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

A technology of flame retardant resin and synthesis method, which is applied in the field of polymer emulsion preparation, can solve the problems of polymerization method discussion and slow reaction speed, achieve the effect of shortening the production cycle and making up for the low utilization rate of equipment

Active Publication Date: 2009-11-18
PETROCHINA CO LTD
View PDF9 Cites 0 Cited by
  • 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 potassium persulfate initiator, the patent pointed out that when potassium persulfate 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for synthesizing halogen substituent maleimide heat-proof flame-proof resin emulsion

Examples

Experimental program
Comparison scheme
Effect test

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 potassium persulfate 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, and 0.1 part of mercaptan into the mixing tank at 30°C, start stirring and mix to form a homogeneous monomer mixture (b) .

[0057] C. Preparation of Monomer Emulsion

[0058] Add 130 parts of desalted water, 0.35 parts of potassium persulfate, and 2.7 parts of sodium lauryl sulfate into the emulsifier at 30°C, start stirring and add (b) into the emulsifi...

Embodiment 2

[0065] A. Preparation of Primary Emulsion

[0066] Add 30 parts of desalted water, 0.3 parts of sodium lauryl sulfate, 1.0 part of acrylonitrile, and 0.15 parts of potassium persulfate into a reactor equipped with stirring at 28°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).

[0067] B. Preparation of monomer mixture

[0068] Add 30 parts of N-tribromophenylmaleimide, 44 parts of styrene, 25 parts of acrylonitrile, and 0.15 parts of mercaptan into the mixing tank at 28°C, start stirring and mix to form a homogeneous monomer mixture (b) .

[0069] C. Preparation of Monomer Emulsion

[0070] Add 130 parts of desalinated water, 0.35 parts of potassium persulfate, 1.7 parts of sodium lauryl sulfate and 1.0 part of synthetic fatty acid potassium into the emulsifier at 28°C, sta...

Embodiment 3

[0076] A. Preparation of Primary Emulsion

[0077] Add 30 parts of desalted water, 0.3 parts of sodium lauryl sulfate, 0.7 parts of styrene, 2.3 parts of acrylonitrile, and 0.1 parts of potassium persulfate into a stirred reactor at 35°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).

[0078] B. Preparation of monomer mixture

[0079] Add 30 parts of N-tribromocyclohexylmaleimide, 44 parts of styrene, 23 parts of acrylonitrile, and 0.12 parts of mercaptan into the mixing tank at 35°C, start stirring and mix to form a homogeneous monomer mixture (b) .

[0080] C. Preparation of Monomer Emulsion

[0081] Add 130 parts of desalted water, 0.35 parts of potassium persulfate, 1.7 parts of sodium lauryl sulfate and 1.0 part of synthetic fatty acid potassium into the emulsifier at 3...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
Vicat softening pointaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to view more

Abstract

A method for synthesizing a halogen substituent maleimide heat-resistant flame-retardant resin emulsion, which is divided into four parts, and its composition and operating conditions are: adding emulsifier, part of aryl vinyl monomers, nitrile vinyl monomers, initiators, etc., emulsified to form a primary emulsion (a); the halogen substituent maleimide monomers, the rest of the Add the monomer into the mixing tank to form a homogeneous monomer mixture (b); add desalted water, initiator, emulsifier, (b) into the emulsifier for emulsification to form a monomer emulsion (c); (a) form After that, (c) is added to the reactor and mixed with (a) for polymerization. The obtained heat-resistant and flame-retardant resin emulsion has the advantages of good appearance, uniform composition and structure, high heat resistance, flame retardancy, and high yield in the polymerization process, and can be widely used in heat-resistant and flame-retardant materials such as ABS, PC, and PBT. modification. Used alone, it can also be used to prepare highly flame-retardant and heat-resistant parts for automobiles and household appliances.

Description

technical field [0001] The invention relates to a method for preparing a polymer emulsion, in particular to a method for synthesizing a halogen substituent maleimide heat-resistant and 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 alloy method mainly refers to the PC / ABS alloy. The copolymerization modification method is mainly composed of two par...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/40C08F212/10C08F2/24C08F4/40C08J3/03C07D207/448
Inventor 荔栓红邵卫桂强梁滔任美红赵继忠张守汉李晶
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap