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A kind of isoprene latex and preparation method thereof

A technology of isoprene latex and conjugated diene, which is applied in the field of composite rubber materials, can solve the problems that the comprehensive performance cannot meet the actual requirements, the consumption ratio decreases, and the tensile performance is weak, etc., and achieve regular three-dimensional structure and low surface tension , high friction resistance

Active Publication Date: 2022-05-06
RIZHAO GUANGDA BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, driven by industries such as automotive materials and latex gloves, the global demand for styrene-butadiene rubber has continued to grow, but its consumption ratio has declined, because although traditional emulsion-polystyrene-butadiene rubber has better wet resistance However, due to the disadvantages of poor wear resistance and weak tensile properties, its comprehensive performance is often difficult to meet the actual requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An isoprene latex, in parts by weight, is made of the following raw materials: 25 parts of aliphatic conjugated dienes, 35 parts of aromatic vinyl compounds, 0.5 parts of vinyl unsaturated carboxylic acids, vinyl unsaturated 0.5 parts of saturated amide, 0 parts of ethylenically unsaturated nitrile monomer, 2.5 parts of vinyl unsaturated crosslinking monomer, 0.4 part of anionic emulsifier, 0.15 part of nonionic emulsifier, 1 part of initiator, 0.5 part of chain transfer agent , 0.5 parts of pH regulator, and 100 parts of deionized water.

[0027] The aliphatic conjugated diene includes butadiene or isoprene with a mass ratio of 1:7; the aromatic vinyl compound is styrene; the ethylenically unsaturated carboxylic acid is methacrylic acid; the The ethylenically unsaturated amide is methylol acrylamide; the ethylenically unsaturated nitrile monomer is acrylonitrile; and the ethylenically unsaturated crosslinking monomer is vinyl acetate and acrylate.

[0028] The anionic...

Embodiment 2

[0035] An isoprene latex, in parts by weight, is made from the following raw materials: 40 parts of aliphatic conjugated dienes, 25 parts of aromatic vinyl compounds, 1.5 parts of vinyl unsaturated carboxylic acids, vinyl unsaturated 0.1 part of saturated amide, 1.5 parts of vinyl unsaturated nitrile monomer, 0.2 part of vinyl unsaturated crosslinking monomer, 1 part of anionic emulsifier, 0.08 part of nonionic emulsifier, 1.6 parts of initiator, 0.1 part of chain transfer agent , 0.8 parts of pH regulator, and 100 parts of deionized water.

[0036] The aliphatic conjugated dienes include butadiene or isoprene at a mass ratio of 1:1; the aromatic vinyl compound is styrene and dimethylstyrene at a mass ratio of 1:1.3; the ethylene The unsaturated carboxylic acid is itaconic acid and maleic anhydride with a mass ratio of 1:1.2; the vinyl unsaturated amide is acrylamide and methylolacrylamide with a mass ratio of 1:1.3; the vinyl is not The saturated nitrile monomer is acrylonit...

Embodiment 3

[0044] An isoprene latex, in parts by weight, is made from the following raw materials: 32 parts of aliphatic conjugated dienes, 30 parts of aromatic vinyl compounds, 1 part of vinyl unsaturated carboxylic acid, vinyl unsaturated 0.3 parts of saturated amide, 1 part of ethylenically unsaturated nitrile monomer, 1.5 parts of vinyl unsaturated crosslinking monomer, 0.8 part of anionic emulsifier, 0.11 part of nonionic emulsifier, 1.2 parts of initiator, 0.4 part of chain transfer agent , pH regulator 0.6 parts, deionized water added to 100 parts.

[0045] The aliphatic conjugated dienes include butadiene or isoprene at a mass ratio of 1:1; the aromatic vinyl compound is styrene and dimethylstyrene at a mass ratio of 1:1.3; the ethylene The unsaturated carboxylic acid is acrylic acid, methacrylic acid, itaconic acid, maleic anhydride with a mass ratio of 1:1.3:1.2:1.5; the ethylenically unsaturated amide is a mass ratio of 1:1.3:1.2:1.4:1.5 Acrylamide, methacrylamide, dimethylac...

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PUM

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Abstract

The invention discloses an isoprene latex and a preparation method thereof, which comprises aliphatic conjugated dienes, aromatic vinyl compounds, vinyl unsaturated carboxylic acids, vinyl unsaturated amides, The latex has small particle size, narrow distribution, regular three-dimensional structure, good stability, low surface tension, high tensile strength, and high friction resistance. Excellent mechanical properties.

Description

technical field [0001] The invention relates to an isoprene latex and a preparation method thereof. The invention belongs to the technical field of composite rubber materials. Background technique [0002] Future Market Insights announced on February 13, 2019 that the market for isoprene latex will continue to grow at an annual growth rate of 7%, and will exceed 390,000 tons by the end of 2020. In recent years, the isoprene latex market has grown healthily and steadily, and it is predicted that the market value will reach 1.2 billion US dollars by 2028. Leading technology companies occupy about 70% of the market value share, and the remaining 30% share is occupied by small and medium-sized enterprises focusing on the manufacture of isoprene latex through global sales. [0003] Isoprene latex is widely used, due to its good raw rubber strength, basic viscosity, aging resistance and rebound performance, it is an important raw material for the production of automobile tires, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F236/10C08F220/06C08F220/58C08F220/48C08F218/08C08F220/10C08F212/12C08F2/26C08F2/30C08F2/44C08K9/06C08K3/04
CPCC08F212/08C08F236/10C08F212/12C08F2/26C08F2/30C08F2/44C08K9/06C08K3/04C08F220/06C08F220/58C08F220/48C08F218/08C08F220/10C08F222/02C08F222/06C08F220/56C08F210/08C08F220/54
Inventor 刘江郭伟丁子豪程昌华刘海琴范开成
Owner RIZHAO GUANGDA BUILDING MATERIALS