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Efficient integrated AKD sizing reinforcing agent and preparation method thereof

A kind of enhancer, high-efficiency technology, applied in the direction of water repellent addition, material mixture addition, paper, etc., can solve the problems of high price, unfavorable industrial application, complicated preparation method of microcrystalline cellulose, etc., to achieve the effect of improving stability

Inactive Publication Date: 2019-10-11
上海镁锶钡实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The patent with the publication number CN 104499361 provides a method for preparing a nano-microcrystalline cellulose alkyl ketene dimer sizing agent, which avoids the use of surface sizing agents, and can be used for both surface sizing and The internal sizing of pulp improves the sizing degree of the paper industry, but the current preparation method of microcrystalline cellulose is relatively complicated and expensive, which is not conducive to its wide industrial application
Patent No. ZL201010281410.X discloses a method of emulsifying alkyl ketene dimer with chitosan and nano-titanium dioxide. The emulsification process is simple, the alkyl ketene dimer emulsion has high sizing efficiency and fast curing speed. , but the stability of emulsion droplet coalescence needs to be improved

Method used

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Examples

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preparation example Construction

[0031] The preparation method of the emulsifier is as follows: heating the mixture of dispersant and water to 80-90°C for 0.2-1 hour, then adding glacial acetic acid, and then adding styrene, acrylate, amide compounds, and cationic monomers in sequence , Initiator; after stirring for 70-90 minutes at 60-90 degrees Celsius, add aluminum compound, continue stirring for 60-120 minutes to obtain emulsifier.

[0032] The dispersant is selected from polymer cationic dispersants, octadecyl trimethyl ammonium chloride, cetyl triethyl ammonium chloride, sodium methylene dinaphthalene sulfonate, cetyl trimethyl At least one of ammonium chloride and dodecyldimethylbenzyl ammonium chloride.

[0033] As a preferred embodiment, the dispersant is a polymer cationic dispersant.

[0034] The preparation method of the polymeric cationic dispersant of the present invention is as follows: 10-20 parts of styrene, 1-6 parts of 4-vinylpyridine, 12-20 parts of acrylamide, 5-10 parts of methacryloxye...

Embodiment 1

[0075] An efficient integrated AKD sizing enhancer, in parts by weight, the raw materials include 120 parts of AKD wax, 360 parts of emulsifier, 3 parts of solubilizer, 3 parts of curing agent, 5 parts of stabilizer, 2 parts of catalyst, water 900 copies;

[0076] The AKD wax model is 1860.

[0077] The raw materials for the preparation of the emulsifier include the following components in parts by weight: 2 parts of polymer cationic dispersant, 300 parts of water, 10 parts of glacial acetic acid, 15 parts of styrene, 10 parts of butyl acrylate, and 15 parts of acrylamide , 5 parts of dimethyl diallyl ammonium chloride cationic monomer, 4 parts of aluminum sulfate, 5 parts of potassium persulfate.

[0078] The preparation method of the polymer cationic dispersant is as follows: 15 parts of styrene, 2 parts of 4-vinylpyridine, 15 parts of acrylamide, 6 parts of methacryloxyethyltrimethylammonium chloride, 4 parts of Potassium sulfate is added into the reaction kettle, reacted...

Embodiment 2

[0091] An efficient integrated AKD sizing enhancer, in parts by weight, the raw materials include 50 parts of AKD wax, 200 parts of emulsifier, 1 part of solubilizer, 2 parts of curing agent, 3 parts of stabilizer, 1 part of catalyst, water 600 copies;

[0092] The AKD wax model is 1860.

[0093] The specific components and preparation method of the emulsifier are the same as in Example 1.

[0094] The specific components and preparation method of the solubilizer are the same as in Example 1.

[0095] The curing agent is epichlorohydrin cross-linked cationic polyacrylamide.

[0096] The stabilizer is cationic starch, and the cationic starch is purchased from Chengdu Shanma Biotechnology Co., Ltd., and the model is SM-A.

[0097] The catalyst is a copper nano catalyst, the copper nano catalyst is purchased from Shenzhen Chuangzhi Chengtai Technology Co., Ltd., and the particle size of the copper nano is 30nm.

[0098] The preparation method of the AKD sizing enhancer is the...

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Abstract

The invention belongs to the technical field of papermaking chemistry, and particularly relates to an efficient integrated AKD sizing reinforcing agent and a preparation method thereof. The inventiondiscloses the efficient integrated AKD sizing reinforcing agent which comprises, by weight, 50-200 parts of AKD wax, 200-600 parts of an emulsifier, 1-6 parts of solubilizer, 2-7 parts of a curing agent, 3 -8 parts of a stabilizer, 1-5 parts of a catalyst and 600-1200 parts of water. The solubilizer comprises a polyoxyethylene-polyoxypropylene block copolymer.

Description

technical field [0001] The invention belongs to the technical field of papermaking chemistry, and in particular relates to a high-efficiency integrated AKD sizing enhancer and a preparation method thereof. Background technique [0002] Alkyl ketene dimer (AKD) and alkenyl succinic anhydride (ASA) are commonly used sizing agents. Alkyl ketene dimer is an unsaturated lactone, it is a waxy solid insoluble in water at normal temperature, it can be used as a paper sizing agent, but it must be prepared into an emulsion before use, it is currently the most alkaline in the paper industry One of the commonly used sizing agents for sizing. The hydrolysis rate of the lactone ring in the alkyl ketene dimer emulsion is slow, and the emulsion droplets are solid particles at room temperature. The emulsion has good storage performance, high sizing efficiency, and relatively low cost. These advantages promote its wide use. . However, compared with alkenyl succinic anhydride, alkyl ketene ...

Claims

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Application Information

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IPC IPC(8): D21H17/17D21H21/16C08F212/08C08F220/18C08F226/02C08F220/56
CPCC08F212/08C08F220/56D21H17/17D21H17/72D21H21/16
Inventor 李治秦玉陶张何纪张晓杰
Owner 上海镁锶钡实业有限公司