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A kind of preparation method of paper feel agent

A hand feeling agent, paper technology, applied in paper, papermaking, textiles and papermaking, etc., can solve the problem of not being developed and applied in a large number, and achieve the effects of rapid response and difficult control, increased toughness and stiffness, and safe and environmentally friendly raw materials.

Active Publication Date: 2018-09-25
GUANGDONG PAPER IND RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, multi-functional hand feeling agents in papermaking have not been developed and applied in large quantities.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In a four-neck flask, add 400.0g of distilled water, start stirring, then add 40.0g of acrylamide, 16.2g of N-methylolacrylamide, 11.4.0g of glycidyl methacrylate, N,N-methylene bis Acrylamide 1.3g and isopropanol 0.96g, followed by nitrogen protection, and an initiator and a catalyst were added, then the reaction temperature was raised to 75°C, and the polymerization reaction was carried out for 60min to obtain a polyacrylamide copolymer.

[0027] Add 24.8g of dimethylamine with a mass concentration of 40% to the above polyacrylamide copolymer, carry out the amine methylation condensation reaction at 75°C for 80min, and then stop the reaction; when the product is cooled below 50°C, add hydrochloric acid to adjust the polymer solution pH6~9.

Embodiment 2

[0029] In a four-neck flask, add 400.0g of distilled water, start stirring, then add 40.0g of acrylamide, 18.2g of N-methylolacrylamide, 11.4.0g of glycidyl methacrylate, N,N-methylene bis Acrylamide 1.3g and isopropanol 0.90g, followed by nitrogen protection, and an initiator and a catalyst were added, then the reaction temperature was raised to 80°C, and the polymerization reaction was carried out for 60min to obtain a polyacrylamide copolymer.

[0030] Add 14.6g of diethylamine to the above polyacrylamide copolymer, carry out amine methylation condensation reaction at 80°C for 70min, and then stop the reaction; after the product is cooled below 50°C, add sulfuric acid to adjust the pH of the polymer solution to 6-9.

Embodiment 3

[0032] In a four-neck flask, add 400.0g of distilled water, start stirring, then add 40.0g of acrylamide, 16.2g of N-methylolacrylamide, 14.2g of glycidyl methacrylate, N,N-methylenebisacryl Amide 1.3g and mercaptoethanol 1.25g, followed by nitrogen protection, and the initiator and catalyst were added, then the reaction temperature was raised to 80°C, and the polymerization reaction was carried out for 80min to obtain a polyacrylamide copolymer.

[0033] Add 20.2g of dipropylamine to the above polyacrylamide copolymer, carry out amine methylation condensation reaction at 85°C for 80min, and then stop the reaction; after the product is cooled below 50°C, add sulfuric acid to adjust the pH of the polymer solution to 6-9.

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Abstract

A preparation method of a paper handle agent comprises: (1) taking, by molar percentage, 70-80% of acrylamide, 20-30% of N-methylolacrylamide, 8-15% of glycidyl methacrylate, 0.01-5% of a crosslinking agent and 0.05-5% of a chain transfer agent, and adding them in water while stirring to obtain mixed aqueous solution; introducing nitrogen, adding an initiator and a catalyst, heating to 60-90 DEG C, and polymerizing for 30-90 min to obtain polyacrylamide copolymer; (2) adding suitable organic amine in the product of step (1), carrying out aminomethylation condensation at 60-90 DEG C; cooling the reaction product to 50 DEG C and below, and adding an acid to adjust pH of polymer solution to 6-9; the paper handle agent has the advantages that by adding the handle agent into pulp, finished paper is better in toughness and stiffness and has improved bulkiness and texture.

Description

technical field [0001] The invention belongs to the technical field of papermaking auxiliary agents, and in particular relates to a preparation method of a paper feel agent. Background technique [0002] In recent years, the production and consumption of paper has continued to grow by leaps and bounds. In order to improve production efficiency, the shortage of raw materials and environmental protection requirements, the process of high-speed paper machines and the trend of low-quantity products are strengthened. At the same time, the use of secondary fibers in paper production affects the papermaking and paper quality to a certain extent. . With the improvement of papermaking technology and living standards, consumers have higher and higher requirements for the quality of household paper. In addition to the general quality indicators such as wet and dry strength, water absorption, uniformity, softness and whiteness of paper, there are high requirements. In addition to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F220/58C08F220/32C08F222/38C08F8/44C08F8/32D21H17/37D21H21/14
CPCC08F8/44C08F220/56D21H17/375D21H21/14C08F8/32C08F220/58C08F220/325C08F222/385
Inventor 许桂红刘晴杨桂珍戴尚志
Owner GUANGDONG PAPER IND RES INST
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