Patent ID: 11912828
Assignee: SHIN-ETSU CHEMICAL CO., LTD.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 0:
1. A cosmetic comprising a crosslinked organosilicone resin represented by the following average composition formula (1):

(R13SiO1/2)a1(R23SiO1/2)a2(R33SiO1/2)a3(R13−p(X1/2)pSiO1/2)a4(R12SiO2/2)b(R1SiO3/2)c(SiO4/2)d   (1)

wherein:
R1 is, independently of each other, a substituted or unsubstituted, monovalent hydrocarbon group having 1 to 30 carbon atoms and having no aliphatic unsaturated bond,
R2 is, independently of each other, a polyoxyalkylene-containing group, a polyglycerin-containing group, or a group selected from the groups defined for R1 and at least one of R2 in each of the R23SiO1/2 units is a polyoxyalkylene-containing group or a polyglycerin-containing group,
R3 is, independently of each other, an organopolysiloxane-containing group or a group selected from the groups defined for R1 and at least one of R3 in each of the R33SiO1/2 units is an organopolysiloxane-containing group,
X is a divalent group represented by formula (2) or formula (3):, wherein R4 is, independently of each other, a substituted or unsubstituted, monovalent hydrocarbon group having 1 to 30 carbon atoms and having no aliphatic unsaturated bond, e is an integer of 0≤e≤500 and k is an integer of 0≤k≤5;

—(CH2)2—CfH2f—(CH2)2—  (3)

wherein f is an integer of 0≤f≤20;
optionally, a part of R2, R3 and X may be a hydroxyl group, and
a1, a2, a3, a4, b, c, and d satisfy the equations, 0<a1≤400, 0≤a2≤200, 0≤a3≤400, 0<a4≤50, 0≤b≤320, 0≤c≤320, 0<d≤1,000 and 0.5≤(a1+a2+a3+a4)/d≤1.5 and p is an integer of 1≤p≤3.