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Dispersed copolymer of organic boron composite crosslinking agent and cationic polymer, preparation method and application thereof, and papermaking method

A technology of cationic polymer and composite cross-linking agent, applied in the field of papermaking, can solve the problems of unstable performance of retention and drainage aids, low wet tensile index of paper, and large environmental pollution, so as to improve retention and drainage. performance, improving wet tensile index, and the effect of simple preparation process

Active Publication Date: 2018-03-13
ZHEJIANG HENGDA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the performance of the existing retention aids and drainage aids is unstable, the wet tensile index of the paper is small, the cost is high, and the environmental pollution is large, which cannot meet the requirements of the existing papermaking process.

Method used

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  • Dispersed copolymer of organic boron composite crosslinking agent and cationic polymer, preparation method and application thereof, and papermaking method

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preparation example Construction

[0042] The preparation method of the step b) organic boron composite cross-linking agent is as follows: add a solvent and an organic alcohol complexing agent into the reactor, then add a boron compound, and react at 80° C. for 3 to 5 hours by a one-pot method to obtain a transparent A viscous solution is obtained to obtain an organoboron solution; then a certain amount of polyvinyl alcohol is added to react for 1 hour to obtain an organoboron composite crosslinking agent.

[0043]In the step c), the first monomer is any one of diallylamine, triallylamine, N-methyldiallylamine or a mixture of two or more mixed in any ratio; the second The monomer is diallyl dimethyl ammonium chloride; the initiator is any one of ammonium persulfate-sodium bisulfite, sodium persulfate-sodium sulfite or potassium persulfate-sodium sulfite or a mixture of two or more in any ratio Mixture; pH regulator is glacial acetic acid.

[0044] The preparation method of the cationic polymer in the step c) i...

Embodiment 1

[0048] In the cellulose pulp, add 1% (based on the quality of the dry fiber) of the reinforcing agent PAE and 0.1% (based on the quality of the reinforcing agent) of the filler coagulant polyacrylamide. Add 0.5% (based on the quality of dry fiber) of organic boron composite cross-linking agent into the slurry, wherein the organic boron composite cross-linking agent is polymerized from the following raw materials: 15 parts of sodium tetraborate, 60 parts of organic alcohol coordination Agent ethylene glycol, 25 parts of solvent glycerin, 1 part of polyvinyl alcohol. Then, 0.25% (based on the quality of the dry fiber) of cationic polymer is added to the slurry, wherein the cationic polymer is polymerized from the following monomers: 50 parts of the first monomer diallylamine, 10 parts of the second monomer Two monomer diallyl dimethyl ammonium chloride, 3 parts of pH adjuster, 0.01 part of initiator ammonium persulfate-sodium bisulfite, 30 parts of deionized water. Finally, the...

Embodiment 2

[0052] In the cellulose pulp, add 1% (based on the quality of the dry fiber) of the reinforcing agent PAE and 0.1% (based on the quality of the reinforcing agent) of the filler coagulant polyacrylamide. 3% (based on the quality of the dry fiber) of the organic boron composite crosslinking agent is added to the slurry, wherein the organic boron composite crosslinking agent is polymerized from the following raw materials: 25 parts of sodium tetraborate, 50 parts of organic alcohol coordination Agent ethylene glycol, 25 parts of solvent glycerin, 3 parts of polyvinyl alcohol. Then, 2% (based on the mass of dry fiber) cationic polymer is added to the slurry, wherein the cationic polymer is polymerized from the following monomers: 20 parts of the first monomer diallylamine, 40 parts of the second monomer Two monomer diallyl dimethyl ammonium chloride, 2.5 parts of pH adjuster, 0.01 part of initiator ammonium persulfate-sodium bisulfite, 40 parts of deionized water. Finally, the pu...

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Abstract

The invention discloses a dispersed copolymer of organic boron composite crosslinking agent and cationic polymer, and a preparation method of the dispersed copolymer and an application of the dispersed copolymer, a papermaking method. The papermaking method forms a water-containing fiber sizing agent, composite crosslinking agent and effective quantity of cationic polymer are added in the sizing agent; the sizing agent is pressed to be paper piece and dried. The composite crosslinking agent is organic boron composite crosslinking agent; the cationic polymer is preferentially selected from macromolecular copolymer of diallyl dimethyl dimethyl and diallyl amine. The cationic polymer is featured by poison free, safe and high adhering force; the dispersed copolymer can improve the wet strength of papers and improve the water-resisting property of papers; moreover, the product has simple preparation technique and low production cost.

Description

【Technical field】 [0001] The invention relates to the field of papermaking, in particular to a dispersed copolymer of an organic boron composite crosslinking agent and a cationic polymer, a preparation method and application thereof, and a papermaking method. 【Background technique】 [0002] An aspect of great importance to the efficiency and cost of papermaking production is furnish retention. Paper furnishes contain cellulose ranging in size from about 2-3 mm to filler particles only a few microns in size. Included in this range are cellulose crumbs, mineral fillers (used to increase haze, brightness and other paper properties) and other small particles, usually excluding one or more retention aids, which can penetrate through the interstices (pores) between the cellulose in the fiberboard being formed. [0003] However, the performance of the existing retention aids and filter aids is unstable, the wet tensile index of the paper is small, the cost is high, and the enviro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H21/10C08F226/04C08F226/02
CPCC08F226/02C08F226/04D21H21/10
Inventor 赵新民伊财富丁九斤江利黄超吴小军
Owner ZHEJIANG HENGDA NEW MATERIAL CO LTD
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