629 A CN103044629 A CN 103044629A CN 2012105921988 A CN2012105921988 A CN 2012105921988A CN 201210592198 A CN201210592198 A CN 201210592198A CN 103044629 A CN103044629 A CN 103044629A
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- urea
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- glyoxal
- strength agent
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- 229920005989 resin Polymers 0.000 title claims abstract description 59
- 239000011347 resin Substances 0.000 title claims abstract description 59
- ZQUAGYUZGXDEIA-UHFFFAOYSA-N oxaldehyde;urea Chemical compound NC(N)=O.O=CC=O ZQUAGYUZGXDEIA-UHFFFAOYSA-N 0.000 title claims abstract description 29
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000000178 monomer Substances 0.000 claims abstract description 37
- 239000004202 carbamide Substances 0.000 claims abstract description 26
- 238000004132 cross linking Methods 0.000 claims abstract description 25
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920001807 Urea-formaldehyde Polymers 0.000 claims abstract description 10
- 229940015043 glyoxal Drugs 0.000 claims abstract description 9
- 239000003513 alkali Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000008367 deionised water Substances 0.000 claims abstract description 6
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 6
- 230000007935 neutral effect Effects 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 18
- 125000002091 cationic group Chemical group 0.000 claims description 17
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical group OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 6
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 claims description 5
- SBVKVAIECGDBTC-UHFFFAOYSA-N 4-hydroxy-2-methylidenebutanamide Chemical compound NC(=O)C(=C)CCO SBVKVAIECGDBTC-UHFFFAOYSA-N 0.000 claims description 5
- -1 ethylene dialdehyde Aldehyde Chemical class 0.000 claims description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- DPBJAVGHACCNRL-UHFFFAOYSA-N 2-(dimethylamino)ethyl prop-2-enoate Chemical compound CN(C)CCOC(=O)C=C DPBJAVGHACCNRL-UHFFFAOYSA-N 0.000 claims 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 claims description 3
- 235000019253 formic acid Nutrition 0.000 claims description 3
- GQOKIYDTHHZSCJ-UHFFFAOYSA-M dimethyl-bis(prop-2-enyl)azanium;chloride Chemical group [Cl-].C=CC[N+](C)(C)CC=C GQOKIYDTHHZSCJ-UHFFFAOYSA-M 0.000 claims description 2
- 239000005977 Ethylene Substances 0.000 claims 1
- NXWHLJUNAXIUEA-UHFFFAOYSA-N azane;ethyl 2-methylprop-2-enoate Chemical compound N.CCOC(=O)C(C)=C NXWHLJUNAXIUEA-UHFFFAOYSA-N 0.000 claims 1
- KXHPPCXNWTUNSB-UHFFFAOYSA-M benzyl(trimethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CC1=CC=CC=C1 KXHPPCXNWTUNSB-UHFFFAOYSA-M 0.000 claims 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 7
- 238000010790 dilution Methods 0.000 abstract description 5
- 239000012895 dilution Substances 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 3
- 150000001768 cations Chemical class 0.000 abstract 2
- 150000004820 halides Chemical class 0.000 abstract 1
- ZNZYKNKBJPZETN-WELNAUFTSA-N Dialdehyde 11678 Chemical compound N1C2=CC=CC=C2C2=C1[C@H](C[C@H](/C(=C/O)C(=O)OC)[C@@H](C=C)C=O)NCC2 ZNZYKNKBJPZETN-WELNAUFTSA-N 0.000 description 25
- 238000003756 stirring Methods 0.000 description 8
- 239000002994 raw material Substances 0.000 description 7
- 238000010792 warming Methods 0.000 description 7
- RMQLWXQTAOCGHL-UHFFFAOYSA-N n-ethoxy-n-methylprop-2-enamide Chemical compound CCON(C)C(=O)C=C RMQLWXQTAOCGHL-UHFFFAOYSA-N 0.000 description 6
- 238000006068 polycondensation reaction Methods 0.000 description 6
- RGSMDLROAMCLFQ-UHFFFAOYSA-N acetaldehyde;urea Chemical compound CC=O.NC(N)=O RGSMDLROAMCLFQ-UHFFFAOYSA-N 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 4
- GSQZCNGOIFGRPU-UHFFFAOYSA-M [Cl-].C(C=C)(=O)C(C1=CC=CC=C1)([N+](C)(C)C)CC Chemical compound [Cl-].C(C=C)(=O)C(C1=CC=CC=C1)([N+](C)(C)C)CC GSQZCNGOIFGRPU-UHFFFAOYSA-M 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 229950003988 decil Drugs 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 150000002896 organic halogen compounds Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 150000001408 amides Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 125000000022 2-aminoethyl group Chemical group [H]C([*])([H])C([H])([H])N([H])[H] 0.000 description 1
