Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole

Details Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole Amorphous copolymers of perfluoro-2,2-dimethyl-1,3-dioxole

C - Chemistry, Metallurgy

08

F

154/140, 117/198

C08F 234/02 (2006.01) C08F 210/00 (2006.01) C08F 214/26 (2006.01)

Patent

CA 1306827

TITLE AMORPHOUS COPOLYMERS OF PERFLUORO-2,2- DIMETHYL-1,3-DIOXOLE ABSTRACT OF THE DISCLOSURE Amorphous copolymers of perfluoro-2,2- dimethyl-1,3-dioxole with at least one fluoro comono- mer selected from one or more of ten defined classes having a recited minimum mole proportion of perfluoro- 2,2-dimethyl-1,3-dioxole, in no event less than 65%, have high glass transition temperatures of 140°C or higher, low indices of refraction, and good physical properties, and low dielectric constants, which make them suitable for cladding optical fibers as well as for many electronics applications, including the manufacture of substrates for circuit boards. They all are soluble at room temperature in perfluoro(2- butyltetrahydrofuran), which makes it practical to apply them as coatings from solution. AD-5206-C

569387

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