Patent ID: 6617392
Filing Date: 2003-09-09
Classification: C08G,C08K,C08L

Abstract:
A curable silicone composition for making molds hardened using a hardening agent, comprising:a. trimethylsiloxyl end blocked polydimethylsiloxane having a viscosity of 100-1,000 cps at 25Â° C.; b. hydroxyl group end blocked polydimethylsiloxane having a viscosity of 5,000-100,000 cps at 25Â° C.; c. a filler; d. a surface treatment agent of the filler; and, e. an alkene or acetylene polymerization inhibitor selected from the group consisting of: (i) sulfur; (ii) disulfides having a formula Râ€²â€”Sâ€”Sâ€”Râ€³, where Râ€² and Râ€³ are each independently selected from a group of monovalent hydrocarbon radicals having from one to forty carbon atoms; (iii) organic tin containing sulfur having a formula [R2SnS]3, where R is selected from a group of monovalent hydrocarbon radicals having from one to forty carbon atoms; and (iv) organic tin containing sulfur having a formula R2â€²Sn(SRâ€³)2 where Râ€² and Râ€³ are each independently selected from a group of monovalent hydrocarbon radicals having from one to forty carbon atoms.