| http://www.w3.org/ns/prov#value | - R1 R2 C═CR3 R4 +.tbd.Si--H→.tbd.Si--R1 R2 C--CHR3 --R4 where R1, R2 and R3 are monovalent radicals selected from the group consisting of hydrogen, one to forty carbon monovalent hydrocarbon radicals, and trifluoropropyl and R4 is a monovalent hydrocarbon radical selected from the group of monovalent radicals having the formula:
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