Patent ID: 9688035
Date: 2017-06-27
CPC Classifications: B29C,B29D,B29K

Claim:
1. A method of forming an optical article, comprising: applying a silicone composition to a surface, wherein the silicone composition is a solid and has a glass transition temperature greater than room temperature; and heating the silicone composition to a temperature at or above the glass transition temperature such that the silicone composition flows; wherein: the silicone composition forms a light transmitting sheet upon cooling following the heating; and the silicone composition comprises an organosiloxane block copolymer having a weight average molecular weight of at least 20,000 g/mole and comprises: 40 to 90 mole percent disiloxy units of the formula [R 10 to 60 mole percent trisiloxy units of the formula [R 0.5 to 25 mole percent silanol groups [≡SiOH]; wherein R wherein at least 30 weight percent of the non-linear blocks are crosslinked with another non-linear block and aggregated in nano-domains, and wherein each linear block is linked to at least one non-linear block.