Silynorbornane anhydrides and method for making

Monoanhydrides of the formula, ##STR19## where R-R.sup.5 are are a members selected from hydrogen, halogen, C.sub.(1-13) monovalent hydrocarbon radical and substituted C.sub.(1-13) monovalent hydrocarbon radicals, R.sup.6 is a member selected from C.sub.(6-13) monovalent hydrocarbon radicals, and substituted C.sub.(6-13) monovalent hydrocarbon radicals, X is a hydrolyzable radical selected from halo, hydrogen, C.sub.(1-8) alkoxy, acyloxy, --N(R.sup.7).sub.2, cyano, hydrogen, amido, carbamato, enoxy, imidato, isocyanato, oximato, isocyanate, oximato, thioisocyanato and ureido, R.sup.7 is selected from monovalent hydrocarbon radicals Z is selected from --O--and C--(R).sub.2, and a is a whole number equal to 0 to 3 inclusive.

The compound ##STR20##

The compound ##STR21##

The compound ##STR22##

The compound ##STR23##

The compound ##STR24##

The compound ##STR25##

The compound ##STR26##

The compound ##STR27##

The compound ##STR28##

Dianhydrides of the formula, ##STR29## where R-R.sup.5 is selected from hydrogen, halogen, C.sub.(1-13) monovalent hydrocarbon radical and substituted C.sub.(1-13) monovalent hydrocarbon radicals, R.sup.6 is a member selected from C.sub.(1-13) monovalent hydrocarbon radicals and substituted C.sub.(1-13) monovalent hydrocarbon radicals and Z is selected from --O-- and --C(R).sub.2 --.

The compound ##STR30##

Dianhydride terminated polydiorganosiloxanes of the formula, ##STR31## where R-R.sup.5 are selected from hydrogen halogen, C.sub.(1-13) monovalent hydrocarbon radicals and substituted C.sub.(1-13) monovalent hydrocarbon radicals, R.sup.6 is selected from C.sub.(1-13) monovalent hydrocarbon radicals and substituted C.sub.(1-13) monovalent hydrocarbon radicals, Z is selected from --O-- and --C(R).sub.2 --, and n is an integer equal to 1 to 2000 inclusive.

Dianhydride terminated polydiorganosiloxane of the formula, ##STR32## where R-R.sup.5 are members selected from hydrogen and a C.sub.(1-8) alkyl radical, R.sup.6 is selected from a C.sub.(1-13) monovalent hydrocarbon radical and substituted C.sub.(1-13) monovalent hydrocarbon, Z is selected from --O-- and --C(R).sub.2 --, n is an integer equal to 1 to 2000 inclusive, m is an integer equal to 0 to 100 inclusive and the sum of n+m is equal to 2 to 2000 inclusive.

Silyl polynorbornane anhydrides having the formula, ##STR33## R-R.sup.5 are members selected from hydrogen and a C.sub.(1-8) alkyl radical, R.sup.6 is selected from a C.sub.(1-13) monovalent hydrocarbon radical and substituted C.sub.(1-13) monovalent hydrocarbon, Z is selected from --O-- and --C(R).sub.2 --, X is a hydrolyzable radical selected from halo, hydrogen, C.sub.(1-8) alkoxy, acyloxy, --N(R.sup.7).sub.2, cyano, hydrogen, amido, carbamato, enoxy, imidato, isocyanato, oximato, isocyanate, oximato, and thioisocyanato, d is equal to 0 or 1, e is equal to 0 to 2 and the sum of d+e is equal to 1 or 2.

A method for making silylnorbornane anhydrides included within formula (1) which comprises effecting reaction between norbornene anhydride of the formula, ##STR34## with a silane of the formula, ##STR35## in the presence of an effective amount of a platinum catalyst, where X is a member selected from the class consisting of,

• (a) a hydrolyzable radical selected from the class consisting of halo, hydrogen, C.sub.(1-8) alkoxy, acyloxy, --N(R.sup.6).sub.2, cyano, hydrogen, amido, amino, carbamato, enoxy, imidato, isocyanato, oximato, isocyanate, oximato, thioisocyanato and ureido,
• (b) siloxanes having the formula, ##EQU3## (c) polysiloxanes having the formula, ##STR36## where R-R.sup.5 are members selected from hydrogen and C.sub.(1-8) alkyl, R.sup.6 is selected from a C.sub.(1-13) monovalent hydrocarbon radical and substituted C.sub.(1-13) monovalent hydrocarbon, Y is selected from a radical having the formula, ##STR37## and (a) radicals, Y.sup.1 is selected from R.sup.6 radicals, Y radicals and mixtures thereof, Z is selected from --O-- and C--(R).sub.2, a is a whole number equal to 0 to 3 inclusive, b is a whole number equal to 0 to 3 inclusive, c is a whole number equal to 0 to 3 inclusive, the sum of b+c is equal to 0 to 3 inclusive, and n is an integer equal to 1 to 2000 inclusive.

A method for making dianhydride terminated polydiorganosiloxane which comprises equilibrating an anhydride terminated diorganosiloxane of the formula, ##STR38## with a cyclopolydiorganosiloxane of the formula, ##STR39## in the presence of an acid catalyst, where where R-R.sup.5 are members selected from hydrogen and C.sub.(1-8) alkyl, R.sup.6 is selected from a C.sub.(1-13) monovalent hydrocarbon radical and substituted C.sub.(1-13) monovalent hydrocarbon, Z is selected from --O-- and C--(R).sub.2, and m' has a value of 3 to 6 inclusive.