Granular detergent compositions built with 2,2'-oxodisuccinate and zeolite A, process to make same, and agglomerated detergency builder
US5104568A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Nov 20, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
2,2'-oxodisuccinate detergent builder salts (ODS), especially tetrasodium 2,2'-oxodisuccinate, are difficult to dry and tend to pick up water due to the hygroscopicity of the 2,2'-oxodisuccinate: yet the present invention secures improved granular built detergent compositions comprising ODS by an aqueous ODS/zeolite coagglomeration process, the resulting agglomerate being remarkably stable and nonhygroscopic. Other detergent ingredients, such as perborate bleach, surfactants and the like, can be dry-mixed with the agglomerates to form fully-formulated granular detergents. The invention encompasses the agglomeration process, the ODS agglomerates and granular detergent compositions containing same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.