| 摘要 |
PROBLEM TO BE SOLVED: To obtain an emulsion useful as a cosmetic preparation, especially a skin care composition, a hair care composition, a composition for caring a nail or a composition for sanitation in oral cavity by using a specific carboxamidopolysiloxane. SOLUTION: A compound represented by formula I [R, R' and R'' are each a 1-6C alkyl or phenyl; (a), (b), (n), (m) and (k) are each 0<=(a)<=2; 1<=(b)<=3; 1<=(n)<=100; 10<=(m)<=800; 0<=(k)<= (2-b)m+[(1-a)n+2]}; B is an organic group represented by formula II (p) is 0-10; Y and Z are each a bivalent hydrocarbon; X is a bivalent hydrocarbon from (CH2 )y [2<=(y)<=6], CH2 -CHR<5> or CHR<5> -CH2 (R<2> is a 1-20C alkyl, etc.)} or a compound represented by formula III (R''' is a 1-6C alkyl, a 1-6C alkoxy, etc.), preferably a compound having a carboxyl group content within the range of 0.02-2.0mequiv./g and 1×10<3> to 60×10<3> is used to obtain a cosmetic preparation. The resultant preparation is preferably used as an emulsion.
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