Compositions and methods for controlled release of fragrance-bearing substances
US4842761A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1988 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Mar 23, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Laundering compositions containing particulate olfactory polymers which provide for the controlled release of olfactory compositions such as perfumes, the particulate olfactory polymers comprising a water-soluble normally solid polymer, a water-insoluble normally solid polymer, and at least one olfactory composition which is in each polymer, one polymer being in the form of discrete entitles in a matrix of the other polymer, together with laundering articles such as packets containing such compositions; methods for laundering using such compositions; the particulate olfactory polymers; and methods for preparing the particulate olfactory polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.