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Impact modifier MBS resin of polyvinyl chloride

An impact modifier, polyvinyl chloride technology, applied in the field of polyvinyl chloride impact modifier MBS resin, can solve the problems of reduced impact strength, reduced proportion, control of stress whitening, etc.

Active Publication Date: 2010-09-29
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method will reduce the proportion of grafted monomers in the MBS resin, resulting in thinning of the rubber shell or incomplete wrapping, resulting in bare rubber cores or reduced interfacial bonding thickness, resulting in the blending of MBS resin and PVC. The interface bonding force becomes worse, and the impact strength is significantly reduced
In the above patents, it is difficult to ensure the impact strength of the product while controlling the anti-stress whitening

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Preparation of inner core polymer

[0019] 200 parts deionized water, 0.002 parts ferrous sulfate heptahydrate, 0.0033 parts sodium ethylene diamine tetraacetate (EDTA), 0.108 parts sodium pyrophosphate, 0.075 parts white block, 7.5 parts butadiene, 15 parts styrene, 0.5 Parts divinylbenzene, 0.075 parts dicumyl hydrogen peroxide and 0.3 parts potassium oleate. The above reaction mixture is added to the polymerization reactor, and the polymerization reaction is carried out at 60° C. for 16 hours to prepare the first stage polymer (core inner layer polymer) latex with a monomer conversion rate of over 99%.

[0020] (2) Preparation of outer core polymer

[0021] Add 0.6 parts of potassium oleate (OLK) to the first stage polymer latex prepared above to adjust the pH value of the latex to 10. Add 28 parts of butadiene, 9 parts of styrene, 0.5 parts of divinylbenzene, 10 parts of deionized water, 0.045 parts of carbs and 0.09 parts of dicumyl peroxide to the latex. The reacti...

Embodiment 2

[0026] (1) Preparation of inner core polymer

[0027] In repeating the preparation process of Example 1, 1.05 parts of butadiene, 21.45 parts of styrene, and 0.5 parts of divinylbenzene were added. The auxiliary agent was added in the same proportion as that of Example 1, and the others were the same as Example 1.

[0028] (2) Preparation of outer core polymer

[0029] The same as in Example 1.

[0030] (3) Preparation of shell polymer

[0031] The same as in Example 1.

Embodiment 3

[0033] (1) Preparation of inner core polymer

[0034] In repeating the preparation process of Example 1, 10.60 parts of butadiene, 11.90 parts of styrene, and 0.5 part of divinylbenzene were added. The auxiliary agent was added in the same proportion as that of Example 1, and the others were the same as that of Example 1.

[0035] (2) Preparation of outer core polymer

[0036] The same as in Example 1.

[0037] (3) Preparation of shell polymer

[0038] The same as in Example 1.

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PUM

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Abstract

The invention relates to a polyvinyl chloride impact modifier MBS resin which comprises the following components by mass: (1) 10-55 parts of intranuclear polymer consists of 5-45 percent of conjugateddiene, 45-95 percent of unsaturated aromatic hydrocarbon vinyl monomer and 0-10 percent of cross linker; (2) 20-70 parts of extranuclear polymer consists of 65-85 percent of conjugateddiene, 10-34 percent of unsaturated aromatic hydrocarbon vinyl monomer and 1-5 percent of cross linker; and (3) 15-45 parts of shell polymer consists of 0-5 percent of cross linker, 60-90 percent of alkyl methacrylate or alkyl acrylate and 10-35 percent of unsaturated aromatic hydrocarbon vinyl monomer. The mixture product of the MBS resin and PVC has excellent crease and folding resistance and good impact resistance.

Description

Technical field [0001] The invention relates to a polyvinyl chloride impact modifier MBS resin with excellent anti-folding and whitening performance and good impact resistance. Background of the invention [0002] As we all know, polyvinyl chloride resin can improve its impact resistance by blending with impact modifiers. Such impact modifiers are usually copolymers of one or more vinyl monomers. For example: styrene, methyl methacrylate and acrylonitrile, this copolymer is grafted on the rubber phase to form a graft copolymer. This kind of graft copolymer has good light transmittance and impact resistance, but when the product is bent or folded, stress whitening is very easy to occur. The higher the impact strength of this modifier, the higher the stress resistance. The whitening phenomenon is more obvious. Under normal circumstances, it is difficult to achieve both good impact strength and excellent stress whitening resistance. Some patents have also reported on this. Both...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/00C08L27/06C08F285/00
Inventor 李晶赵金德王硕张辉李金鹰于刚陈继新刘长清
Owner BC P INC CHINA NAT PETROLEUM CORP
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