Active energy ray curable hot melt silicone composition, cured product thereof, and method of producing film
AssigneeDow Corning Toray Co., Ltd.
InventorsRyota DOGEN, Haruna YAMAZAKI, Shin YOSHIDA, Makoto YOSHITAKE
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Abstract
Disclosed is an active energy ray curable hot melt silicone composition that is non-flowable at 25° C. and has a viscosity of 1,000 Pa·s or less at 100° C. The active energy ray curable hot melt silicone composition comprises: (A) a mixture of (A1) an organopolysiloxane having an aliphatic unsaturated bond-containing organic group and (A2) an organopolysiloxane optionally having an aliphatic unsaturated bond-containing organic group, (B) a compound having at least two mercapto groups in a molecule, and (C) a photoradical initiator. A cured product and a method of making a film are also disclosed.
Claims14
An active energy ray curable hot melt silicone composition that is non-flowable at 25° C. and has a viscosity of 1,000 Pa·s or less at 100° C., comprising:
- (A) 100 parts by mass of an organopolysiloxane mixture containing from 10 to 50% by mass of component (A-1) below and from 50 to 90% by mass of component (A-2):
- (A-1) an organopolysiloxane represented by the following average unit formula:
- (R13SiO1/2)a(R12SiO2/2)b(R1SiO3/2)c(SiO4/2)d
- wherein, each R1 independently is a methyl group, a phenyl group, or an organic group having an aliphatic unsaturated bond, with the proviso that from 0.01 to 1 mol % of all R1 are organic groups having an aliphatic unsaturated bond and 90 mol % or greater of the other R1 are methyl groups, a is a number from 0 to 0.05, b is a number from 0.9 to 1, c is a number from 0 to 0.03, d is a number from 0 to 0.03, and the sum of a to d is 1,
- (A-2) an organopolysiloxane represented by the following average unit formula:
- (R23SiO1/2)e(R22SiO2/2)f(R2SiO3/2)g(SiO4/2)h(HO1/2)i
- wherein, each R2 independently is a methyl group, a phenyl group, or an organic group having an aliphatic unsaturated bond, with the proviso that from 0 to 10 mol % of all R2 are organic groups having an aliphatic unsaturated bond and 90 mol % or greater of the other R2 are methyl groups, e is a number from 0.3 to 0.7, f is a number from 0 to 0.05, g is a number from 0 to 0.05, h is a number from 0.3 to 0.7, i is a number from 0 to 0.05, and the sum of e to h is 1;
- (B) a compound having at least two mercapto groups in a molecule, in an amount such that an amount of the mercapto groups in component (B) is from 0.5 to 5.0 mol per 1 mol of the total of the organic groups having an aliphatic unsaturated bond in component (A);
- and
- (C) a photoradical initiator in an amount that accelerates curing of the composition by an active energy ray.
Dependencies are inferred from the claim text.