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A kind of preparation method of anti-dripping agent

A technology of anti-dripping agent and initiator, which is applied in the field of preparation of anti-dripping agent, can solve problems such as easy aggregation of PTFE particles, and achieve the effect of improving anti-dripping performance and improving compatibility

Active Publication Date: 2018-12-07
上海普信高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The stability of the PTFE dispersion of the above disclosed technology is usually lower than that of other polymer emulsions, and the disadvantage that PTFE particles are easy to agglomerate will appear when subjected to greater shear

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Step 1. Preparation of water phase

[0016] In parts by weight, add 1000 parts of water and 1 part of sodium perfluoroalkane sulfonate into the reactor, and stir evenly;

[0017] Step 2. Preparation of oil phase

[0018] In parts by weight, 100 parts of polytetrafluoroethylene micropowder, 3.5 parts of 3,3-difluoroallyl bromide, 0.22 parts of 2,6-diisopropyl benzimide new value diene dihexyl tert-butanol Molybdenum, 0.34 parts of 4,5-difluoro-2,2-bis(trifluoromethyl)-1,3-dioxole, and then add 3 parts of peroxide initiator, and stir evenly.

[0019] Step 3. Polymerization

[0020] Add the oil phase solution to the reaction kettle equipped with the prepared water phase in step 1, and then react at 90°C for 16 hours. After the reaction is completed, discharge the material and dry to obtain the product. The code is M-1

Embodiment 2

[0022] Step 1. Preparation of water phase

[0023] In parts by weight, add 1000 parts of water and 0.5 part of potassium perfluorooctanoate into the reactor, and stir evenly;

[0024] Step 2. Preparation of oil phase

[0025] In parts by weight, 100 parts of polytetrafluoroethylene micropowder, 1 part of 3,3-difluoroallyl bromide, 0.1 part of 2,6-diisopropyl benzimide, new value diene dihexyl tert-butanol Molybdenum, 0.1 part of 4,5-difluoro-2,2-bis(trifluoromethyl)-1,3-dioxole, and then add 2 parts of peroxide initiator and stir evenly.

[0026] Step 3. Polymerization

[0027] Add the oil phase solution to the reaction kettle equipped with the prepared water phase in step 1, react at 70°C for 20 hours, discharge the material after the reaction, and dry to obtain the product, numbered M-2

Embodiment 3

[0029] Step 1. Preparation of water phase

[0030] In parts by weight, add 1000 parts of water and 2 parts of ammonium perfluorooctanoate into the reactor, and stir evenly;

[0031] Step 2. Preparation of oil phase

[0032] In parts by weight, 100 parts of polytetrafluoroethylene micropowder, 5 parts of 3,3-difluoroallyl bromide, 0.5 parts of 2,6-diisopropyl benzimide, new value diene dihexyl tert-butanol molybdenum, 0.5 parts of 4,5-difluoro-2,2-bis(trifluoromethyl)-1,3-dioxole, and then add 5 parts of peroxide initiator and stir evenly.

[0033] Step 3. Polymerization

[0034] Add the oil phase solution to the reaction kettle equipped with the prepared water phase in step 1, react at 110°C for 10 hours, discharge the material after the reaction, and dry to obtain the product, numbered M-3

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Abstract

The invention provides a preparation method for a rare earth anti-dripping agent. A copolymer of 3,3-difluoroallyl bromide, 2,6-DIISOPROPYLPHENYLIMI, and 4,5-difluoro-2,2-di(trifluoromethyl)-1,3-dioxol is introduced to a polytef framework, so that the anti-dripping property is improved.

Description

technical field [0001] The invention relates to a preparation method of an anti-dripping agent, in particular to a preparation method of an anti-dripping agent. Background technique [0002] In order to improve the anti-dripping properties of thermoplastic resin materials, anti-dripping agents are usually added to thermoplastic resin materials to improve the flame-retardant and anti-dripping properties of thermoplastic resins when they burn. Recently, the use of fluorine-containing resins with a tendency to fibrillation as anti-dripping agents has become the mainstream of development, and there have been various attempts to use fluoropolymers to improve the flame-retardant and anti-drip properties of synthetic resins. Anti-drip agents containing polytetrafluoroethylene are the most common. The polymerization technology of preparing polytetrafluoroethylene anti-dripping agent is mainly to form particles through thermal polymerization reaction of core emulsion and shell monom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F259/08C08F214/18C08F234/02C08K5/56C08L23/12C08L51/00
CPCC08F259/08C08K5/56C08L23/12C08L2201/02C08F214/182C08F234/02C08L51/003
Inventor 王荣军吴健泳
Owner 上海普信高分子材料有限公司
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