- BONVROUPOZRCDU-UHFFFAOYSA-N 2-hydroxyprop-2-enamide Chemical class NC(=O)C(O)=C BONVROUPOZRCDU-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- BPOFERVZWUJYOW-UHFFFAOYSA-N [Cl-].[NH4+].CC(=CC)C Chemical compound [Cl-].[NH4+].CC(=CC)C BPOFERVZWUJYOW-UHFFFAOYSA-N 0.000 description 1
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- PYGSKMBEVAICCR-UHFFFAOYSA-N hexa-1,5-diene Chemical group C=CCCC=C PYGSKMBEVAICCR-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- UEYXQLWQLHKTFT-UHFFFAOYSA-N oxaldehyde;prop-2-enamide Chemical compound O=CC=O.NC(=O)C=C UEYXQLWQLHKTFT-UHFFFAOYSA-N 0.000 description 1
- FSUXYWPILZJGCC-UHFFFAOYSA-N pent-3-en-1-ol Chemical group CC=CCCO FSUXYWPILZJGCC-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- PYNUOAIJIQGACY-UHFFFAOYSA-N propylazanium;chloride Chemical class Cl.CCCN PYNUOAIJIQGACY-UHFFFAOYSA-N 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
Landscapes
- Phenolic Resins Or Amino Resins (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Paper (AREA)
Abstract
The invention relates to a preparation method of acrylamide cross-linked urea glyoxal resin wet strength agent. The preparation method is characterized by comprising the following steps: mixing glyoxal and urea as per mole ratio of 1 to 2: 0.3 to 1, regulating pH value to be 1.5 to 3 with acid, reacting for 2.5 to 6 h under the temperature of 35 DEG C to 75 DEG C, cooling, regulating pH value to be neutral with alkali after adding the glyoxal with the adding amount of moles of 15% to 40 % of first glyoxal weight, reacting for 1 to 2 h under the temperature of 20 DEG C to 35 DEG C, regulating pH value to be neutral so as to obtain urea resin, adding cross-linking monomers and cation monomers into the urea resin (the mole ratio of the cross-linking monomers, the cation monomers and the urea is 0.5 to 3.5:0.2 to 2:5, reacting for 1 to 2 h under the temperature of 50 DEG C to 80 DEG C, and adding deionized water for dilution until the solid content occupies 12% of total content so as to obtain acrylamide cross-linked urea glyoxal resin wet strength agent. The invention has the benefits that formaldehyde and organic halide are not added during preparation process, so that damage to environment and human health is eliminated.
Description
Technical field
The invention belongs to wet strength agent for paper making, relate in particular to the preparation method of the crosslinked urea glyoxal resin of a kind of acrylamide Wet Strength Resin.
Background technology
Fast development along with paper industry, traditional Wet Strength Resin that paper-making industry is used, such as urea-formaldehyde resin (UF) and terpolycyantoamino-formaldehyde resin (MF) etc., owing to reasons such as working conditions and release objectionable impuritiess (A0X), more and more can not satisfy user's demand.
PAE uses more wet strength agent for paper making at present, its performance is subject to general approval, become the main product of Wet Strength Resin, but be subject to the impact of reaction conditions during from preparation technology, high such as the production temperature, the time is long, volatility of raw material is serious, the raw material ratio reaction is on the low side in theoretical reacting value etc., easily cause in the polycondensation process end group end-blocking too early, make polymericular weight on the low side, affected result of use, bring many detrimentally affects to papermaking, gather, become paper, take off the paper difficulty such as the easy generation of poly-material bubble, wadding, the paper uniformity coefficient is poor etc.More crucial problem is to use at present more PAE Wet Strength Resin to be not suitable for simultaneously, and United Nations's health organization has been worked out requirement, does not allow to use the industrial chemicals that contains organic halogenide (AOX) to paper product in 2015.
Summary of the invention
The object of the invention is to overcome the deficiency of above-mentioned technology, the preparation method of the crosslinked urea second of a kind of acrylamide glyoxal resin Wet Strength Resin is provided, and the Wet Strength Resin of this technique manufacturing has high retention rate performance in slurry, and not only wet tenacity is high, and environmentally safe does not contain organic halogenide.
