Patent ID: 7955703
Filing Date: 2011-06-07
Classification: C08L,C09J,Y10T

Abstract:
1. A silicone rubber based pressure sensitive adhesive sheet comprising: a transparent substrate film and a silicone rubber layer; wherein the adhesive sheet is formed by a process comprising coating the surface of the transparent substrate film with silicone rubber in an amount of from 30 to 100 g/m and then curing the resulting coating; wherein the silicone rubber comprises: an addition organopolysiloxane comprising an organopolysiloxane having a siloxane bond as a principal skeleton and bearing an alkenyl group and an organohydrogenpolysiloxane, from 0.01 to 3.0 parts by mass of a platinum catalyst based on 100 parts by mass of said addition organopolysiloxane, and a silicone resin which is present and in amount no greater than 10 parts by mass, based on 100 parts by mass of said addition organopolysiloxane; wherein the silicone resin comprises trifunctional or tetrafunctional siloxane units, wherein the adhesive sheet has adhesion for float glass in accordance with JIS Z 0237 being in the range of 10 to 1000 mN/25 mm, a holding power, with a load of one kg, of at least 24 hours, and a 100% modulus in the range of 0.3 to 1.5 MPa.