C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
117/47.3
C08F 214/26 (2006.01) C08F 216/14 (2006.01) C08F 259/08 (2006.01)
Patent
CA 1293892
Abstract: The present invention is directed to a modified PTFE fine powder which comprises primary particles having an average particle size of 0.1 to 0.6 µm and contains 0.01 to 0.15% by weight, based on the whole weight of the particles, of at least one olefinically unsaturated compound selected from the group consisting of a fluoroalkyl vinyl ether of the formula: X(CF2)nOCF=CF2 (I) wherein X is a hydrogen atom, a fluorine atom or a chlorine atom and n is an integer of 1 to 6, and a fluoroalkyl vinyl ether of the formula: C3F7(OCF2CF2CF2)m[OCF(CE3)CF2]?OCF=CF=2 (II) wherein m is an integer of 0 to 2 and ? is an integer of 0 to 2 mainly in the core parts of the particles and 0.04 to 0.25% by weight, based on the whole weight of the particles, of chlorotrifluoroethylene in the shell parts, The modified PTFE fine powder of the present invention has good paste extrudability and heat stability.
545303
Hosokawa Kazutaka
Shimizu Tetsuo
Daikin Industries Ltd.
Kirby Eades Gale Baker
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