Non-aqueous shade enhancing agent
US4977204A · kind A · utility
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2References
9Claims
0Family size
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Key dates
| Filing date | Oct 20, 1988 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Oct 20, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M2101/32
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A non-aqueous shade enhancing agent composition comprises (a) a copolymer obtained by graft-polymerizing a main chain polymer being substantially insoluble in a non-aqueous solvent having a solubility parameter in the range of 6.5 t0 10.0 with a branch polymer being soluble in said solvent at a weight ratio of the main chain polymer to the branch polymer in the range between 90/10 and 10/90 and (b) a specific quaternary ammonium salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.