Enzyme-containing particles and liquid detergent concentrate
US6242405A · kind A · utility
31Cited by
10References
17Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 8, 1998 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Jan 8, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0013
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A liquid detergent concentrate has an outer liquid detergent phase and enzyme containing particles dispersed in the liquid phase. The particles have a polymer shell formed from a condensation polymer which is permeable to water and low molecular weight components of the outer liquid phase and the core comprises the enzyme, an inner liquid detergent phase in substantially equilibrium with the outer phase and a core polymer which causes stretching as a result of osmosis when the concentrate is diluted in water. Encapsulated precipitated enzymes are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.