Patent ID: 11898057
Assignee: DAICEL CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B  Y | IPC C

Claim 0:
1. A weather-resistant hard coat composition, the composition comprising a polyorganosilsesquioxane having a constituent unit represented by Formula (1):

[R1SiO3/2]  (1)

wherein R1 of the constituent unit of Formula (1) represents a group containing an active energy ray-curable functional group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a hydrogen atom;
provided that at least some of the R1 groups are the groups containing the active energy ray-curable functional group; and
a constituent unit represented by Formula (II):

[RbSiO2/2(ORc)]  (II)

wherein Rb represents a group containing an active energy ray-curable functional group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, or a hydrogen atom, and
wherein Rc represents a hydrogen atom or an alkyl group having from 1 to 4 carbons; and
provided that at least some of the Rb groups are the groups containing the active energy ray-curable functional group;
wherein the composition further comprises a compound having one or more thermally-polymerizable functional groups and one or more photopolymerizable functional groups per molecule;
wherein the compound having one or more thermally-polymerizable functional groups and one or more photopolymerizable functional groups per molecule comprises at least one selected from the group consisting of tripropylene glycol diglycidyl ether di(meth)acrylate and tripropylene glycol diglycidyl ether half(meth)acrylate;
wherein said tripropylene glycol diglycidyl ether di(meth)acrylate has the following formula:, wherein said tripropylene glycol diglycidyl ether half(meth)acrylate has the following formula:, wherein a molar ratio [(constituent unit represented by Formula (1))/(constituent unit represented by Formula (II))] of the constituent unit represented by Formula (1) to the constituent unit represented by Formula (II) is from 5 to 500;
wherein a ratio of a total amount of the constituent unit represented by Formula (1) wherein R1 is the group containing the active energy ray-curable functional group and the constituent unit represented by the Formula (II) wherein Rb is the group containing the active energy ray-curable functional group with respect to a total amount (100 mol %) of siloxane constituent units is from 55 to 100 mol %;
wherein a number average molecular weight of the polyorganosilsesquioxane is from 1000 to 50000;
wherein a molecular weight dispersity, weight average molecular weight/number average molecular weight, of the polyorganosilsesquioxane is from 1.0 to 4.0;
wherein the content of the polyorganosilsesquioxane is 70 wt,% or greater and less than 100 wt. % relative to a total amount of the hard coat composition excluding solvent;
wherein the active energy ray-curable functional group in R1 is at least one selected from the group consisting, of an epoxy group, an oxetane group, a vinyl ether group, a vinyl phenyl group, a (meth)acryloxy group, a (meth)acrylamide group, a vinyl group, and a vinylthio group; and
wherein a content of the compound having one or more thermally-polymerizable functional groups and one or more photopolymerizable functional groups per molecule, as a solid content, is 1 to 100 parts by weight relative to 100 parts by weight of the total amount of active energy ray-curable compounds.