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O/W emulsified composition
专利权人:
Tomiko Takakura
发明人:
Tomiko Takakura,Takafumi Kurosawa,Isao Yajima,Nozomi Fujiyama
申请号:
US13125982
公开号:
US08691191B2
申请日:
2009.10.27
申请国别(地区):
US
年份:
2014
代理人:
摘要:
The present invention provides an O/W emulsified composition which contains an organic UV absorber in an oil state such as octocrylene and a solid organic UV absorber, and is excellent in UV protection ability, formulation stability, and feeling in use. The composition according to the present invention is an O/W emulsified composition, comprising: (a) an organic UV absorber in an oil state at 20° C., comprising (a1) octocrylene (b) an organic UV absorber in a solid state at 20° C., selected from (b1) bis-ethylhexyloxyphenol methoxyphenyl triazine and (b2) methylene bis-benzotriazolyl tetramethylbutylphenol and (c) a polyoxyethylene/polyoxyalkylene alkyl ether block polymer represented by formula (1) or (2):R1O—(PO)m-(EO)n-H  (1)wherein R1 is a hydrocarbon group having 16 to 18 carbon atoms PO is an oxypropylene group, EU is an oxyethylene group, and PO and EO are added to each other in block form and m and n respectively represent average addition mole number of PO and EO, 70>m>4, 70>n>10, and n>mR2O-(AO)p-(EO)q-R3  (2)wherein R2 and R3 are either identical to or different from each other, and each of them is a hydrocarbon group having 1 to 4 carbon atoms AO is an oxyalkylene group having 3 to 4 carbon atoms, EO is an oxyethylene group, and AO and EO are added to each other in block form and p and q respectively represent average addition mole number of AO and EO, 1≦p≦70, 1≦q≦70, and 0.2<(q/(p+q))<0.8, andwherein average particle size of the oil phase comprising the component (a) is 700 nm or less.
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