The present invention for achieving the above object, by the following technical solutions: the preparation method of the crosslinked urea glyoxal resin of a kind of acrylamide Wet Strength Resin, it is characterized in that, comprise the steps,
1) preparation urea-formaldehyde resin
Be that 1-2:0.3-1 is miscible with the mol ratio of oxalic dialdehyde and urea, pH value 1.5-3 with acid-conditioning solution, temperature is 35 ℃-75 ℃, reacts 2.5-6h, cooling, add again oxalic dialdehyde, add-on for oxalic dialdehyde first the 12%-15% mole number, be neutral with the pH value of alkali regulator solution, under 20-35 ℃ of temperature, react 1-2h, pH value with the alkali regulator solution is neutral again, namely obtains urea-formaldehyde resin;
2) with cross-linking monomer, cationic monomer adds in the urea-formaldehyde resin of step 1) preparation, cross-linking monomer, the mol ratio 0.5-3.5:0.2-2:5 of cationic monomer and urea, at temperature 50 C-80 ℃, reaction 1-2h stops, and adds the deionized water dilution, wherein all admittedly containing thing accounts for 12% of whole aqueous solution total amount, can obtain the crosslinked urea glyoxal resin of acrylamide Wet Strength Resin.
Described acid is one or both in hydrochloric acid, sulfuric acid, formic acid, the acetic acid.
Described alkali is one or both in potassium hydroxide, sodium hydroxide, the calcium hydroxide.
Described cross-linking monomer is one or both in n-methylolacrylamide, hydroxyethyl acrylamide, ethoxyl methyl acrylamide, the methacrylic acid ammonium ethyl ester.
Described cationic monomer is one or both in dimethyl diallyl ammonium chloride, acryloyl ethyl-trimethyl benzyl ammonium chloride, dimethylaminoethyl methacrylate, the vinylformic acid dimethylamine ethyl ester.
Beneficial effect: preparation process of the present invention is not added and is contained formaldehyde and Organohalogen compounds (AOX), has eliminated the source that HUMAN HEALTH is worked the mischief.Urea glyoxal resin after cross-linking modified with acrylic amide cross-linking monomer and cationic monomer, increased molecular weight product, improved the performance of modified urea glyoxal resin, thereby improved humidity usefulness, the adding of acrylic amide and cationic monomer increases the crosslinking activity of molecule segment, has strengthened between the polymkeric substance formed reticulated structure around fiber, can limit better the activity between the fiber, the profit of prevention fiber rises and absorbs water, and it is retractable to reduce paper.Simultaneously the hydroxyl of Wet Strength Resin resin and adjacent fiber can form the wet tenacity that multichain key (covalent linkage and hydrogen bond etc.) more can greatly improve paper.
Technique of the present invention is simple, starting material are cheap and easy to get, temperature of reaction is low, the volatility of raw material loss is few, added cationic monomer in the technique, high with the electric density of cross-linking monomer polymkeric substance, molecular weight great achievement reticulated structure, paper adsorption enhancing after using improves paper retention and wet tenacity significantly.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with preferred embodiment.Comprise following component, in molar ratio,
Embodiment 1
The present embodiment wet strength agent for paper making, by cross-linking monomer n-methylolacrylamide and cationic monomer dimethyl propylene ammonium chloride, modified urea glyoxal resin, its molecular chain has three-dimensional net structure, wherein glyoxal resin is that oxalic dialdehyde gets the crosslinked urea glyoxal resin of acrylamide Wet Strength Resin with cross-linking monomer n-methylolacrylamide and cationic monomer methyl diallyl sodium-chlor crosslinking polymerization with urea again through the synthetic urea glyoxal resin of polycondensation.
The present embodiment wet strength agent for paper making be take oxalic dialdehyde, urea, n-methylolacrylamide, dimethyl two olefine aldehydr propyl ammonium chlorides undertakies by comprising following key step as main raw material.
Pressing oxalic dialdehyde and urea mol ratio 2:1 adds in the reactor, be 2 with hydrochloric acid conditioning solution pH value, be warmed up to 65 ℃ of reaction 3h under stirring, cool to 30 ℃, add again oxalic dialdehyde, add-on for oxalic dialdehyde first 15% mole number, regulating regulator solution pH value with potassium hydroxide is 7, reaction 1.5h, regulating regulator solution pH value with potassium hydroxide more thereafter is 7, stirs the lower n-methylolacrylamide that adds, dimethyl diallyl is 0.5:0.2:5 by the mol ratio of urea, be warming up to 70 ℃ of reaction 1.5h, reaction terminating adds the deionized water dilution, and wherein all admittedly containing thing accounts for 12% of whole aqueous solution total amount.Can obtain the crosslinked urea glyoxal resin of acrylamide Wet Strength Resin.
