Dyeing of polyolefins
US4369039A · kind A · utility
5Cited by
8References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1982 |
| Grant date | Jan 18, 1983 |
| Priority date | — |
| Expiry date | Jan 11, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/928
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process is provided for dyeing articles of unmodified polyolefin polymer with an aqueous dispersion of a fatty-acid-soluble, solvent dye, a fatty acid and an amine. After application of the dispersion to the article, the amine is volatilized from the applied dispersion. The process is particularly useful in providing novel, dyed, nonwoven fabrics made from polyethylene film fibrils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.