Cleaning textiles
US7481893B2 · kind B2 · utility
8Cited by
20References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2003 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Mar 21, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L1/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Cleaning media based on liquid CO2 and including from 0.01 to 5% by weight of the formulation of a cleaning additive which is at least one C6 to C24 hydrocarbyl ester of a multi-carboxylic acid can be used in dry cleaning of textiles. Desirable cleaning additives are of the formula (I): R1(CO2R2)n where R1 is the residue of a C1 to C10 hydrocarbyl group from which n hydrogen atoms have been removed, R2 is a C6 to C24 hydrocarbyl, particularly alkyl or alkenyl, group; and n is from 2 to 5; particularly C12 to C18 adipate esters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.