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Preparation method of paper handle agent

A hand feel agent and paper technology, which is applied in paper, papermaking, textiles and papermaking, etc., can solve the problems that have not been 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: 2017-01-11
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-necked flask, add 400.0g of distilled water, turn on the stirring, and then add 40.0g of acrylamide, 16.2g of N-methylolacrylamide, 11.4.0g of glycidyl methacrylate, N,N-methylene bis 1.3 g of acrylamide and 0.96 g of isopropanol, followed by nitrogen protection, and adding initiator and catalyst, then raising the reaction temperature to 75° C. and carrying out polymerization reaction for 60 minutes to obtain polyacrylamide copolymer.

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

Embodiment 2

[0029] In a four-neck flask, add 400.0g of distilled water, turn on the stirring, and then add 40.0g of acrylamide, 18.2g of N-methylolacrylamide, 11.4.0g of glycidyl methacrylate, N,N-methylene bis 1.3 g of acrylamide and 0.90 g of isopropanol, followed by nitrogen protection, and adding initiator and catalyst, and then raising the reaction temperature to 80° C. and performing polymerization reaction for 60 minutes to obtain a polyacrylamide copolymer.

[0030] In the above polyacrylamide copolymer, 14.6g of diethylamine was added, and the amine methylation condensation reaction was carried out at 80°C for 70 minutes, and then the reaction was stopped; after the product was cooled to below 50°C, sulfuric acid was added 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, turn on the stirring, then add 40.0g of acrylamide, 16.2g of N-methylolacrylamide, 14.2g of glycidyl methacrylate, and N,N-methylenebispropylene. 1.3 g of amide and 1.25 g of mercaptoethanol, followed by nitrogen protection, and adding initiators and catalysts, and then raising the reaction temperature to 80° C. and carrying out a polymerization reaction for 80 minutes to obtain a polyacrylamide copolymer.

[0033] In the above polyacrylamide copolymer, 20.2g of dipropylamine was added, and the amine methylation condensation reaction was carried out at 85°C for 80 minutes, and then the reaction was stopped; after the product was cooled to below 50°C, sulfuric acid was added to adjust the pH of the polymer solution to 6-9.

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PUM

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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 aids, and specifically relates to a preparation method of a paper feel agent. Background technique [0002] In recent years, the production and consumption of paper have continued to grow by leaps and bounds. In order to improve production efficiency, the shortage of raw materials and environmental protection requirements, the high-speed process of paper machines and the trend of low-quantity products have increased. At the same time, the use of secondary fibers in paper production will affect 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 requirements for the paper’s wet and dry strength, water absorption, uniformity, softness and whiteness, the general quality indicators are very high. In addition to the requirements,...

Claims

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Application Information

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Patent Type & Authority Applications(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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