C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
402/18, 260/365.
C07F 7/18 (2006.01) C08G 77/14 (2006.01) C08G 77/20 (2006.01) C08G 77/38 (2006.01)
Patent
CA 2022991
Anhydride-functional organo(poly)siloxanes having average units of the general formula Image (I), in which the R(s) are the same or different and represent a monovalent hydrocarbon radical or a monovalent halogenated hydrocarbon radical having from 1 to 18 carbon atom(s) per radical, A represents a radical of the formula Image and/or Image in which R1 represents a hydrogen atom or a monovalent hydro- carbon radical or a monovalent halogenated hydrocarbon radi- cal having from 1 to 12 carbon atom(s) per radical and R2 represents a hydrogen atom or a monovalent hydrocarbon radi- cal having from 1 to 12 carbon atom(s) per radical, or the two radicals R and R2 together represent a divalent hydro- carbon radical having from 3 to 5 carbon atoms per radical, R3 represents a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 4 carbon atom(s) per radical, with the proviso that R3 is a hydrogen atom if the two radicals R1 and R2 together represent a divalent hydrocarbon radical having from 3 to 5 carbon atoms per radical, R4, which may be the same or different, represent a hydrogen atom, a halogen atom or a cyano radical, a is 0 or 1, with an average of from 0.003 to 1.0, b is 0, 1, 2 or 3, with an average of from 0.05 to 2.5, and the sum of a+b is an average which is not greater than 3, with the proviso that at least one A radical is present per molecule.
Esterbauer Josef
Herzig Christian
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Wacker-Chemie G.m.b.h.
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