Appeal 2007- 2552
Application 10/276,428
col. 2, l. 6). The alkyl glycoside of formula II includes a linear
or branched alkyl group containing from 16 to 22 carbon atoms.
6. The alcohol component is a fatty alcohol with a linear or
branched aliphatic radical containing from 8 to 22 carbon atoms
(Amalric, col. 2, ll. 12-16). Usually two fatty alcohols are used
and, preferably, each of these fatty alcohols is identical to the
alkyl group of the alkyl glycoside (Amalric, col. 2, ll. 49-52).
In other words, one of the fatty alcohols has from 8 to 15
carbon atoms, the number matching the number of carbon
atoms in the radical of the Formula I alkyl glycoside and the
other fatty alcohol has from 16 to 22 carbon atoms, the number
in the Formula II alkyl glycoside. Dodecanol is an exemplified
fatty alcohol (Examples 1-3).
7. Appellants’ Specification discloses mixtures of branched and
linear alkyl glycosides, the branched and linear alkyl glycosides
being the same, or similar to, those of Amalric. Appellants’
Specification also discloses adding the same, or substantially
the same, fatty alcohols as those of Amalic to the mixtures
containing linear as well as branched alkylglycosides. The
Specification discloses that these mixtures form
microemulsions. Specifically, Appellants disclose adding up to
70 wt% linear alkyl glycoside to the branched alkyl glycoside
containing 8-16 carbon atoms (Specification 4:10-15) in their
microemulsion. Moreover, Appellants’ own microemulsion
may contain fatty alcohols with 8-14 carbon atoms as
cosurfactants (Specification 6:32-35).
4
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 Next
Last modified: September 9, 2013