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Modified white latex

A technology of modification of white latex, applied in the field of modified white latex, can solve the problems of poor water resistance and cold resistance of white lactic acid, and achieve the effects of good water resistance, great market promotion value, and high viscosity

Inactive Publication Date: 2014-07-16
上海吉妮乳胶厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the shortcomings of white lactic acid such as poor water resistance and cold resistance, the present invention provides a method for modifying white lactic acid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 100g of vinyl acetate, 7g of acrylic acid, 15g of butyl acrylate; 0.066g of ammonium sulfate initiator, and 0.44g of emulsifier. According to the aforementioned preparation process, a modified polyvinyl acetate emulsion adhesive is prepared. Its properties were determined as follows: the solid content was 41%, the emulsion viscosity was 200 mPa·S, and the water resistance was 31 min.

Embodiment 2

[0021] Take 100 g of vinyl acetate, 7 g of acrylic acid, and 15 g of butyl acrylate; 0.066 g of ammonium sulfate as an initiator, and 0.55 g of PVA as an emulsifier. According to the aforementioned preparation process, a modified polyvinyl acetate emulsion adhesive is prepared. Its properties were measured as follows: the solid content was 42%, the emulsion viscosity was 450mPa·S, and the water resistance was 57min.

Embodiment 3

[0023] Take 100 g of vinyl acetate, 7 g of acrylic acid, and 15 g of butyl acrylate; 0.066 g of ammonium sulfate as an initiator, and 0.616 g of PVA as an emulsifier. According to the aforementioned preparation process, a modified polyvinyl acetate emulsion adhesive is prepared. Its properties were measured as follows: the solid content was 45%, the emulsion viscosity was 850mPa·S, and the water resistance was 79min.

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PUM

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Abstract

The invention discloses a modified white latex which comprises the following components in parts by weight: 10 parts of vinyl acetate, 0.7 part of acrylic acid, and 1.5 pars of butyl acrylate; the amount of an initiator is 0.3% of the sum of the amounts of acrylic acid and butyl acrylate, and the amount of an emulsifier is 2%-3% of the sum of the amounts of acrylic acid and butyl acrylate. The white latex after modification has high viscosity, can form a film at room temperature, has the advantages of relatively good bonding strength, relatively good water resistance and the like, and has relatively great market popularization value.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a modified white latex. Background technique [0002] Polyvinyl acetate emulsion is a widely used water-based adhesive, and its annual demand is second only to urea-formaldehyde adhesive. As a water-based adhesive, polyvinyl acetate (PVAC) emulsion (commonly known as white latex) has the advantages of low price, easy production, convenient use, high bonding strength, non-toxic and harmless, no environmental pollution, non-flammable and explosive, etc. widely used. However, polyvinyl acetate latex also has deficiencies, such as poor water resistance and cold resistance, which limit its application prospects. Contents of the invention [0003] In order to solve the shortcomings of white lactic acid such as poor water resistance and cold resistance, the present invention provides a method for modifying white lactic acid. [0004] The technical scheme ado...

Claims

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Application Information

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IPC IPC(8): C09J131/04C08F218/08C08F220/06C08F220/18
Inventor 李明
Owner 上海吉妮乳胶厂
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