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Suspension particle comprising tetrafluoroethylene polymer and manufacturing method thereof

A technology of polymers and granules, which can be used in tableware, applications, coatings, etc., and can solve problems such as complex processes

Inactive Publication Date: 2008-03-05
朴志浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this process involves emulsion polymerizing tetrafluoroethylene to first obtain PTFE latex, adding monomers to the obtained PTFE latex, polymerizing the resulting mixture to obtain a latex product again, and salting out the resulting latex product to enlarge the particles The resulting latex is used in powder form, so the process is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 27 kg of styrene, 3 kg of acrylonitrile and 210 g of benzoyl peroxide were introduced into a reaction containing 75 kg of deionized water and 50 kg of L-Teflon (commercially available under the trade name FR 301B; solids content: 60%) container, and stir the mixture. Add 1.2 kg of hydroxyapatite and 80 g of sodium alkylbenzene sulfonate to the stirred mixture and stir at 300 RPM. Polymerization of the compounds was terminated by heating the contents of the reactor to 75°C and maintaining that temperature for 7 hours, then heating to 120°C and maintaining that temperature for 3 hours. The aqueous phase was removed to yield uniform pellets with an average diameter of 1.1 mm. The resulting pellets were dried using a fan air heater.

Embodiment 2

[0045] 27 kg of styrene, 3 kg of acrylonitrile and 210 g of benzoyl peroxide were introduced into a reaction containing 75 kg of deionized water and 50 kg of L-Teflon (commercially available under the trade name FR 301B; solids content: 60%) container, and stir the mixture. 78 g of polyvinyl alcohol (Dongyang steel chemical Co., Ltd.) and 80 g of sodium alkylbenzenesulfonate were added to the stirred mixture and stirred at 400 RPM. Polymerization of the compounds was terminated by heating the contents of the reactor to 75°C and maintaining that temperature for 7 hours, then heating to 120°C and maintaining that temperature for 3 hours. The aqueous phase was removed to yield uniform pellets with an average diameter of 0.8 mm. The resulting pellets were dried using a fan air heater.

Embodiment 3

[0047] 27 kg of styrene, 9 kg of acrylonitrile and 210 g of benzoyl peroxide were introduced into a reaction containing 75 kg of deionized water and 50 kg of L-Teflon (commercially available under the trade name FR 301B; solids content: 60%) container, and stir the mixture. Add 1.2 kg of hydroxyapatite and 80 g of sodium alkylbenzene sulfonate to the stirring mixture and stir at 300 RPM. Polymerization of the compounds was terminated by heating the contents of the reactor to 75°C and maintaining that temperature for 7 hours, then heating to 120°C and maintaining that temperature for 3 hours. The aqueous phase was removed to yield uniform pellets with an average diameter of 1.8 mm. The resulting pellets were dried using a fan air heater.

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Abstract

Disclosed therein is method for preparing novel suspension polymer comprising tetrafluoroethylene polymer, and powders or granules produced by the method. The suspension polymer of the present invention can be obtained by suspension polymerization of a styrene-based monomer, an acrylic monomer or a mixed monomer thereof in the presence of PTFE, followed by filtering and drying, and can be used as flame retarding properties improver of engineering plastic and the like.

Description

technical field [0001] The present invention relates to a novel suspension polymer (suspension polymer) comprising tetrafluoroethylene polymer (hereinafter referred to as "PTFE") and its production method, and more particularly relates to the suspension polymerization of styrene-based polymers by water in the presence of PTFE. Production method of powder or granules produced from monomers, acrylic monomers or their mixed monomers. Background technique [0002] Engineering plastics such as ABS / PC, PC, PBT, Noryl, nylon, etc. have been used in various household appliances and electrical materials. If such a product is used, the flame retardancy of the product is considered important in the event of a fire. Among these, the drip phenomenon, in which partially molten products fall with combustion, is particularly problematic. In order to prevent this dripping phenomenon, that is, to provide anti-dripping properties, various methods have been developed. One of them employs PTF...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/00
CPCC08F259/08C08F114/26C08L55/02C09D151/003C08F290/00C08F14/26C08L51/003C08F2/00C08L2666/02C08L2666/24A47G21/04A47G21/02A47G21/06A47G21/103
Inventor 朴志浩
Owner 朴志浩
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