公开(公告)号：US20200071579A1

公开(公告)日：2020-03-05

申请号：US16614023

申请日：2018-05-16

Applicant: DAICEL CORPORATION

Inventor： Akihiro SHIBAMOTO ,  Shinji MAETANI ,  Kazuhiro NISHIDA ,  Daisuke USA ,  Akira YAMAKAWA ,  Naoko TSUJI

IPC: C09J183/06 ,  C09J5/06 ,  C09J11/06 ,  C08G77/04 ,  C08K5/00 ,  B32B7/12

Abstract: Provided is an adhesive composition that can be cured at low temperatures and can form a cured product having excellent insulating property, heat resistance, and adhesiveness. The adhesive composition according to the present invention includes polyorganosilsesquioxane (A) including a constituent unit represented by Formula (1) below, R1SiO3/2(1), in Formula (1), R1 represents a group containing a radically polymerizable group. In the polyorganosilsesquioxane (A), a proportion of the constituent unit represented by Formula (1) and a constituent unit represented by the following Formula (2), relative to a total amount (100 mol %) of siloxane constituent units, is from 55 to 100 mol %, R1SiO2/2(OR2) (2), in Formula (2), R1 is as defined above, and R2 is a hydrogen atom or an alkyl group having from 1 to 4 carbons. The polyorganosilsesquioxane (A) has a number average molecular weight from 1500 to 50000 and a molecular weight dispersity (weight average molecular weight/number average molecular weight) from 1.0 to 4.0.

公开(公告)号：US20200079910A1

公开(公告)日：2020-03-12

申请号：US16614007

申请日：2018-05-16

Applicant: DAICEL CORPORATION

Inventor： Akihiro SHIBAMOTO ,  Shinji MAETANI ,  Kazuhiro NISHIDA ,  Daisuke USA

IPC: C08G77/04 ,  C08G59/20 ,  B29C45/14 ,  B32B27/28 ,  B32B7/12

Abstract: An object of the present invention is to provide a polyorganosilsesquioxane that can form a hard coat layer having high surface hardness through in-mold injection molding and can form a tack-free coating film, and thus is suitable as a material for a hard coat layer of a transfer film that can be wound as a roll. The present invention relates to a polyorganosilsesquioxane having a constituent unit represented by Formula (1) below; wherein a molar ratio of a constituent unit represented by Formula (I) below to a constituent unit represented by Formula (II) below, namely [(constituent unit represented by Formula (I))/(constituent units represented by Formula (II))], is from 20 to 500; a ratio of constituent units represented by Formula (1) below and constituent units represented by Formula (4) below relative to a total amount (100 mol %) of siloxane constituent units is from 55 to 100 mol %; a number average molecular weight is from 2500 to 50000; and a molecular weight dispersity (weight average molecular weight/number average molecular weight) is from 1.0 to 4.0; and a curable composition including the polyorganosilsesquioxane.