Preparation method of acrylate-styrene-acrylonitrile nuclear shell grafted copolymer

A graft copolymer and acrylate technology, which is applied in the field of preparation of acrylate-styrene-acrylonitrile core-shell graft copolymers, can solve problems such as reducing the weather resistance of materials, improve impact performance, and avoid poor coating. Strict, improve the effect of grafting rate

Inactive Publication Date: 2019-04-16
CHONGQING YUNTIANHUA HIGH END NEW MATERIALS DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And with the improvement of consumers' demand for product quality, higher weather resistance is required for materials used in outdoor or external environments, but the activation solution introduced when oil-soluble redox systems are used in the prior art reduces the durability of materials. Weather resistance

Method used

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  • Preparation method of acrylate-styrene-acrylonitrile nuclear shell grafted copolymer
  • Preparation method of acrylate-styrene-acrylonitrile nuclear shell grafted copolymer
  • Preparation method of acrylate-styrene-acrylonitrile nuclear shell grafted copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Preparation of seed latex

[0025] The following ingredients were added into the polymerization reactor at one time under nitrogen atmosphere, and reacted at 20° C. and 400 RPM stirring speed for 10 hours. The obtained seed latex has a diameter of 86nm and a monomer conversion rate of 96.7%.

[0026]

[0027]

[0028] 2. Preparation of acrylate rubber core

[0029] Put all the following ingredients except potassium persulfate into the pre-emulsification container in turn for pre-emulsification, after the pre-emulsification is completed, add it and potassium persulfate continuously to the seed latex reactor at 20°C and 150RPM stirring speed for acrylic acid Preparation of Ester Rubber Cores. The obtained acrylate rubber core latex has a diameter of 240nm and a monomer conversion rate of 80.6%.

[0030]

[0031] 3. Preparation of rubber cores containing initiator-type monomers on the outer surface

[0032] (1) Preparation of azo initiator type monomer

[...

Embodiment 2

[0045] The ASA resin was prepared and its properties were tested in the same manner as in Example 1, except that the amount of azo initiator type monomer added in the polymerization step 3 was 0.5 parts by weight.

Embodiment 3

[0047] The ASA resin was prepared and its properties were tested in the same manner as in Example 1, except that the amount of azo initiator type monomer added in the polymerization step 3 was 1 part by weight.

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Abstract

The invention discloses a preparation method of an acrylate-styrene-acrylonitrile nuclear shell grafted copolymer. The method comprises the following steps of 1 preparing seed latex, 2 preparing acrylate rubber nuclear, 3 preparing a rubber nuclear with the outer surface containing an initiator monomer, and 4 preparing a grafted SAN shell layer. The method can effectively improve the SAN shell layer grafting rate, the problems that wrapping of the acrylate rubber nuclear is not right or uniform are avoided, meanwhile, the powder characteristic of the grafted copolymer is improved, and the dyeing property is remarkably improved. Meanwhile, under the condition that no agglomeration technology is performed, the grain size of the acrylate rubber nuclear can reach 180-600 nanometers, and the impact performance is improved.

Description

technical field [0001] The invention relates to a preparation method of acrylate-styrene-acrylonitrile core-shell graft copolymer. Background technique [0002] Acrylate-styrene-acrylonitrile core-shell graft copolymer, also known as ASA high rubber powder, was first developed and produced by BASF in Germany. Compared with ABS high-grade rubber powder, ASA high-grade rubber powder introduces acrylate-substituted butadiene without double bonds, and the weather resistance has been substantially improved. It can not only resist degradation, aging and fading caused by ultraviolet radiation, but also prevent oxidation. Decomposition or discoloration caused by high temperature during processing greatly improves the anti-pyrolysis aging and weather resistance of the material. Acrylate-styrene-acrylonitrile core-shell graft copolymer has two main uses, one is directly used as a modifier for toughening modified polyvinyl chloride (PVC), polycarbonate (PC), nylon (PA) and other ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/04C08F220/18C08F212/36C08F220/14C08F222/14C08F212/08C08F220/44C08F222/28C08F218/00C08F2/26C08F2/30
CPCC08F2/26C08F2/30C08F220/18C08F220/1804C08F265/04C08L51/003C08L2207/53C08F212/08C08F220/44C08F212/36C08L25/12C08K3/04C08F220/1803C08F220/14C08F222/102
Inventor 邱瑜古文正吕新坤陈凯陈玉仙胡明源向斌聂爽张琪
Owner CHONGQING YUNTIANHUA HIGH END NEW MATERIALS DEV CO LTD
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