Appeal 2006-2175
Application 10/122,855
INTRODUCTION
The claims are directed to aqueous liquid or gel-type detergent
compositions exhibiting enhanced α-amylase enzyme stability, wherein the
gel or liquid detergent composition comprises an oxygen bleach resistant
α-amylase enzyme, boric acid and propanediol, and a process of enhancing
stability of α-amylase enzymes in a liquid dishwashing detergent
(Specification 1, ll. 11-16). The oxygen bleach resistant α-amylase enzyme
in the composition and process does not include “Termamyl alpha amylase
enzyme” (claims 1, 8, and 13), which was discovered by Appellants to
possess relatively inferior compositional stability (Specification 3 and 5).
Claims 1, 4, 6, 8, 10, 11, and 13 are illustrative:
1. An aqueous liquid or gel detergent composition, comprising:
(a) from about 0.1% to about 15% by weight, boric acid;
(b) from about 0.1% to about 10% by weight, a polyhydroxy
compound selected from the group consisting of ethylene glycol, 1,3-
propylene glycol, 1,2-propanediol, butylene glycol, hexylene glycol,
mannitol, sorbitol, erythritol, glucose, fructose, lactose, erythritol-1,4-
anhydride, and mixtures thereof;
(c) from about 0.1% to about 2% by weight, an oxygen bleach
resistant α-amylase enzyme; and
(d) from about 5% to about 80% water,
wherein the oxygen bleach resistant α-amylase enzyme does not
comprise Termamyl alpha amylase enzyme.
4. The detergent composition according to claim 1, wherein said
polyhydroxy compound is 1,2-propanediol.
2
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