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

A technology of flame retardant resin and imide, which is applied in the field of preparation of heat-resistant flame retardant resin emulsion, can solve the problems of no polymerization method and slow reaction speed, and achieve uniform composition and structure, stable reaction process and high yield Effect

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

AI Technical Summary

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 preparing halogen substituent maleimide heat-proof flame-proof resin emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A. Preparation of monomer mixture

[0051] Add 30 parts of N-tribromophenylmaleimide, 45 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 (a).

[0052] B. Preparation of Monomer Emulsion

[0053] Add 130 parts of desalted water and 3.0 parts of sodium lauryl sulfate into the emulsifier at 30°C, start stirring and add (a) into the emulsifier for emulsification. After emulsification for 33 minutes, monomer emulsion (b) was obtained. Its pH was determined to be 9-10.

[0054] C. Preparation of heat-resistant and flame-retardant resin emulsion

[0055] Add 30 parts of water into the reactor, and after the temperature rises to 79°C, immediately add (b) into the reactor continuously and uniformly and keep the temperature of the system at 80°C to carry out the polymerization reaction. Control the feed rate of (b) so that it i...

Embodiment 2

[0061] A. Preparation of monomer mixture

[0062] Add 30 parts of N-tribromophenylmaleimide, 45 parts of styrene, 25 parts of acrylonitrile, 0.35 parts of azobisisobutyronitrile, and 0.15 parts of mercaptan into the mixing tank at 35°C, start stirring and mix to form Homogeneous monomer mixture (a).

[0063] B. Preparation of Monomer Emulsion

[0064] Add 130 parts of desalted water, 2.2 parts of sodium lauryl sulfate and 1.0 part of synthetic fatty acid potassium into the emulsifier at 35°C, start stirring and add (a) into the emulsifier for emulsification. After emulsification for 34 minutes, monomer emulsion (b) was formed. Its pH was determined to be 9-10.

[0065] C. Preparation of heat-resistant and flame-retardant resin emulsion

[0066] Add 30 parts of water into the reactor, and after its temperature rises to 77°C, immediately add (b) into the reactor continuously and evenly to mix with (a) and maintain the temperature of the system at 80°C for polymerization. Co...

Embodiment 3

[0070] A. Preparation of monomer mixture

[0071] Add 30 parts of N-tribromocyclohexylmaleimide, 45 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 (a).

[0072] B. Preparation of Monomer Emulsion

[0073] Add 130 parts of desalted water, 1.7 parts of sodium lauryl sulfate and 1.0 part of synthetic fatty acid potassium into the emulsifier at 30°C, start stirring and add (a) into the emulsifier for emulsification. After emulsification for 31 minutes, monomer emulsion (b) was obtained. Its pH was determined to be 9-10.

[0074] C. Preparation of heat-resistant and flame-retardant resin emulsion

[0075] Add 30 parts of water into the reactor, and after its temperature rises to 79°C, immediately add (b) into the reactor continuously and evenly to mix with (a) and maintain the temperature of the system at 85°C for polymerization....

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Abstract

The present invention is a preparation method for a halogen substitute maleimide Imide-like anti-heat flame-retardant resin emulsion. The halogen substitute maleimide Imide monomer, aryl vinyl monomer, cyano-ethylene monomer and other initiators are added into a mixing trough, and are mixed and stirred to generate homogeneous monomer mixture (a); emulsifier and other agent are added into a emulsifier, wherein (a) is also added for emulsification so as to generate monomer emulsion (b); desalination water and (b) are added to a reactor for added to the reactor polymerization reaction at the temperature of 60 DEG C to 90 DEG C; then anti-heat flame-retardant resin emulsion (c) is obtained. The anti-heat flame-retardant 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 preparation method of a heat-resistant flame-retardant resin emulsion, in particular to a preparation method of a halogen substituent maleimide heat-resistant flame-retardant resin emulsion. Background technique [0002] The free radical copolymer of maleimide monomers with halogen substituents, because of the planar five-membered ring structure in the molecular chain, can effectively inhibit the rotation of the chain, so it has high structural rigidity and thermal stability. The molecular chain contains halogen, and has good flame retardancy on the basis of heat resistance, 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 part is th...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F222/10C08F4/04C08F4/32C08F2/24
Inventor 荔栓红王永峰桂强梁滔翟云芳于奎葛蜀山周建
Owner PETROCHINA CO LTD
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