Polyorganosiloxanes having at least one organofunctional group w

Details Polyorganosiloxanes having at least one organofunctional group w Polyorganosiloxanes having at least one organofunctional group w

1998-12-21

2000-10-03

Moore, Margaret G.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 37, 528 31, 528 32, 528 15, 556458, 556464, C08G 2718

Patent

active

061275026

ABSTRACT:
A polyorganosiloxane comprising at least one organofunctional group per molecule having multiple hydrolyzable groups. The organofunctional group is described by formula --Z.sub.b --R.sup.4 (Z--SiR.sup.2.sub.n X.sub.3-n).sub.a, where each R.sup.2 is an independently selected monovalent hydrocarbon radical comprising 1 to about 18 carbon atoms; each Z is independently selected from the group consisting of divalent hydrocarbon radicals comprising about 2 to 18 carbon atoms and a combination of divalent hydrocarbon radicals and siloxane segments; R.sup.4 is independently selected from the group consisting of a silicon atom and a siloxane radical comprising at least two silicon atoms and each Z is bonded to a silicon atom of R.sup.4 with the remaining valences of the silicon atoms of R.sup.4 being bonded to a hydrogen atom, a monovalent hydrocarbon radical comprising 1 to about 18 carbon atoms, or forming siloxane bonds; each X is independently selected from the group consisting of halogen, alkoxy, acyloxy, and ketoximo; n is 0, 1, or 2; a is at least 2; and b is 0 or 1, provided, when b is 0, R.sup.4 is bonded to the polyorganosiloxane through a siloxane bond.

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