C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
167/314, 260/477
C07C 69/736 (2006.01) C07C 45/45 (2006.01) C07C 45/68 (2006.01) C07C 45/71 (2006.01) C07C 47/575 (2006.01) C07C 49/83 (2006.01) C07C 49/84 (2006.01) C07C 229/60 (2006.01)
Patent
CA 1324153
- 1 - Abstract The present invention relates to novel sunscreen agents which have the ability to absorb both UVA and UVB wavelength radiation. The sunscreen agents comprise a specific type of UVA-absorbing chromophore covalently bonded to a specific type of UVB-absorbing chromophore. The chromophore moieties are covalently bonded together such that the electron systems of these moieties are not directly coupled. Typical of the novel sunscreen agents are Image ; or Image . where Y is preferably -O-(-CH2-)n-O- in which n is 1-6; A is selected from R, -OR, -NR2 and SO3, in which R is H, straight or branched chain alkyl having 1-20 carbon atoms, (CH2CH2O)p-H or (CH2CH(CH3)O)p-H where p is 1-8 and R2 is H, OH or straight or branched chain alkyl having 1- 20 carbon atoms and A2 is -OR or NR2 where R and R2 have the above meanings.
540714
Sabatelli Anthony Daniel
Spirnak Josephine Ann
Kirby Eades Gale Baker
The Procter & Gamble Company
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