Embodiment 2
The present embodiment wet strength agent for paper making, by cross-linking monomer hydroxyethyl acrylamide and cationic monomer acryloyl ethyl-trimethyl benzyl ammonium chloride, modified urea glyoxal resin, its molecular chain has three-dimensional net structure, wherein glyoxal resin is that oxalic dialdehyde gets the crosslinked urea glyoxal resin of acrylamide Wet Strength Resin with hydroxyethyl propylene cross-linking monomer acid amides and cationic monomer acryloyl ethyl-trimethyl benzyl ammonium chloride, crosslinking polymerization with urea again through polycondensation and the synthetic urea glyoxal resin of reaction.
The present embodiment wet strength agent for paper making be take oxalic dialdehyde, urea, hydroxyethyl acrylamide, acryloyl ethyl-trimethyl benzyl ammonium chloride is as main raw material, undertaken by comprising following key step.
Press oxalic dialdehyde and urea 1:0.3 mol ratio and add reactor, regulate regulator solution pH value 2 with sulfuric acid, be warming up to 70 ℃ of reaction 2.5h under stirring, cool to 25 ℃, add again oxalic dialdehyde, add-on for oxalic dialdehyde first 12% mole number, regulating regulator solution pH value with sodium hydroxide is 7, reaction 1h, regulating regulator solution pH value with sodium hydroxide again is 7, stirs lower add hydroxyethyl acrylamide and acryloyl ethyl-trimethyl benzyl ammonia chloride, be 3.5:2:5 by urea mol ratio, be warming up to 70 ℃ of reaction 1h and stop, add the deionized water dilution, wherein all admittedly containing thing accounts for 12% of whole aqueous solution total amount.Namely obtain the uncommon crosslinked urea glyoxal resin of the acid amides Wet Strength Resin of acyl.
Embodiment 3
Present embodiment is by crosslinked dioxy ylmethyl acrylamide and positively charged ion dimethylaminoethyl methacrylate, modified urea glyoxal resin, its molecular chain has three-dimensional network-like structure, wherein the urea acetaldehyde resin is that oxalic dialdehyde gets the crosslinked urea glyoxal resin of acrylamide Wet Strength Resin with cross-linking monomer ethoxyl methyl acrylamide, cationic monomer dimethylaminoethyl acrylate methyl amine second fat, crosslinking polymerization with urea again through the synthetic urea acetaldehyde resin of polycondensation.
The present embodiment wet strength agent for paper making, be with oxalic dialdehyde, urea, ethoxyl methyl acrylamide, dimethylaminoethyl methacrylate, modified urea glyoxal resin, its molecular chain has three-dimensional network-like structure, wherein the urea acetaldehyde resin be oxalic dialdehyde with urea through the synthetic urea glyoxal resin of polycondensation again with ethoxyl methyl acrylamide cross-linking monomer, cationic monomer dimethylaminoethyl acrylate methyl amine second fat, crosslinking polymerization and getting.
Present embodiment be with oxalic dialdehyde, urea, ethoxyl methyl acrylamide, dimethylaminoethyl methacrylate, be main raw material, following key step is carried out.
Press oxalic dialdehyde and urea 2:1 mol ratio and add reactor, regulate regulator solution pH value 2 with formic acid, be warming up to 70 ℃ under stirring, reaction 2.5h, cooling, be cooled to 30 ℃ and add again oxalic dialdehyde, its add-on for oxalic dialdehyde first 15% mole number, regulating regulator solution pH value with calcium hydroxide is 7, reacts 1.5 hours, and regulating regulator solution pH value with calcium hydroxide again is 7, stir lower add ethoxyl methyl acrylamide and dimethylaminoethyl methacrylate, be 1.6:0.4:5.0 by urea mol ratio, be warming up to 70 ℃, reaction 1.5h stops, add the deionized water dilution, wherein all admittedly containing thing accounts for 12% of whole aqueous solution total amount.Namely obtain the crosslinked urea glyoxal resin of acrylamide Wet Strength Resin.
