process for treating a porous substrate to achieve improved water and oil repellency
US5156780A · kind A · utility
66Cited by
13References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1990 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Jul 18, 2010 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Oil and water repellency is conferred upon porous substrates (10) by treatment with a solution of a monomer (16) of the formula: (C.sub.n E.sub.2n+1)(CH.sub.2).sub.x (CHR)OCOCH.dbd.CH.sub.2 where n is an integer; X is 0,1,2 or 3 and R is H or CH.sub.2 --OCOCH.dbd.CH.sub.2. The monomer is polymerized in situ upon the substrate to provide a conformal coating (16') which preserves the porous structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.