Propylene oxide polyadducts containing carboxyl groups and their salts useful as dyeing assistants for dyeing wool fibers
US4615837A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1981 |
| Grant date | Oct 7, 1986 |
| Priority date | — |
| Expiry date | Nov 16, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/917
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A propylene oxide polyadduct containing carboxyl groups, or a salt thereof, obtained from PA1 (a) an adduct of propylene oxide and an aliphatic alcohol having 3 to 10 carbon atoms which is at least trihydric, PA1 (b) an aliphatic dicarboxylic acid or the anhydride thereof having 2 to 10 carbon atoms or a mono- or di-lower alkylester of said dicarboxylic acids, PA1 (c) an aliphatic diol having an average molecular weight of at most 2,000, PA1 (d) a fatty acid having 8 to 22 carbon atoms and PA1 (e) an aromatic dicarboxylic acid or the anhydride thereof having 8 to 12 carbon atoms; it is in particular useful as dyeing assistant for the dyeing of fibrous material made of or containing wool with anionic dyes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.