Method for removal of hydrocarbons from fabrics
US5931971A · kind A · utility
8Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 1998 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Sep 22, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2321/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method or removing and disposing hydrocarbons absorbed in a fabric, the method comprising the steps of providing a nonwoven fabric which comprises in excess of 55% fibers of polyvinyl alcohol, and wherein the nonwoven fabric is contaminated with hydrocarbons, disposing the nonwoven fabric in a warm aqueous bath heated to a temperature substantially less than the dissolution temperature of the polyvinyl alcohol fibers, whereby to cause liberation of the hydrocarbons from the fabric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.