C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/15, 400/7218
C08G 77/16 (2006.01) C08K 5/17 (2006.01) C08K 5/5465 (2006.01) C08L 83/06 (2006.01)
Patent
CA 2002867
Abstract of the Disclosure The specification describes and claims a composition curable to an elastomer in the presence of moisture and characterised in that it comprises the product obtained by mixing (A) 100 parts by weight of a polydiorganosiloxane having at least two silicon-bonded hydroxyl groups and wherein at least 50 percent of the total organic substituents are methyl groups, (e.g. according to the general formula H(OSiR"2)XOH wherein substantially all of the groups R" are methyl groups and x is an integer having an average value from 250 to 1500), (B) from 1 to 40 parts by weight of one or more oxime silanes of the general formula R4 nSi(ON=CR'2)n wherein each R represents an alkyl group having less than 6 carbon atoms, a vinyl group, an allyl group or a phenyl group, each R' represents an alkyl group having from 1 to 6 carbon atoms or a phenyl group and n has an average value of from 2.1 to 3 and (C) from 0.1 to 1.5 parts by weight of one or more alkanolamines wherein the alkanolamine (C) is preferably a mono- hydroxy alkanolamine and is preferably 2-amino-2-methyl-1- propanol.
Dow Corning G.m.b.h.
Gowling Lafleur Henderson Llp
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