METHOD OF PRODUCING POLYTETRAFLUOROETHYLENE PARTICLES Russian patent published in 2025 - IPC C08J3/12 C08F14/26 B29B13/06 B29B9/16 C08F6/24 C08J5/00 

Abstract RU 2837692 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing polytetrafluoroethylene particles. Disclosed is a method of producing polytetrafluoroethylene particles, comprising carrying out suspension polymerisation for tetrafluoroethylene in an aqueous medium to obtain suspension-polymerised polytetrafluoroethylene particles, washing, and then crushing the suspension-polymerised particles or crushing the suspension-polymerised particles with washing to obtain crushed particles, dehydration of crushed particles to obtain crushed particles characterized by a water content of 40 wt.% or less, and conducting heat treatment for dehydrated crushed particles to produce polytetrafluoroethylene particles; methods of producing a polytetrafluoroethylene moulded article and a polytetrafluoroethylene compression moulded article, including the disclosed method of producing polytetrafluoroethylene particles.

EFFECT: production of polytetrafluoroethylene particles characterized by a weakened sour smell.

16 cl, 3 tbl, 6 ex

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RU 2 837 692 C2

Authors

Tanaka, Takayuki

Miyamoto, Masayoshi

Minamiyama, Tomoki

Kusunoki, Takeki

Taira, Takahiro

Yamabe, Takuya

Yoshida, Hirotoshi

Kato, Taketo

Yamanaka, Taku

Tsukamoto, Mitsuo

Dates

2025-04-03Published

2022-06-30Filed