Method for cleaning textiles
US7514396B2 · kind B2 · utility
0Cited by
7References
21Claims
0Family size
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Key dates
| Filing date | Jun 24, 2002 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Apr 5, 2023 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L1/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Detergent or micelle free cleaning media based on detergent free and/or micelle free liquid CO2 and including from 0.01 to 5% by weight of the formulation of a cleaning additive which is at least one multi-ester having a molecular weight of not more than 750 can be used in dry cleaning of textiles. Desirable cleaning additives are of the formula (1): R1(XR2)n where X, R1, R2, and n have defined meanings, particularly to be esters of multi-carboxylic acids and mono-hydroxy alcohols or esters of mono-carboxylic acids and multi-hydroxy alcohols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.