公开(公告)号：US20200291187A1

公开(公告)日：2020-09-17

申请号：US16611918

申请日：2018-05-17

申请人： Dow Silicones Corporation

发明人： Martijn A. Beukema ,  Stanton Dent ,  Pierre Descamps ,  Stuart Leadley ,  Joel McDonald ,  Kevin van Tiggelen ,  Michelle Cummings ,  Serge Creutz ,  Francois de Buyl

IPC分类号： C08G77/20 ,  C08G77/06 ,  C09D183/06 ,  B29C45/00

摘要： A curable silicone composition comprising (A) an alkenyl-containing organopolysiloxane comprising (A-1) a dialkylpolysiloxane that has an average of at least two alkenyl groups in each molecule), and (A-2) an alkenyl-containing, resin-form organopolysiloxane that comprises the SiO4/2 unit, R12R2SiO1/2 unit, and R13SiO1/2 unit; (B) an organopolysiloxane that has an average of at least three silicon-bonded hydrogen atoms in each molecule, wherein component (B) is an organopolysiloxane comprising (B-1) an organopolysiloxane that contains at least 0.7 mass % silicon-bonded hydrogen and that comprises SiO4/2 units and HR32SiO1/2 units in a ratio ranging from 1.50 to 2.50 moles of HR32SiO1/2 units per 1 mole of SiO4/2 units, at 50 to 100 mass % of component (B), and (B-2) a straight-chain organopolysiloxane that contains at least 0.3 mass % silicon-bonded hydrogen, at 0 to 50 mass % of component (B); and (C) a hydrosilylation reaction catalyst.