Surface sizing agent for paper making

A technology of surface sizing agent and starch, which is applied in the direction of papermaking, textiles, papermaking, paper, etc., can solve the problems of poor mutual solubility, mechanical stability, chemical stability, low foaming performance, etc., to improve the degree of sizing and improve the surface Strength, effect of preventing penetration

Inactive Publication Date: 2008-07-23
杨春先
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a surface sizing agent for papermaking, the purpose of which is to solve the problem of poor mutual solubility caused by the existing surface sizing agents when they are mixed and used
At the same time, the problems of mechanical stability, chemical stability and low foaming performance of the existing surface sizing agents are solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Surface sizing agent for papermaking, the raw material formula consists of the following ingredients and weight percentages:

[0032] Modified starch 76Kg (7.6%), styrene 51.3Kg (5.13%), acrylonitrile 41Kg (4.1)%, n-butyl methacrylate 57Kg (5.7%), isooctyl methacrylate 22Kg (2.2%), acrylic acid Isooctyl ester 7Kg (0.7%), hydrogen peroxide 4Kg (0.4%), formic acid 6.6Kg (0.66%), ferrous sulfate 6.5Kg (0.65%), n-dodecyl mercaptan 7.2Kg (0.72%), water 722Kg , a total of 1000Kg.

[0033] When the surface sizing agent is prepared, it is operated according to the prior art. Usually, the making of the surface sizing agent consists of the following steps:

[0034] The first step, feeding: first feed isooctyl acrylate, n-butyl methacrylate, isooctyl methacrylate, n-dodecyl mercaptan, styrene and acrylonitrile into the first high tank; Water and hydrogen peroxide are thrown into the two high level tanks. The materials in the two high-level tanks are stirred evenly after feeding...

Embodiment 2

[0039] Surface sizing agent for papermaking, the raw material formula consists of the following ingredients and weight percentages:

[0040] Starch 75Kg (7.5%), styrene 46.8Kg (4.68%), acrylonitrile 42.1Kg (4.21%), n-butyl methacrylate 55.9Kg (5.59%), isooctyl methacrylate 23Kg (2.3%), Isooctyl acrylate 5.86Kg (0.586%), hydrogen peroxide 4Kg (0.4%), formic acid 6.6Kg (0.66%), ferrous sulfate 7.5Kg (0.75%), n-dodecyl mercaptan 13.15Kg (1.315%), Amylase 0.09Kg (0.009%), water 720Kg, a total of 1000Kg. The preparation of the surface sizing agent refers to Example 1.

Embodiment 3

[0042] Surface sizing agent for papermaking, the raw material formula consists of the following ingredients and weight percentages:

[0043] Starch 65.99Kg (6.599%), styrene 46Kg (4.6%), acrylonitrile 40Kg (4%), n-butyl methacrylate 55Kg (5.5%), hydrogen peroxide 2Kg (0.2%), formic acid 6Kg (0.6%), Ferrous sulfate 17Kg (1.7%), n-dodecyl mercaptan 6.5Kg (0.65%), amylase 0.01Kg (0.001%), water 757Kg, a total of 1000Kg. The preparation of the surface sizing agent refers to Example 1.

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PUM

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Abstract

The invention relates to a surface sizing agent for paper making, which has the material formula with a plurality of components and weight percentages as follows: starch 6.5-8%, styrene 4.5-6%, acrylonitrile 4-5%, n-butyl methacrylate 5.5-6.5, methacrylic acid iso-octyl 2-3.5, iso-octyl acrylate 0.4-1%, hydrogen peroxide 0.2-0.5%, formic acid0.5-1%, ferrous sulfate 0.5-4%, n-dodecyl mercaptan 0.5-3%, amylase 0-0.2% and water the rest, wherein at least one is chosen from n-butyl methacrylate, methacrylic acid iso-octyl and iso-octyl acrylate. The appearance of the surface sizing agent is slight yellow emulsion, and the main component is styrene-acrylic copolymer which is easily soluble at normal temperature. The surface sizing agent for paper making has the advantages of greatly increasing paper surface intensity, decreasing hair and powder shedding, and improving the sizing degree, smoothness and printability of paper.

Description

technical field [0001] The invention belongs to the field of chemicals for papermaking, in particular to a surface sizing agent for papermaking. Background technique [0002] Sizing refers to a process and technology of applying sizing material in pulp or paper, the purpose of which is to maintain the dimensional stability of the paper, prevent shrinkage, reduce the water absorption and ink absorption of the paper, and improve the smoothness of the paper , Printing adaptability, thereby improving the quality of paper. The method of sizing can be divided into internal sizing and surface sizing. Classified according to the sizing method, sizing agents can be divided into pulp sizing agents and surface sizing agents, among which the pulp sizing agents are chemical additives added to pulp to prevent the diffusion and penetration of water-based liquids. With the development of papermaking industry and chemical industry, surface sizing agent has become the main form of paper sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/16D21H17/28D21H17/04D21H17/07D21H17/14D21H17/63D21H17/65D21H17/09D21H17/22
Inventor 杨春先
Owner 杨春先
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