Condensation products of hydroxycarboxylic acids and glycols or glycerol
US7186272B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 2002 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Mar 6, 2022 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P1/65118
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to reaction products of glycols, diglycols, higher glycols or glycerol with α-hydroxycarboxylic acids in a molar ratio of 1:2 or higher, especially conforming to the general formula (V) where R is hydrogen or a C1-3 alkyl group, preferably methyl, nx is from 1 to 5, preferably from 1 to 3, n is 1 or 2 and when n=1 the radical R″ is C1-4 alkylene, preferably ethylene, x is defined as x′ and y is not less than 1, preferably from 1 to 5, especially 1 or 2, and when n=2 the radical R″ is a glycerol radical, x is defined as x″ and y is =1.The invention further relates to the use of the (poly)hydroxycarboxylic acid (poly)glycol esters or (poly)hydroxycarboxylic acid glyceryl esters as acid donors and for controlling the pH in textile treatment processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.