A kind of acrylate-styrene-acrylonitrile graft copolymer and preparation method thereof

A technology of graft copolymer and acrylate, which is applied in the field of acrylate-styrene-acrylonitrile graft copolymer and its preparation, can solve the problems of cumbersome operation, difficult large-scale application, and difficult preparation of vinyl monomers. Achieve the effect of simple process, convenient process control, stable and controllable reaction process

Active Publication Date: 2022-03-08
嘉兴华雯化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above existing technologies can improve the grafting efficiency, but the preparation of ethylenic monomers with initiating function is difficult and difficult for large-scale application
Although the formation of a redox system between the N-vinyl copolymer layer and the peroxide can improve the grafting efficiency, an additional amine sealing layer needs to be manufactured, which is cumbersome to operate

Method used

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  • A kind of acrylate-styrene-acrylonitrile graft copolymer and preparation method thereof
  • A kind of acrylate-styrene-acrylonitrile graft copolymer and preparation method thereof
  • A kind of acrylate-styrene-acrylonitrile graft copolymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Add 1200g deionized water to the reaction kettle, add 6.4g sodium lauryl sulfate, 2.4g 4,4'-azobis(4-cyanovaleric acid), 40g butyl acrylate, methyl Ethylene glycol acrylate 0.2g, stirred and emulsified for 0.5h. The temperature was raised to 70° C., and after 0.5 h of reaction, a mixture of 760 g of butyl acrylate and 3.8 g of ethylene glycol methacrylate was added dropwise, continued for 2 h, and kept warm for 1 h.

[0026] (2), 500g of deionized water, 1.25g of sodium lauryl sulfate, 1.5g of potassium persulfate, 248g of styrene, 82g of acrylonitrile, 1.65g of glycidyl methacrylate were added to the pre-emulsification kettle and emulsified for 0.5h, Take 1250g of the emulsion in (1), raise the temperature to 80°C, start dropwise addition, and finish dropping in about 2 hours, raise the temperature to 85°C and keep it for 1 hour, then cool down to 40°C and discharge.

[0027] (3), raise the temperature of the grafted emulsion in (2) to 80°C, add calcium chloride s...

Embodiment 2

[0029] (1) Add 960g of deionized water to the reaction kettle, add 4g of sodium lauryl sulfate, 0.8g of 4,4'-azobis(4-cyanovaleric acid), 80g of butyl acrylate, ethyl methacrylate Glycol ester 0.24g, emulsified for 0.5h. The temperature was raised to 65° C., and after 0.5 h of reaction, a mixture of 720 g of butyl acrylate and 2.76 g of ethylene glycol methacrylate was added dropwise, continued for 2 h, and kept warm for 1 h.

[0030] (2) Add 1107g of deionized water, 0.4g of sodium lauryl sulfate, 0.1g of sodium dodecylbenzenesulfonate, 0.5g of potassium persulfate, 226g of styrene, 150g of acrylonitrile, methyl Emulsify 7.54g of glycidyl acrylate for 0.5h; take 1250g of the emulsion in step (1), raise the temperature to 80°C, start to add the pre-emulsion liquid dropwise, finish dropping in about 4h, raise the temperature to 90°C and keep it for 1h, then cool down to 40°C. material.

[0031] (3) Heat up the grafted emulsion in 2 to 80°C, add calcium chloride solution, stir...

Embodiment 3

[0033](1) Add 1440g of deionized water to the reactor, add 10g of sodium lauryl sulfate, 14g of alkylphenol polyoxyethylene ether OP, 2,2'-azobis(2-methylpropylamidine) disalt salt, 2,2'-azobis[N-(2-carboxyethyl)-2-methylpropionamidine] 4g each, after dissolving, add 160g of butyl acrylate and 3.2g of ethylene glycol methacrylate, Emulsify for 0.5h. The temperature was raised to 75° C., and after 0.5 h of reaction, a mixture of 640 g of butyl acrylate and 12.8 g of allyl methacrylate was added dropwise, continued for 3 h, and kept warm for 1 h.

[0034] (2) Add 580g of deionized water, 0.1g of sodium lauryl sulfate, 0.1g of potassium persulfate, 235g of styrene, 58g of acrylonitrile, and 14g of glycidyl methacrylate to emulsify for 0.5h in the pre-emulsification kettle. 1250g of the emulsion in (1), heated up to 80°C, dripped in about 2 hours, raised the temperature to 90°C for 1 hour, cooled to 40°C and discharged.

[0035] (3) Warm up the grafted emulsion in 2 to 80°C, add...

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Abstract

The invention discloses an acrylate-styrene-acrylonitrile graft copolymer and a preparation method thereof. By adopting an azo-type water-soluble initiator having an amine group and a carboxyl group, an amine group and a carboxyl group are introduced when preparing an acrylate inner core. and other reactive end groups, and at the same time, vinyl monomers with epoxy groups are added during the synthesis of the shell SAN hard shell. Active groups such as amine groups and carboxyl groups react with epoxy groups during the grafting process, which greatly improves the grafting rate and grafting efficiency of the shell layer, thereby improving the impact performance of the grafted powder.

Description

technical field [0001] The invention belongs to the technical field of synthesis of plastic modifiers, in particular to an acrylate-styrene-acrylonitrile graft copolymer and a preparation method thereof Background technique [0002] Acrylate-styrene-acrylonitrile graft copolymer (ASA or AAS resin for short) has a multi-layer structure similar to ABS, also known as core-shell structure. At present, its preparation method mainly adopts step-by-step emulsion polymerization: the seed latex is first synthesized by seed emulsion polymerization, and at the same time, a cross-linking agent is used to form a suitable cross-linking degree. Shell monomers and initiators initiate grafting, or directly drop other monomer initiators into the seed emulsion to initiate grafting reactions to form shells, thereby preparing polymers with core-shell structures. Because its elastic acrylate rubber core does not contain double bonds, it has better weather resistance than the polybutadiene struct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F265/06C08F265/04C08F220/18C08F220/20C08F220/32C08F212/08C08F220/44C08F220/40C08F2/26
Inventor 朱延谭李昌鸿曾王杰田冶
Owner 嘉兴华雯化工股份有限公司
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