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Method for synthesizing halogen substituent maleimide heat-proof flame-proof resin emulsion

A synthesis method and heat-resistant resin technology, which is applied in the field of halogen-substituent maleimide heat-resistant flame-retardant resin emulsion synthesis, can solve the problems of no polymerization method and slow reaction speed, and achieve uniform composition and structure, and easy Controlling and resolving unstable effects

Active Publication Date: 2008-03-12
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] US4757109 describes a process for synthesizing styrene, acrylonitrile, and maleimide terpolymers by emulsion polymerization, using an anionic emulsifier with good emulsifying ability in the range of pH 3 to 9, and the initiator adopts Redox system or azobisisobutyronitrile initiator, the patent pointed out that when azobisisobutyronitrile initiator is used, the reaction speed is slow, and the polymerization process is relatively simple, and there is no special discussion on the polymerization method

Method used

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  • Method for synthesizing halogen substituent maleimide heat-proof flame-proof resin emulsion

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preparation example Construction

[0050] Preparation of emulsion of additives:

[0051] 5.0% potassium oleate soap, 10% antioxidant 1076, 5% plasticizer dibutyl phthalate and 80% desalted water are prepared in an emulsification tank at 75°C to prepare an emulsion of additives.

Embodiment 1

[0053] A. Preparation of Primary Emulsion

[0054] Add 30 parts of desalted water, 0.3 parts of sodium lauryl sulfate, 0.7 parts of styrene, 0.3 parts of acrylonitrile, and 0.1 parts of azobisisobutyronitrile into a stirred reactor at 30°C, and start stirring for emulsification. After 30 minutes of emulsification, the temperature of the water phase in the reactor was raised to 78° C. within 30 minutes, and kept at a constant temperature for 10 minutes to form the primary emulsion (a).

[0055] B. Preparation of monomer mixture

[0056] Add 30 parts of N-tribromophenylmaleimide, 44 parts of styrene, 25 parts of acrylonitrile, 0.35 parts of azobisisobutyronitrile, and 0.1 part of mercaptan into the mixing tank at 30°C, start stirring and mix to form Homogeneous monomer mixture (b).

[0057] C. Preparation of Monomer Emulsion

[0058] Add 130 parts of desalted water and 2.7 parts of sodium lauryl sulfate into the emulsifier at 30°C, start stirring, and add (b) into the emulsif...

Embodiment 2

[0066] A. Preparation of Primary Emulsion

[0067] Add 30 parts of desalted water, 0.3 parts of sodium dodecylbenzenesulfonate, 0.7 parts of styrene, 0.3 parts of acrylonitrile, and 0.1 parts of azobisisobutyronitrile into a stirred reactor at 30°C, and start stirring for emulsification . After 30 minutes of emulsification, the temperature of the water phase in the reactor was raised to 78° C. within 30 minutes, and kept at a constant temperature for 10 minutes to form the primary emulsion (a).

[0068] B. Preparation of monomer mixture

[0069] Add 30 parts of N-tribromophenylmaleimide, 44 parts of styrene, 25 parts of acrylonitrile, 0.35 parts of azobisisobutyronitrile, and 0.1 part of mercaptan into the mixing tank at 30°C, start stirring and mix to form Homogeneous monomer mixture (b).

[0070] C. Preparation of Monomer Emulsion

[0071] Add 130 parts of desalted water, 1.7 parts of sodium lauryl sulfate and 1.0 part of synthetic fatty acid potassium into the emulsifie...

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Abstract

The present invention is a preparation method for a halogen substitute maleimide Imide-like anti-heat resin emulsion: a reactor is added with emulsifier, some aryl vinyl monomer, cyano-ethylene monomer, and oil-soluble thermal decomposition initiator and other agents for emulsification so as to generate primary emulsion (a); the remained maleimide monomer, aryl vinyl monomer, cyano-ethylene monomer, and oil-soluble thermal decomposition initiator and other agents are added into a mixing trough so as to generate homogeneous monomer mixed liquid(b); the emulsifier and (b) are added into the emulsifier and are stirred for emulsion so as to generate monomer emulsion (c); the monomer emulsion (c) is added into the reactor to mix with (a) for polymerization reaction which generates heat-resistant polymer resin emulsion (d). The anti-heat resin emulsion obtained by the present invention has the advantages of good appearance, even composition and structure, high heat-resistant effectiveness, high fire-retardant and polymerization efficiency and so on. The anti-heat flame-retardant resin emulsion can be widely used in the improvement of anti-heat and flame-retardant effectiveness of ABS, PC, PBT and other materials. When used alone, the anti-heat flame-retardant resin emulsion can also be used in the anti-heat and flame-retardant components of automobiles and domestic appliances.

Description

technical field [0001] The invention relates to a method for synthesizing a heat-resistant and flame-retardant resin emulsion, in particular to a method for synthesizing a halogen-substituted maleimide heat-resistant and flame-retardant resin emulsion. Background technique [0002] The free radical copolymer of halogen substituent maleimide monomer, because of its molecular chain contains a planar five-membered ring structure, can effectively inhibit the rotation of the chain, so it has high structural rigidity and thermal stability, and, because the molecular The chain contains halogen groups and has good flame retardant properties, so it has attracted widespread attention. [0003] The preparation of heat-resistant and flame-retardant ABS resin includes alloy method and copolymerization modification method, among which copolymerization modification method is a better technical route. The copolymerization modification method is mainly composed of two parts technology, one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F257/02C08F267/08C08F2/24C08F4/04C08F222/40
Inventor 荔栓红邵卫王永峰梁滔李晶张守汉赵继忠郑聚成
Owner PETROCHINA CO LTD
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