Cationic ethylene-vinyl acetate copolymer emulsion and production method thereof

A vinyl acetate and copolymer emulsion technology, applied in the field of cationic ethylene-vinyl acetate copolymer emulsion and its synthesis, can solve the problems of no industrialized products, no cationic VAE emulsion, etc., and achieves hard precipitation, excellent mechanical stability, stable good effect

Active Publication Date: 2014-03-26
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no relevant report on cationic VAE emu

Method used

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  • Cationic ethylene-vinyl acetate copolymer emulsion and production method thereof
  • Cationic ethylene-vinyl acetate copolymer emulsion and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of synthetic method of cationic ethylene-vinyl acetate copolymer emulsion, it is characterized in that: adopt above-mentioned each raw material component; It is prepared by comprising following preparation steps, wherein, described parts or percentages are mass parts:

[0038] (1) Pre-reaction preparation

[0039] Prepare emulsifier solution: add 3 parts of compound emulsifier (including 1 part of stearylamine polyoxyethylene ether diquaternary ammonium salt, 2 parts of polyvinyl alcohol) and 30 parts of deionized water into the reactor, start stirring, After mixing thoroughly, heat up to dissolve completely;

[0040] Preparation of initiator solution: a) Add 0.3 parts of ammonium persulfate and 5 parts of deionized water to initiator tank A and stir for 15 minutes to make initiator solution; b) Add 0.1 part of zinc formaldehyde sulfoxylate into reducing agent tank B , Stir 5 parts of deionized water for 15 minutes to prepare a reducing agent solution;

[0041]...

Embodiment 2

[0049] A kind of synthetic method of cationic ethylene-vinyl acetate copolymer emulsion, it is characterized in that: adopt above-mentioned each raw material component; It is prepared by comprising following preparation steps, wherein, described parts or percentages are mass parts:

[0050] (1) Pre-reaction preparation

[0051] Prepare emulsifier solution: add 5 parts of compound emulsifier (including 2 parts of didodecylamine polyoxyethylene ether diquaternary ammonium salt, 2 parts of polyether and 1 part of polyvinyl alcohol), 40 parts of deionized water, start stirring, mix well and heat up to make it completely dissolve;

[0052] Preparation of initiator solution: a) Add 0.3 parts of potassium persulfate and 5 parts of deionized water to initiator tank A and stir for 15 minutes to make initiator solution; b) Add 0.2 parts of sodium bisulfite, Stir 5 parts of deionized water for 15 minutes to prepare a reducing agent solution;

[0053] Preparation of mixed monomer: add 5...

Embodiment 3

[0061] A kind of synthetic method of cationic ethylene-vinyl acetate copolymer emulsion, it is characterized in that: adopt above-mentioned each raw material component; It is prepared by comprising following preparation steps, wherein, described parts or percentages are mass parts:

[0062] (1) Pre-reaction preparation

[0063] Prepare emulsifier solution: add 7.5 parts of compound emulsifier (including 2.5 parts of octadecyldimethylammonium bromide, 3 parts of polyether, 2 parts of etherified cellulose to 5 parts), 40 parts of deionized water, start stirring, mix well and heat up to make it completely dissolve;

[0064] Preparation of initiator solution: a) Add 0.5 parts of hydrogen peroxide (30%wt) and 10 parts of deionized water to initiator tank A and stir for 15 minutes to make initiator solution; b) Add 0.1 part of formaldehyde in initiator tank B Zinc sulfoxylate and 10 parts of deionized water were stirred for 15 minutes to form a reducing agent solution;

[0065] Pr...

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Abstract

The invention provides a cationic ethylene-vinyl acetate copolymer emulsion. The cationic ethylene-vinyl acetate copolymer emulsion is characterized by being prepared from a monomer, an initiating system and a composite emulsifying system as raw materials, wherein the monomer comprises 40 to 60 parts by mass of vinyl acetate, and 5 to 10 parts by mass of ethylene; the initiating system comprises 0.3 to 0.5 part by mass of oxidizing agent, and 0 to 0.3 part by mass of reducing agent; the composite emulsifying system comprises 1 to 2.5 parts by mass of cationic emulsifier, 2 to 5 parts by mass of non-ionic emulsifier, and 40 to 60 parts by mass of water. The copolymer emulsion is high in stability, difficultly produces precipitation, and shows outstanding adhering performance, water-retaining property and mechanical stability.

Description

technical field [0001] The invention relates to a cationic ethylene-vinyl acetate copolymer emulsion and a synthesis method thereof. Background technique [0002] Ethylene and vinyl acetate copolymer is the most important product in ethylene copolymer, and it is generally referred to as EVA in foreign countries. However, in my country, people divide ethylene and vinyl acetate copolymers into EVA resin, EVA rubber and VAE emulsion according to the content of vinyl acetate. VAE emulsion generally contains more than 70% vinyl acetate. Because it introduces the ethylene molecular chain into the polyvinyl acetate molecule, which makes the acetyl group discontinuous, increases the rotational freedom of the polymer chain, has small steric hindrance, makes the polymer main chain soft, and does not undergo plasticization Agent migration ensures permanent softness of the product. VAE emulsion has good alkali resistance, good low temperature performance, excellent adhesive performan...

Claims

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Application Information

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IPC IPC(8): C08F218/08C08F210/02C08F220/28C08F220/18C08F2/30C08F2/28C08F4/40
Inventor 罗丽华胡军张波宁威曹勇戴祖贵吴江红邱萱贺德彬李清扬
Owner CHINA PETROCHEMICAL CORP
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