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Method for preparing ASA (Acrylonitrile-Styrene-Acrylate) copolymer latex by using water-solubility redox initiator at low temperature

A technology of copolymer latex and initiator, which is applied in the field of preparing ASA copolymer latex, can solve the problems of poor repeatability and difficult control, and achieve the effects of good repeatability, easy operation and low energy consumption

Active Publication Date: 2013-08-21
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention adopts the emulsion polymerization method to initiate the polymerization through the water-soluble oxidizing agent and the reducing agent, and solves the technical problems such as the reaction of the two water-soluble monomers is not easy to control, and the repeatability is not good.

Method used

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  • Method for preparing ASA (Acrylonitrile-Styrene-Acrylate) copolymer latex by using water-solubility redox initiator at low temperature
  • Method for preparing ASA (Acrylonitrile-Styrene-Acrylate) copolymer latex by using water-solubility redox initiator at low temperature
  • Method for preparing ASA (Acrylonitrile-Styrene-Acrylate) copolymer latex by using water-solubility redox initiator at low temperature

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Experimental program
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Effect test

Embodiment 1

[0060] Each raw material constitutes by mass parts:

[0061]

[0062]

[0063] The preparation method is as follows:

[0064] 1) Add 0.088 parts of SDS to deionized water under the protection of nitrogen, and add 3.7 parts of BA after dispersing evenly. After stirring evenly, add 0.054 parts of KPS aqueous solution and 0.04 parts of NaHSO dropwise at the same time. 3 The aqueous solution, dripped within ten minutes, reacted at 60°C for 2h;

[0065] 2) Add 0.054 parts of KPS aqueous solution dropwise to the reaction solution in step 1), and then add the core layer monomer pre-emulsion dropwise to the reaction solution, and react at 60°C for 3 hours;

[0066] The core monomer pre-emulsion is composed of 7.4 parts of BA, 4.4 parts of St, 2.2 parts of AN, 0.74 parts of HDDA, 0.132 parts of SDS, 0.04 parts of NaHSO 3 Stir and emulsify with deionized water to obtain;

[0067] 3) Add 0.162 parts of KPS aqueous solution dropwise to the reaction solution in step 2), then add t...

Embodiment 2

[0070] Embodiment 2: comparative example—thermal decomposition initiates

[0071] Each raw material constitutes by mass parts:

[0072]

[0073] The preparation method is as follows:

[0074] 1) Add 0.088 parts of SDS into deionized water under the protection of nitrogen, disperse evenly, add 3.7 parts of BA, stir evenly, add 0.054 parts of KPS aqueous solution dropwise, finish dropping within ten minutes, and react at 75°C for 2 hours;

[0075] 2) Add 0.054 parts of KPS aqueous solution dropwise to the reaction solution in step 1), and then add the core layer monomer pre-emulsion dropwise to the reaction solution, and react at 75°C for 3 hours;

[0076] The core layer monomer pre-emulsion is obtained by stirring and emulsifying 7.4 parts of BA, 4.4 parts of St, 2.2 parts of AN, 0.74 parts of HDDA, 0.132 parts of SDS and deionized water;

[0077] 3) Add 0.162 parts of KPS aqueous solution dropwise to the reaction solution in step 2), then add the shell monomer pre-emulsio...

Embodiment 3

[0081] Each raw material constitutes by mass parts:

[0082]

[0083] The preparation method is as follows:

[0084] 1) Add 0.088 parts of SDS to deionized water under the protection of nitrogen, and add 3.7 parts of BA after dispersing evenly. After stirring evenly, add 0.054 parts of KPS aqueous solution and 0.04 parts of NaHSO dropwise at the same time. 3 The aqueous solution, dripped within ten minutes, reacted at 60°C for 2h;

[0085] 2) Add 0.054 parts of KPS aqueous solution dropwise to the reaction solution in step 1), and then add the core layer monomer pre-emulsion dropwise to the reaction solution, and react at 60°C for 3 hours;

[0086] The core monomer pre-emulsion is composed of 7.4 parts of BA, 4.4 parts of St, 2.2 parts of AN, 0.132 parts of SDS, 0.04 parts of NaHSO 3 Stir and emulsify with deionized water to obtain;

[0087] 3) Add 0.162 parts of KPS aqueous solution dropwise to the reaction solution in step 2), and then add the shell monomer pre-emulsio...

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PUM

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Abstract

The invention discloses a method for preparing ASA (Acrylonitrile-Styrene-Acrylate) copolymer latex by using a water-solubility redox initiator at low temperature. The method comprises unit processes of preparing polyacrylate seeds, preparing a polyacrylate core, preparing an ASA resin shell and post processing. The water-solubility initiator adopted by the method can initiate polymerization at a lowest temperature of 35 DEG C and reach a high conversion rate. The method has the characteristics of good repeatability, warm reaction condition, low energy consumption, easiness in operation and low price of raw materials, so that the industrial implementation is facilitated.

Description

1. Technical field [0001] The invention relates to a preparation method of acrylate-styrene-acrylonitrile ternary graft copolymer, in particular to a method for preparing ASA copolymer latex at low temperature by using a water-soluble redox initiator. 2. Background technology [0002] ASA resin, also known as AAS resin, is a graft copolymer composed of acrylate, styrene and acrylonitrile (Acrylate-Styrene-Acrylonitrile), which presents styrene acrylonitrile (SAN) resin as the continuous phase and acrylate rubber Sea-island structure of the dispersed phase. Styrene endows it with luster and processability, acrylonitrile endows it with rigidity and chemical resistance, acrylate rubber endows it with impact resistance and aging resistance, and the copolymerization of the three substances makes ASA resin have excellent performance. [0003] ASA resin was first industrialized by the German BASF company in 1968, and the trade name was Luran. ? S. In the early 1970s, Japan reali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/04C08F212/08C08F212/12C08F220/44C08F220/14C08F4/40C08F2/30C08F2/26
Inventor 史铁钧张方吴竞王启东周海鸥
Owner HEFEI UNIV OF TECH
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