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Environmentally-friendly cationic polyacrylate, and preparation method and application thereof

A polyacrylate and cationic technology, applied in the direction of water repellent addition, etc., can solve the problems of poor stability of prepared coating liquid, poor ability to resist interference of impurity ions, low cost of sizing agent, etc., and achieve excellent sizing effect , Strong anti-interference ability of impurity ions, good sizing performance

Active Publication Date: 2014-08-20
HANGZHOU HANGHUA HARIMA PAPER CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the current sizing agent, the storage stability of the product and the stability of the prepared coating solution are not good, the anti-interference ability of impurity ions is poor, the foaming of the coating solution needs to be improved, and the surface sizing is due to the use of sulfuric acid The problem of environmental protection caused by aluminum, the present invention proposes an environment-friendly cationic polyacrylate and its preparation method and application. The sizing agent produced by the present invention has low cost, good stability, strong anti-interference ability of impurity ions, and Low foaming and high sizing performance, and at the same time realize sizing without aluminum sulfate, so it is an environmentally friendly product

Method used

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  • Environmentally-friendly cationic polyacrylate, and preparation method and application thereof
  • Environmentally-friendly cationic polyacrylate, and preparation method and application thereof
  • Environmentally-friendly cationic polyacrylate, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] (1) Synthesis of natural polymer emulsifier

[0080] Add 30 parts of amphoteric starch made from raw corn starch, 0.08 parts of natural polymer modifier, and 70 parts of water into a reaction kettle with a stirrer and a thermometer, raise the temperature to 90°C, and keep the temperature for 2 hours to obtain the natural polymer. Emulsifier A1.

[0081] (2) Preparation of environment-friendly cationic polyacrylate

[0082] Add 90 parts of the above-mentioned natural polymer emulsifier into a reaction kettle with a stirrer and a thermometer, raise the temperature to 85°C, stir evenly, and continuously dropwise add initiator A, that is, 35 parts of 5% hydrogen peroxide aqueous solution within 3.5 hours , 0.1 part of molecular weight regulator dodecanethiol and mixed monomers, the mixed monomers are composed of 30 parts of styrene as hard monomer, 15 parts of isobutyl methacrylate, 15 parts of butyl acrylate as soft monomer, cationic 3 parts of diallyl ammonium chloride ...

Embodiment 2～5

[0084] (1) Synthesis of natural polymer emulsifier

[0085] The natural polymer emulsifiers A2-A5 were prepared according to the synthesis step (1) of Example 1 by using different dosages of the natural polymer emulsifier components in Table 1.

Embodiment 1-5

[0086] The synthetic embodiment 1-5 component weight parts of table 1 natural macromolecule emulsifier

[0087]

[0088] (2) Preparation of environment-friendly cationic polyacrylate

[0089] Utilize the natural macromolecular emulsifier A1~A5 that embodiment 1~5 synthesizes, according to the preparation process of embodiment 1 (2) the preparation of environment-friendly cationic polyacrylate, adopt the preparation of each component of table 2 environment-friendly cationic polyacrylate parts by weight to prepare environment-friendly cationic polyacrylates B2-B5.

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Abstract

The invention relates to a paper surface conditioning agent, and provides an environmentally-friendly cationic polyacrylate, and a preparation method and an application thereof to solve the problems of poor product storage stability, poor stability of a prepared coating liquid, bad impurity ion interference resistance, insufficient foamability of the coating liquid, and environmental pollution due to the use of aluminum sulfate during surface sizing of present sizing agents. The environmentally-friendly cationic polyacrylate is prepared by using 5-100 parts of a natural polymer emulsifier, 1-55 parts of a hard monomer, 5-55 parts of a soft monomer, 0.1-15 parts of a cationic monomer, 0.1-10 parts of a stabilizer, 0.01-10 parts of an initiator, 0.01-10 parts of an initiator B, 0.01-10 parts of a molecular weight regulator, 0.01-20 parts of an antifoaming agent, and water, wherein water is added to make the solid content reach 25-30%. The above sizing agent produced in the invention has the advantages of low cost, good stability, strong impurity ion interference resistance, low foamability and high sizing performance, realizes sizing without aluminum sulfate, so the sizing agent is an environmentally friendly product.

Description

technical field [0001] The invention relates to a paper surface treatment agent, in particular to an environment-friendly cationic polyacrylate and its preparation method and application. Background technique [0002] Surface sizing agent is one of the surface treatment agents used in papermaking. It is a coating material that is coated on the surface of paper or cardboard to improve the water resistance of paper and improve the surface performance of paper. It is a new type of papermaking chemical. With the gradual improvement of people's awareness of environmental protection and the continuous development of printing technology and related paper industries, higher requirements are put forward for paper performance, especially surface performance. In the field of papermaking, the improvement of waste paper recycling rate, high pulp yield, and utilization of straw pulp have led to the deterioration of paper performance, so surface sizing is increasingly attracting the attent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/16
Inventor 吕建平吕英杰黄兴耀宁吕华汪曾祁
Owner HANGZHOU HANGHUA HARIMA PAPER CHEM
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