Method of preparing low-temperature-cure polymer composition
A method of preparing a composition containing a fluorocarbon thermoplastic random copolymer comprising the steps of:(A) providing a mixture having:(i) a fluorocarbon thermoplastic random copolymer having subunits of:&#8212;(CH2CF2)x&#8212;, &#8212;(CF2CF(CF3)y&#8212;, and &#8212;(CF2 CF2)z&#8212;,&#8195;whereinx is from 1 to 50 or 60 to 80 mole percent,y is from 10 to 90 mole percent,z is from 10 to 90 mole percent,x+y+z equals 100 mole percent;(ii) a filler comprising zinc oxide;(iii) a curable amino functional polydimethyl siloxane copolymer comprising aminofunctional units selected from the group consisting of (aminoethylaminopropyl) methyl, (aminopropyl) methyl and (aminopropyl) dimethyl; and(iv) antimony-doped tin oxide particles;(v) a bisphenol residue curing agent; and(B) curing the mixture for 5 to 10 hours at a temperature in the range of 25&deg; C. to 275&deg; C.
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Joseph A. Charles C. Robert A. Jiann H.
Pavlisko Anderson Lancaster Chen