Appeal No. 95-4089
Application 08/090,073
group consisting of lower aliphatic monocarboxylic acids
and dicarboxylic acids in an amount of about 3-7% by
weight of the [cleaning] compositions. Representative
members of the aliphatic acid include C -C alkyl and
1 6
alkenyl monobasic [i.e., monocarboxylic] acids and
dibasic [i.e., dicarboxylic] acids such as glutaric acid
[dicarboxylic acid with 5 carbon atoms], succinic acid
[dicarboxylic acid with 4 carbon atoms], propionic acid
[monocarboxylic acid with 3 carbon atoms], adipic acid
[dicarboxylic acid with 6 carbon atoms], hydroxyacetic
acid [monocarboxylic acid with 2 carbon atoms ] and9
mixtures thereof. Glutaric acid [dicarboxylic acid with
5 carbon atoms] is preferred, however, a mixture of the
*** [dicarboxylic] acids, adipic, glutaric and succinic
acids is easily available commercially ***. The ratio[10]
of the acids in the foregoing mixture is adjusted to
maximize water solubility of the mixture by employing
glutaric acid, the most water-soluble of these three
saturated aliphatic dibasic acids, as the major
component. The organic acids provide moderate acidity to
the cleaning compositions and thereby [are said to]
enhance cleaning performance, particularly removal of
soap scum from tiles and other hard surfaces, with very
Hydroxyacetic acid also has a free hydroxy group. The formula for hydroxyacetic9
acid is HO)CH )COOH.
2
One product would appear to be a composition sold under the designation DAGS.10
DAGS is further described in footnote 1 of Example 1 of Cook.
- 14 -
Page: Previous 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Next
Last modified: November 3, 2007