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Polyvinyl chloride propenoic acid esters impact modifier

A technology of polyvinyl chloride acrylic acid and acrylates, which is applied in the field of polyvinyl chloride acrylate impact modifiers, and can solve the problems of poor powder fluidity and poor processability

Inactive Publication Date: 2006-03-08
SHANDONG RIKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems of processability, impact resistance and weather resistance of traditional polyvinyl chloride impact modifiers, the present invention overcomes the traditional impact modifiers of acrylic elastomers in acrylate core-shell graft copolymerization In view of the disadvantages of poor powder fluidity and poor processability when the weight percentage content in the powder exceeds 80%, an improved polyvinyl chloride acrylate impact modifier is proposed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0050] This example is the specific process for preparing polyvinyl chloride mixture.

[0051] (1) Synthesis of seed latex

[0052] Add 100 parts by weight of water, 50 parts by weight of butyl acrylate, 0.5 parts by weight of allyl methacrylate, and 0.1 parts by weight of hydrogen peroxide into a four-necked flask equipped with a stirrer, a mercury thermometer and a nitrogen gas line Cumene, 0.002 parts by weight of ferrous sulfate, 0.1 parts by weight of sodium dodecylbenzene sulfonate, 0.1 parts by weight of sodium dodecylbenzene sulfonate after N 2 And after raising the temperature to 65° C. for 10 hours, the conversion rate of polymerization reached 98%. The particle size of the latex particles is 140 nm.

[0053] (2) Synthesis of acrylic elastomer

[0054] In the four-necked flask that stirrer, mercury thermometer and nitrogen pipeline are equipped with, add the water of 80 parts by weight, the solid content of 30 parts by weight in (1) synthetic is the seed latex of ...

example 2-6

[0074] The synthetic method of example 2-6 is identical with technique and embodiment 1, has two points with the difference of embodiment 1:

[0075] 1. Change the consumption of the acrylate elastomer emulsion in the synthesis of step (3) acrylate graft copolymer, to change the content of acrylate elastomer and the content of graft copolymer shell layer in the acrylate graft copolymer.

[0076] 2. Change the consumption of the acrylate graft copolymer and the processing aid in the synthesis of the step (5) acrylate impact modifier, so as to change the content of the two in the acrylate impact modifier.

[0077] See Table 1 for the contents of the acrylate elastomer, the graft copolymer shell, the acrylate graft copolymer and the processing aid in Examples 2-6.

[0078] The particle diameters of the latexes of the acrylate core-shell graft copolymers of Examples 2-6 measured by an electron microscope are 260-310 nm, all of which are larger than 150 nm. The glass transition te...

example 7

[0092] This example is an example of preparing a polyvinyl chloride acrylate impact modifier to further illustrate the present invention.

[0093] (1) Synthesis of seed latex

[0094] Add 100 parts by weight of water, 50 parts by weight of isooctyl acrylate, 0.5 parts by weight of divinylbenzene, 0.1 part by weight of diiso- Propylbenzene, the ferrous sulfate of 0.002 weight part, 0.1 weight part of white block, 0.5 weight part of sodium dodecylbenzene sulfonate, 0.008 weight part of EDTA back pass N 2 And after raising the temperature to 65° C. for 10 hours, the conversion rate of polymerization reached 98%. The particle diameter of the latex particles was 135 nm.

[0095] (2) Synthesis of acrylic elastomer

[0096] In the four-necked flask that stirrer, mercury thermometer and nitrogen pipeline are equipped with, add the water of 80 parts by weight, the solid content of 30 parts by weight in (1) synthetic is the seed latex of 33wt%, the dodecane of 1 part by weight Sodiu...

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PUM

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Abstract

The acrylate impact modifier for polyvinyl chloride with excellent weather resistance, machinability and impact resistance is prepared via mixing acrylate core-shell grafting copolymer and machining assistant. The acrylate core-shell grafting copolymer has acrylate elastomer content as high as 80 %, vitrification point of control core part lower than -20 deg.c, vitrification point of shell part higher than 50 deg.c, emulsion number-average grain size of 150-500 nm, and raised impact strength of the impact modifier. The addition of the machining assistant improves the flowability and machining property of the impact modifier. In addition, the product contains no double bond and thus has excellent weather resistance.

Description

technical field [0001] The invention relates to a polyvinyl chloride acrylate impact modifier, in particular to a polyvinyl chloride acrylate impact modifier with excellent weather resistance, impact resistance and processability. Background technique [0002] Generally speaking, the processing and forming performance of polyvinyl chloride resin is poor, and processing aids must be added to improve its processing performance; the impact strength of products after processing and forming polyvinyl chloride is poor, and various methods have been invented to improve the performance of polyvinyl chloride resin. The impact strength of the product. [0003] One of the methods is to add a terpolymer of butadiene-styrene-methyl methacrylate, that is, MBS resin to improve the impact strength of PVC products. However, although the impact strength of the product obtained after processing the mixture of MBS resin and PVC is relatively high, the weather resistance is poor. After being us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/00C08L27/06C08K5/11
Inventor 赵东日
Owner SHANDONG RIKE CHEM