Appeal No. 2004-2322 Page 4
Application No. 09/385,412
hydrogen atoms of which reasonably appear to be “active hydrogen atoms,” since they
are free to take part in chemical reactions. Thus, the product of Mougin’s first-stage
reaction is obtained from a compound which contains at least two active hydrogen
atoms per molecule (i.e., polysiloxane) and at least one diisocyanate.
In Mougin’s second-stage reaction, the polysiloxane-isocyanate reaction
products of the first stage are coupled together into longer polycondensates via a
coupling agent that reacts with the terminal isocyanate groups. See column 3, line 59 to
column 4, line 16. Mougin teaches that the coupling groups can be diols, diamines, or
alcoholamines, in which the –OH and/or –NH2 groups are attached to a radical
(represented by “B”). Mougin also teaches that
[a]ccording to a[ ] highly preferred aspect of the invention the coupling
agents (that is to say, in fact, the radical B) carry chemically anionizable or
cationizable groups, that is to say groups which, respectively, give anionic
groups when subjected to the action of a base (this is the case, for
example, with carboxylic groups) and give cationic groups when subjected
to the action of an acid (for example in the case of a tertiary amine).
Column 4, lines 17-24. See also column 6, lines 16-38 (stating that diols containing “a
carboxylic acid anion (–COO –)” are “particularly suitable within the scope of the present
invention”). Thus, Mougin teaches that a preferred polycondensate is one in which the
polysiloxane-isocyanate units are coupled via a diol containing a carboxylic acid radical.
Mougin also teaches that the polycondensates produced via the two-stage
process are useful in “the field of hair care products (hair washing, care or beauty),
where the compositions according to the invention, in particular in the form of aerosols,
of mousse, of shampoos, of after-shampoos, of styling or treating lotions or gels, of
shaping or sculpting or setting lacquers or lotions, make it possible to give the hair
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007