Thermoprocessable copolymers of TFE

Details Thermoprocessable copolymers of TFE Thermoprocessable copolymers of TFE

2005-09-06

2005-09-06

Eashoo, Mark (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

C264S331140

Reexamination Certificate

active

06939495

ABSTRACT:
A thermoprocessable copolymer of TFE essentially formed by:(a) from 4.5 to 8.5% by weight of perfluoromethylvinylether (PMVE);(b) from 0.3 to 1.6% by weight of a perfluorodioxole of formula:wherein: Y=F, ORf, Rfwherein Rfis a perfluoroalkyl having from 1 to 5 carbon atoms;X1and X2, equal to or diferent from each other, are —F or —CF3;(c) TFE, forming the remaining part to 100%.

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“End Groups in Fluoropolymers”, Pianca et al, Journal of Fluoride Chemistry 95, 1999, pp 71-84.

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