| 摘要 |
Novel organopolysiloxanes are disclosed which comprise <IMAGE> <IMAGE> <IMAGE> <IMAGE> wherein R1 is methyl or phenyl, with the proviso that at least 90% of R1 is methyl; and R2 is (a) R1, (b) linear or branched alkinoxy with 3 to 25 carbon atoms, or (c) a polyalcohol with 2 to 6 hydroxyl groups from which the H-atom of the OH-groups is eliminated, with all but one of the OH-groups being etherified with allyl alcohol. The siloxanes must meet the conditions that at least one-C 3BOND C- group is contained in the average molecule and that the numerical ratio of the -C 3BOND C- group to the allyl ether groups is 5:1 to 1:250. The novel organopolysiloxanes, mixed with hydrogenpolysiloxanes and a catalyst, are stable at room temperatures and cure rapidly at elevated temperatures. The cured mixtures have adhesive properties and exhibit no malfunctions due to migration of portions not linked chemically. A process for preparing the organopolysiloxanes is also disclosed.
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