Patent ID: 6930194

Claim:
A siloxane bischloroformate comprising structure IX and comprising fewer than 10 percent hydroxy endgroups wherein R 1 is independently at each occurrence a C 1 -C 10 alkylene group optionally substituted by one or more C 1 -C 10 alkyl or aryl groups, an oxygen atom, an oxyalkyleneoxy moiety —O—(CH 2 ) t —O—, or an oxyalkylene moiety —O—(CH 2 ) t —, where t is an integer from 2-20; R 2 and R 3 are each independently at each occurrence, halogen, C 1 -C 6 alkoxy, C 1 -C 6 alkyl, or C 6 -C 10 aryl; z and q are independently integers from 0-4; R 4 , R 5 , R 6 and R 7 are each independently at each occurrence C 1 -C 6 alkyl, aryl, C 2 -C 6 alkenyl, trifluoropropyl, or styrenyl; and p is an integer from 1 to about 100.