Benzoquinone dye, rope-dyeing dye compositions, cotton rope-dyeing methods using same, and the thus dyed materials
US5122160A · kind A · utility
1Cited by
1References
18Claims
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Key dates
| Filing date | Dec 4, 1990 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Dec 4, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/918
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Denim cotton warp yarns are rope-dyed with a benzoquinone dye of formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.1 ', R.sub.2 ' and R.sub.3 ' commonly or independently represent a hydrogen atom, a halogen atom, alkyl, cycloalkyl, alkenyl, aryl, aralkyl, alkoxyl or alkoxyalkyl alone or in combination with a red .DELTA..sup.2,3' -biindolin-3,2'-dione dye and/or a blue indigoid dye or sequentially with the latter dye.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.