Silicone organic elastomer gels from organopolysiloxane resins
View Patent ↗Gel compositions are disclosed comprising a silicone elastomer from the reaction of an SiH containing organopolysiloxane resin and an organic compound having at least two aliphatic unsaturated groups in its molecule.
1. A gel composition comprising:
a silicone elastomer from the reaction of;
A) an SiH containing MQ resin comprising the formula
(Me 2 HSiO 1/2 ) a (Me 3 SiO 1/2 ) b (SiO 4/2 ) e
where
a is greater than 0
b is from 0 to 0.8
e is 0 to 0.9,
with the provisos that the sum of a, b, and e is at least 0.95 and e is greater than 0,
Me is methyl,
B) an organic compound having at least two aliphatic unsaturated groups in its molecule selected from
H 2 C═CHCH 2 O[C 3 H 6 O] g CH 2 CH═CH 2 ,
H 2 C═CHO[C 3 H 6 O] g CH═CH 2 ,
HC≡CCH 3 O[C 3 H 6 O] g CH 2 C≡CH 2
HC≡CC(CH 3 ) 2 O[C 3 H 6 O] g C(CH 3 ) 2 C≡CH, or
H 2 C═C(CH 3 )CH 2 O[C 3 H 6 O] g CH 2 C(CH 3 )═CH 2 ,
where g is greater than 2,
and
C) a hydrosilylation catalyst,
and;
D) a carrier fluid selected from isododecane, isohexyldecane, or isodecyl neopentanoate,
E) an optional personal or healthcare active,
wherein the gel composition has a hardness of at least 0.03 Newton force.
2. The composition of claim 1 wherein the molar ratio of A)/B) is from 10/1 to 1/10.
3. The composition of claim 1 wherein E) is a personal care active selected from a vitamin, sunscreen, plant extract, or fragrance.
4. The composition of claim 1 wherein E) is a health care active selected from a topical drug active, protein, enzyme, antifugual, or antimicrobial agent.