Poly-vinyl versatate-vinyl acetate-ethylene emulsion and emulsion polymerization preparation method

A technology of polyvinyl tertiary carbonate and tertiary ethylene carbonate, applied in the field of terpolymer and its preparation, can solve the problems of unsatisfactory water resistance, solvent resistance and acid resistance, restricting the application and development of VAE emulsion, low strength, etc. , to achieve the effect of moderate molecular weight and distribution, excellent creep resistance and excellent performance

Active Publication Date: 2012-07-04
ANHUI WANWEI UPDATED HIGH TECH MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the performance of VAE emulsion is excellent, it still has defects such as unsatisfactory water resistance, solvent resistance and acid resistance, low strength, and excessive plasticity, which restricts the industrial application of VAE emulsion to a large extent. develop

Method used

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  • Poly-vinyl versatate-vinyl acetate-ethylene emulsion and emulsion polymerization preparation method
  • Poly-vinyl versatate-vinyl acetate-ethylene emulsion and emulsion polymerization preparation method
  • Poly-vinyl versatate-vinyl acetate-ethylene emulsion and emulsion polymerization preparation method

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Embodiment Construction

[0026] 1. Ingredients

[0027] a. Preparation of surfactants

[0028] With deionized water as solvent, weigh 26 kg of compound polyvinyl alcohol (i.e. polyvinyl alcohol 05-88, polyvinyl alcohol 14-98 and polyvinyl alcohol 17-88 mixed according to mass ratio 30:49:45), emulsifier 3.2kg of octylphenol polyoxyethylene ether and 1.8kg of reducing agent zinc sulfoxylate formaldehyde are prepared into 500kg of surfactant solution for use.

[0029] b. Preparation of monomer solution

[0030] 540 kg of vinyl acetate (VAc) with a purity of 99.5% and 5.4 kg of vinyl tertiary carbonate were mixed uniformly to obtain a monomer solution for use.

[0031] c. Preparation of oxidizing agent

[0032] Weigh 2.57 kg of hydrogen peroxide solution with a mass concentration of 35%, and dilute it to prepare an oxidizing agent hydrogen peroxide solution with a mass concentration of 1.8% for use.

[0033] 2. Polymerization

[0034] Put 500kg of surfactant solution and 2 / 3 of monomer solution into...

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Abstract

The invention discloses poly-vinyl versatate-vinyl acetate-ethylene emulsion and an emulsion polymerization preparation method. The poly-vinyl versatate-vinyl acetate-ethylene emulsion is copolymer emulsion with the solid content of 55.0-57.0 percent, which is prepared via free radical emulsion polymerization with vinyl versatate, vinyl acetate and ethylene as monomers, compound polyvinyl alcoholas protective colloid, octylphenol polyoxyethylene ether as an emulsifier and with the presence of redox initiators. The weight-average molecular weight of the terpolymer emulsion is 122,984-130,000,and the molecular weight distribution width is 5.295-6.000. The film prepared with the copolymer emulsion has good weathering resistance, alkali resistance, hydrolysis resistance, uniform particle size, appropriate molecular weight and distribution, low glass transition temperature (T is equal to below 2 DEG C), good film-forming performance, excellent performance and wide scope of application.

Description

1. Technical field [0001] The invention relates to a terpolymer and a preparation method thereof, specifically a polyvinyl tert-carbonate-vinyl acetate-ethylene emulsion and a preparation method thereof through emulsion polymerization. 2. Background technology [0002] At present, polyvinyl acetate emulsion is widely used in many aspects such as adhesives, coatings, construction, fabric processing, paper processing, etc., such as glue for bonding porous cellulose materials, wood, paper products, etc., latex coatings, Cement additives, fabric finishing agents, etc. However, since the polyvinyl acetate emulsion uses polyvinyl alcohol as the protective colloid, and polyvinyl alcohol itself has a large number of hydrophilic group hydroxyl groups, polyvinyl acetate is easily hydrolyzed under alkaline conditions, so that the molecular chains carry hydroxyl groups or The carboxyl group forms the inherent defects of polyvinyl acetate emulsion itself, such as poor water resistance, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F218/08C08F218/10C08F210/02C08F2/30C08F4/40
Inventor 汪成美吴福胜吴辉胜陆泰榕高申宝李庆光何盛教莫红丽
Owner ANHUI WANWEI UPDATED HIGH TECH MATERIAL CO LTD
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