ACR resin with excellent processing performance and applicable to PVC pipe fitting product

A technology of PVC pipe and processing performance, applied in the field of chemical synthesis, can solve the problems of butterfly spots, piebald spots, insufficient thermoelasticity, etc., and achieve the effects of excellent thermoelasticity, good dispersion, and excellent fusion

Active Publication Date: 2012-06-20
SHANDONG RUIFENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of ACR resin with excellent processability applied to PVC pipe fittings products, to solve the problems of mottled and butterfly spots that are easy to appear in the injection molding process of PVC pipe fittings, and the problem of insufficient thermoelasticity in the secondary processing process. question

Method used

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  • ACR resin with excellent processing performance and applicable to PVC pipe fitting product
  • ACR resin with excellent processing performance and applicable to PVC pipe fitting product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0016] Embodiment 1~3 all reacts according to the following steps:

[0017] Add soft water of 100% to 150% of the total mass of polymerized monomers in the three-stage emulsion polymerization reaction to the glass-lined reactor, add the first-stage polymerized monomer methyl methacrylate, ethyl acrylate and the three-stage emulsion polymerization reaction 3-9% of the emulsifier of the total mass of the polymerized monomers in the medium is heated to 50-55°C, and an initiator accounting for 0.01-0.03% of the total mass of the polymerized monomers in the three-stage emulsion polymerization is added to initiate the emulsion polymerization. Protect, make it naturally polymerize and heat up, react for 1.5-2 hours, control the reaction temperature at 70-85°C, after the first stage of reaction is completed, add the second stage monomer ethyl methacrylate and butyl acrylate, react for 1-1.5 hours, Control the reaction temperature at 70-85°C. After the second-stage reaction is complete...

Embodiment 1

[0019] initial reaction

Embodiment 2

[0021] initial reaction

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Abstract

The invention belongs to the chemical synthesis field, particularly relates to ACR resin with excellent processing performance and applicable to PVC pipe fitting products, is characterized in that the resin is graft polymer obtained by a three-stage emulsion polymerization reaction of polymeric monomers; the polymeric monomers in the first stage of the reaction are methyl methacrylate, and ethyl acrylate; the polymeric monomers in the second stage of the reaction are ethyl methacrylate and butyl acrylate; the polymeric monomers in the third stage of the reaction are methyl methacrylate, butyl methacrylate and butyl acrylate. The advantage of the invention is that the problems of piebaldness and butterfly speckles generated in PVC pipe fitting injection molding processing, and poor thermoelasticity in secondary processing are solved.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, and in particular relates to an ACR resin with excellent processing performance applied to PVC pipe fittings. Background technique [0002] As one of the five general-purpose plastics, PVC is widely used in industrial production and daily life. It is widely used in chemical building materials, agricultural and rural markets, industrial plastic products, automobiles and other vehicles, and packaging materials. the use of. According to statistics and predictions, the annual growth rate of my country's demand for polyvinyl chloride resin will be above 9% in the next few years, and the polyvinyl chloride resin industry has a broad space for development. [0003] The pipe fittings are made of polyvinyl chloride resin as the main raw material, added appropriate amount of additives, and are injection molded. They are new pipe fittings suitable for outdoor drainage of buildings and municipal sewage. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F285/00C08F265/06C08F220/14C08F220/18C08F2/26C08L51/00C08L27/06
Inventor 朱西堂刘春信葛峰咸春蕾
Owner SHANDONG RUIFENG CHEM
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