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Cationoid esterified starch-grafted and modified acrylic resin paper waterproof agent and preparation method thereof

A technology of acrylic resin and esterified starch, applied in the direction of paper, water repellent addition, papermaking, etc., can solve the problems of insufficient paper strength and printing performance, reduce viscosity and retrogradation, improve retention rate, strong adhesion The effect of knot strength

Inactive Publication Date: 2017-11-24
ANHUI MEIJIA PRINTING
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AI Technical Summary

Problems solved by technology

[0004] In the article "Preparation and Properties of Hydrophobic Acrylic Resin" published by Chen Xianfei, Liu Yanjun and others, acrylic resin was prepared by emulsion polymerization with butyl acrylate, isooctyl acrylate and styrene as main monomers. The acrylic resin paper waterproofing agent is added to the inside of the paper through the method of pulp sizing, and the paper shows good waterproof performance, which can meet the requirements of special paper hydrophobic performance, but the strength and printing performance of the paper are insufficient

Method used

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Embodiment Construction

[0026] A cationic esterified starch grafted modified acrylic resin paper waterproofing agent, which is prepared by subjecting starch to acidolysis and oxidation treatment, and reacting with propionic anhydride to generate esterified starch, and then reacting with acrylic monomers, Cationic monomers are grafted and copolymerized to obtain cationic acrylic resin grafted modified esterified starch paper waterproofing agent.

[0027] Specific steps are as follows:

[0028] (1) Acid hydrolysis and oxidation treatment of starch:

[0029] Weigh the refined corn starch, disperse it in distilled water, and prepare a starch emulsion suspension with a concentration of 40%. After stirring evenly, place it in a water bath and heat it. When the system temperature reaches 50°C, add a certain amount of 0.5mol / L hydrochloric acid solution, stirred and reacted for 1.5 hours, then added 5% ammonium persulfate oxidant, neutralized to neutrality with saturated aqueous sodium carbonate solution, ...

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Abstract

The invention discloses a cationoid esterified starch-grafted and modified acrylic resin paper waterproof agent. A preparation method is characterized in that starch is subjected to acidolysis and oxidation treatment, then is subjected to an esterification reaction with propionic anhydride to prepare the esterified starch, then the esterified starch is subjected to graft copolymerization with an acrylic acid monomer and a cationic monomer to obtain the cationoid esterified starch-grafted and modified acrylic resin paper waterproof agent. The cationoid esterified starch-grafted and modified acrylic resin paper waterproof agent can realize a purpose of waterproof paper by internal sizing and surface sizing.

Description

technical field [0001] The invention belongs to the technical field of daily necessities, and in particular relates to a cationic esterified starch grafted modified acrylic resin paper waterproofing agent and a preparation method thereof. technical background [0002] With the continuous development of science and technology and the continuous improvement of people's living standards, paper has been endowed with various uses, such as navigation, construction and daily necessities industries, which need to have certain waterproof performance. In the past, waterproof paper materials were often used in The surface of the paper is coated with a layer of waterproof material, but due to the combination of the two interfaces, it is easy to separate and fall off, which not only affects the appearance, but also affects the use due to the damage of the waterproof layer. At the same time, it has poor air permeability, low hardness and toughness. Insufficient problem. [0003] The pape...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F220/18C08F212/08C08F230/08D21H21/16D21H17/29D21H17/37
CPCC08B31/04C08B31/185C08F251/00D21H17/29D21H17/37D21H21/16C08F220/1804
Inventor 熊守龙李琴陈勇陈涛程俊陈功鼎范晓光
Owner ANHUI MEIJIA PRINTING
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