| abstract |
Disclosed is a polysiloxane which is in a liquid form having a low viscosity. This polysiloxane has excellent curability, and a cured product thereof has excellent heat resistance. Also disclosed are a method for producing such a polysiloxane, and a method for producing a polysiloxane cured product by using such a polysiloxane. Specifically disclosed is a polysiloxane which is characterized by being obtained by hydrolyzing/polycondensing a silicon compound having three hydrolyzable groups, a silicon compound having two hydrolyzable groups and a silicon compound having one hydrolyzable group. The polysiloxane is also characterized by containing a hydrosilylatable carbon-carbon unsaturated group, a hydrosilyl group and an alkoxysilyl group, and having a number average molecular weight of 500-20,000. |