Appeal No. 2007-0080 Page 2
Application No. 09/771,595
page 1, lines 10-16. UV absorbers are used to absorb both UV-A and UV-B radiation.
Id., page 1, lines 22-24. Inorganic sunscreen filters, such as titanium dioxide and zinc
oxide, “have also become increasingly important in cosmetics and dermatology.” Id.,
page 1, lines 26-32.
Discussion
Claim status
Claims 1-4 and 9-19, which are all the pending claims in the application, are on
appeal. We select claim 1 as representative to decide this appeal. This claim contains
two components: A) a copolymer; and B) an inorganic UV filter. It reads as follows:
1. A mixture comprising
A) at least one copolymer obtained by
(i) free-radically initiated solution polymerization of a monomer mixture of
(a) 0.01 to 99.99% by weight of at least one monomer chosen from the group
consisting of N-vinylimidazoles of formula (I)
in which the radicals R1 to R3, independently of one another, are hydrogen, C1-
C4-alkyl or phenyl, and diallyamines of formula (II)
in which the radical R4 is C1-C24-alkyl;
(b) 0.01 to 99.99% by weight of at least one N-vinyllactam;
(c) 0 to 50% by weight of at least one unsaturated acid or an unsaturated
anhydride;
(d) 0 to 50% by weight of at least one free-radically copolymerizable monomer
which is different from (a), (b) and (c); and
(e) 0 to 10% by weight of at least one monomer having at least two ethylenically
unsaturated nonconjugated double bonds which acts as crosslinker, and
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Last modified: November 3, 2007