A kind of carboxylated nitrile latex for gloves and preparation method thereof

A technology of carboxylated nitrile latex and gloves, which is applied in the field of latex, can solve the problems of insufficient mechanical stability and chemical stability, achieve excellent chemical stability and mechanical stability, improve stability and fluidity, and be easy to control.

Active Publication Date: 2022-08-05
河北中宫睿宸医用新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, carboxylated nitrile latex still has obvious deficiencies in terms of mechanical stability and chemical stability, and needs to be vigorously developed.

Method used

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  • A kind of carboxylated nitrile latex for gloves and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method of carboxylated nitrile latex for gloves, comprising the steps:

[0028] A. In parts by mass, weigh the raw materials, including 80 parts of deionized water, 3 parts of molecular weight regulator, 0.2 part of pH buffer, 6 parts of emulsifier, 40 parts of butadiene, 40 parts of acrylonitrile, functional monomers 10 parts, 5 parts of unsaturated carboxylic acid, 0.3 part of initiator, 0.6 part of auxiliary; the functional monomers are ethylene glycol diacrylate and diallyl maleate with a mass ratio of 1:1:1 esters and propylene acetate;

[0029] The molecular weight regulator is n-dodecyl mercaptan; the pH buffer is potassium hydrogen phthalate and distilled water with a mass ratio of 1.0:9; the emulsifier is dodecyl with a mass ratio of 1:1.2:1 Sodium benzenesulfonate, ethylene oxide lauryl alcohol and propylene glycol monostearate; unsaturated carboxylic acid is methacrylic acid and acrylic acid with a mass ratio of 1:1; initiator is potassium pers...

Embodiment 2

[0035] A preparation method of carboxylated nitrile latex for gloves, comprising the steps:

[0036] A. In parts by mass, weigh the raw materials, including 100 parts of deionized water, 1 part of molecular weight regulator, 0.4 part of pH buffer, 2 parts of emulsifier, 60 parts of butadiene, 15 parts of acrylonitrile, and functional monomers 20 parts, 2 parts of unsaturated carboxylic acid, 1.5 part of initiator, and 0.4 part of auxiliary; the functional monomers are ethylene glycol diacrylate and diallyl maleate with a mass ratio of 1:1.2:0.5 esters and propylene acetate;

[0037] The molecular weight regulator is tertiary dodecyl mercaptan; the pH buffer is potassium hydrogen phthalate and distilled water with a mass ratio of 2:8; the emulsifier is dodecylbenzenesulfonic acid with a mass ratio of 2:0.5:2 Sodium, ethylene oxide lauryl alcohol and propylene glycol monostearate; unsaturated carboxylic acid is methacrylic acid and acrylic acid with a mass ratio of 2:1; initiat...

Embodiment 3

[0043] A preparation method of carboxylated nitrile latex for gloves, comprising the steps:

[0044] A. In parts by mass, weigh the raw materials, including 90 parts of deionized water, 2 parts of molecular weight regulator, 0.3 part of pH buffer, 5 parts of emulsifier, 50 parts of butadiene, 30 parts of acrylonitrile, functional monomers 15 parts, 3 parts of unsaturated carboxylic acid, 1.0 part of initiator, and 0.5 part of auxiliary; the functional monomers are ethylene glycol diacrylate and diallyl maleate with a mass ratio of 1:1.1:0.8 esters and propylene acetate;

[0045] Described molecular weight regulator is n-dodecyl mercaptan and tertiary dodecyl mercaptan with mass ratio of 1:2; pH buffer is potassium hydrogen phthalate and distilled water with mass ratio of 1.5:8.3; emulsifier is mass ratio Sodium dodecylbenzenesulfonate, ethylene oxide lauryl alcohol and propylene glycol monostearate in a ratio of 1.5:1.0:1.5; unsaturated carboxylic acid is methacrylic acid, ac...

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Abstract

The invention relates to a carboxyl nitrile latex for gloves and a preparation method thereof. Specifically, in parts by mass, the raw materials include 80-100 parts of deionized water, 1-3 parts of a molecular weight regulator, and 0.2-0.4 parts of a pH buffer. , 2-6 parts of emulsifier, 40-60 parts of butadiene, 15-40 parts of acrylonitrile, 10-20 parts of functional monomer, 2-5 parts of unsaturated carboxylic acid, 0.3-1.5 parts of initiator, 0.4 part of auxiliary ~0.6 parts; the functional monomers include ethylene glycol diacrylate, diallyl maleate and isopropenyl acetate in a mass ratio of 1:(1-1.2):(0.5-1). The carboxylated nitrile latex of the present invention has excellent chemical stability and mechanical stability.

Description

technical field [0001] The invention belongs to the field of latex, in particular to a carboxylated nitrile latex for gloves and a preparation method thereof. Background technique [0002] Nitrile-butadiene latex (NBR) is a latex made from the copolymerization of monomers such as butadiene and acrylonitrile. The latex gloves made of nitrile latex have good oil resistance and chemical resistance, and are widely used in industrial and civilian use. Carboxylated nitrile latex is referred to as XNBRL, milky white liquid, anionic polymer emulsion. The latex has relatively uniform molecular weight and particle size distribution, oil resistance, solvent resistance, acid and alkali resistance, and can be cross-linked with sulfur and metal oxides, and its stability is better than that of natural latex and common nitrile latex. Carboxylated nitrile latex is a special latex copolymerized by butadiene, acrylonitrile and methacrylic acid emulsion. It has excellent oil resistance, solve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F236/12C08F220/46C08F220/06C08F222/14C08F222/28C08F218/12C08F222/02
CPCC08F236/12C08F220/46C08F220/06C08F222/102C08F222/28C08F218/12C08F222/02
Inventor 王兰英杜军
Owner 河北中宫睿宸医用新材料科技有限公司
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