Appeal No. 1998-3116
Application 08/367,327
methods of using it for treating hair and for coating or
binding
a pharmaceutical composition. Claim 6, which claims the
polyurethane, is illustrative:
6. A polyurethane which is soluble or dispersible in
water and is composed of
a) at least one compound which contains two or more
active hydrogens per molecule,
b) at least one diol containing acid groups or salt
groups and
c) at
least one
diisocy anate
with acid numbers
of from 12 to 150 or
the salts of this polyurethane, which contains as compounds in
group (a) at least 5 mol% of a polycondensate of lactic acid
and of a polyol of the formula
2
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