| 摘要 |
An alkoxy endblocked polydiorgansiloxane of the formula Z-(SiR2O)nSiR2-Z where Z is (* CHEMICAL STRUCTURE *) (Group I) or (* CHEMICAL STRUCTURE *) (Group II) where Y is Ra(R'O)(3-a)Si-, X is (* CHEMICAL STRUCTURE *) (* CHEMICAL STRUCTURE *) (* CHEMICAL STRUCTURE *) (* CHEMICAL STRUCTURE *) (* CHEMICAL STRUCTURE *) in which a is 0 or 1, d has a value of 1 to 3 inclusive, v is 0 or 1, n<=8, p has a value of 3 to 6 inclusive, q has a value of 2 to 6 inclusive, r has a value of 4 to 6 inclusive, w is 0 or 1, Me is methyl, R1 is an alkyl radical having from 1 to 6 inclusive carbon atoms, each R is a monovalent radical independently selected from the group consisting of hydrocarbon radicals and halogenated hydrocarbon radicals, R' is an alkyl radical of 1 to 3 inclusive carbon atoms, R" is a divalent hydrocarbon radical selected from the group consisting of -(CH2)b- and -CH(Me)(CH2)c-, b is from 2 to 6 inclusive, c is from 0 to 4 inclusive, the bond at ** is attached to the silicon atom Si*, can be used as the base polymer for making one package room temperature vulcanizable silicone elastomer compositions by combining it with alkoxysilane, titanium catalyst and filler. These RTV's cure rapidly and exhibit adhesion to substrates upon which they are cure.
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