Embodiment 4:
The present embodiment wet strength agent for paper making is by cross-linking monomer methacrylic acid amino ethyl ester and cationic monomer vinylformic acid dimethylamine ethyl ester, modified urea second glyoxal resin, its molecular chain has three-dimensional network-like structure, wherein the urea acetaldehyde resin is the urea glyoxal resin that oxalic dialdehyde synthesizes through polycondensation with urea, again with cross-linking monomer methacrylic acid amino ethyl ester, cationic monomer vinylformic acid decil fat crosslinking polymerization and, the crosslinked urea glyoxal resin of acrylamide Wet Strength Resin.
The present embodiment wet strength agent for paper making, be take oxalic dialdehyde, the uncommon sour amino ethyl ester of urea, methyl acyl, vinylformic acid decil fat be as main raw material, undertaken by comprising following key step:
Press oxalic dialdehyde and urea 2:1 mol ratio and add reactor, regulate regulator solution pH value 3-4 with acetic acid, be warming up to 70 ℃ of reaction 2.5h under stirring, cool to 25 ℃, add again oxalic dialdehyde, its add-on for oxalic dialdehyde first 12% mole number, regulating regulator solution pH value with sodium hydroxide is 7 reactions 1.5 hours, be 7 with sodium hydroxide key joint pH again, stir lower methacrylic acid amino ethyl ester and the vinylformic acid decil fat of adding, press urea mol ratio 1.5:1.2:5.0, be warming up to 70 ℃ of reaction 1.5h termination, wherein all admittedly containing thing accounts for 12% of whole aqueous solution total amount, namely obtains the crosslinked urea acetaldehyde resin of acrylamide Wet Strength Resin.
The present invention is because adding environment and human body harmful's thing, so removed the various harm that nuisance and Organohalogen compounds (AOX) cause.Through the crosslinked product of hydroxyacrylamide class, its molecular weight greatly increases and reticulates structure, the electric density of molecule segment strengthens, adsorbing fiber ability and retention significantly promote, not only improved the page wet tenacity for this reason, and can increase the folding endurance of page, tensile strength is with physical and chemical performances such as dry strength.
The above only is preferred embodiment of the present invention, is not structure of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment does.
Claims (5)
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Cited By (5)
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| CN113045711A (en) * | 2021-04-15 | 2021-06-29 | 浙江九本环保技术有限公司 | Preparation method and application of emulsion type polyester block low-organochlorine wet strength agent |
| CN114085383A (en) * | 2021-12-27 | 2022-02-25 | 上海东升新材料有限公司 | High-solid-content wet strength agent and preparation method thereof |
| CN115160520A (en) * | 2022-08-03 | 2022-10-11 | 西南林业大学 | A kind of network hyperbranched amino copolycondensation resin and its preparation method and application |
| CN116856199A (en) * | 2023-06-30 | 2023-10-10 | 碳氢氧(天津)科技有限公司 | A chlorine-free wet strength agent for papermaking and its preparation method |
| CN117736390A (en) * | 2024-01-05 | 2024-03-22 | 西南林业大学 | N-methylolacrylamide-glyoxal-urea copolycondensation resin and preparation method and application thereof |
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| US4279959A (en) * | 1977-11-03 | 1981-07-21 | Rohm And Haas Company | Water-insoluble copolymers containing amide-polyaldehyde thermosettable system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113045711A (en) * | 2021-04-15 | 2021-06-29 | 浙江九本环保技术有限公司 | Preparation method and application of emulsion type polyester block low-organochlorine wet strength agent |
| CN114085383A (en) * | 2021-12-27 | 2022-02-25 | 上海东升新材料有限公司 | High-solid-content wet strength agent and preparation method thereof |
| CN115160520A (en) * | 2022-08-03 | 2022-10-11 | 西南林业大学 | A kind of network hyperbranched amino copolycondensation resin and its preparation method and application |
| CN115160520B (en) * | 2022-08-03 | 2023-07-04 | 西南林业大学 | Net-shaped hyperbranched amino copolycondensation resin and preparation method and application thereof |
| CN116856199A (en) * | 2023-06-30 | 2023-10-10 | 碳氢氧(天津)科技有限公司 | A chlorine-free wet strength agent for papermaking and its preparation method |
| CN117736390A (en) * | 2024-01-05 | 2024-03-22 | 西南林业大学 | N-methylolacrylamide-glyoxal-urea copolycondensation resin and preparation method and application thereof |
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