Aftertreatment of dyed cellulosic materials
US4531946A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1983 |
| Grant date | Jul 30, 1985 |
| Priority date | — |
| Expiry date | Mar 9, 2003 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P1/5278
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Wet and dry crocking are reduced on dyed textile cellulosic materials and their blends by aftertreatment with finish mixtures containing effective amounts of a reactive component and a blocked urethane prepolymer component. The reactive component is a polyamide, epoxidized polyamide, chain-extended polyamide, epoxidized chain extended polyamide, polyamine epoxidized polyamine or epoxidized polyalkylenimine and the blocked urethane prepolymer component is a reaction product of excess polyisocyanate and hydroxy terminated polyether or hydroxy terminated polyester whose reactive isocyanate groups are blocked. Finish mixtures are applied to the dyed textile material, dried and cured to improve wet and dry crockfastness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.