Grafting process, ensuring waterproofing, of a polymeric material by a fluorinated monomer and material obtained thereby
US4901389A · kind A · utility
15Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1988 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Apr 14, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M14/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The grafting reaction according to the invention occurs after having impregnated the polymeric material, on which were previously created free radicals by activation within an emulsion containing the fluorinated monomer and a graftable derivative of the morpholine. The preferred reagents are morpholinoethyl methacrylate and 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl methacrylate. The invention is applicable to the waterproofing of textile articles, particularly made of cotton, silk, linen. The material thus grafted is waterproof when cold, but when hot, it may be washed, dyed or printed by transfer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.