| (19) |
 |
|
(11) |
EP 0 451 924 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
11.03.1992 Bulletin 1992/11 |
| (43) |
Date of publication A2: |
|
16.10.1991 Bulletin 1991/42 |
| (22) |
Date of filing: 12.04.1991 |
|
| (51) |
International Patent Classification (IPC)5: C11D 3/386 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE DK ES FR GB IT LI LU NL SE |
| (30) |
Priority: |
13.04.1990 US 509549
|
| (71) |
Applicant: Colgate-Palmolive Company
(a Delaware corporation) |
|
New York, N.Y. 10022 (US) |
|
| (74) |
Representative: Smulders, Theodorus A.H.J., Ir. et al |
|
Vereenigde Octrooibureaux
Nieuwe Parklaan 97
2587 BN 's-Gravenhage
2587 BN 's-Gravenhage (NL) |
|
| |
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| (54) |
Enzyme stabilizing composition and stabilized enzyme containing built detergent compositions |
(57) A three component enzyme stabilization system including boric acid, citric acid and
calcium ions helps maintain the enzyme activity of aqueous built detergent compositions
in accelerated aging (multiple freeze-thaw cycles). The preferred detergent compositions
are "softergents" and also include a clay softener, a mixture of anionic, nonionic
and amphoteric surfactants, and detergent builder(s).