| 摘要 |
The present organopolysiloxane composition comprises (A) an organopolysiloxane in which 5 to 30 mol % of the molecule ends is made up of an (R1)3Si0.5 unit and 95 to 70 mol % of the molecule ends is made up of at least one unit selected from the group consisting of an R1(R2)2SiO0.5 unit, an (R1)2R2SiO0.5 unit, and an (R2)3SiO0.5 unit, in which units R1 represent a vinyl group and R2 represents a hydrocarbon group excluding aliphatic unsaturated groups, (B) an organohydrogenpolysiloxane having two or more Si-H groups in the molecule, and (C) an addition reaction catalyst. By curing this composition, a gel cured product having high resistance to poisoning by solder fluxes can be obtained.
|
