Highly durable oil/water repellents for textiles
US6451717B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1999 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Dec 14, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/291
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention comprises an aqueous emulsion for imparting oil and water repellency to textiles prepared by polymerizing a mixture of monomers (a), (b) and (c) as follows:(a) 70-90% polymer chain units derived from a mixture of monomers of the formula:Rf—Q—A—C(O)—C(R)═CH2 wherein Rf is a straight or branched-chain perfluoroalkyl group containing from 2 to about 20 carbon atoms; R is H or CH3; A is O, S, or N(R′); Q is alkylene of 1 to 15 carbon atoms, hydroxyalkylene of 3 to 15 carbon atoms, —(CnH2n)(OCqH2q)m—, —SO2—NR′(CnH2n)—, or —CONR′(CnH2n)—, wherein R′ is H or alkyl of 1 to about 4 carbon atoms, n is 1 to about 15, q is 2 to about 4, and m is 1 to about 15;(b) 5-25% monomer chain units derived from a long-chain alkyl (meth)acrylate of the formula:R″—O—C(O)—C(R)═CH2 wherein R″ is an alkyl group of about 12 to about 24 carbons and R is H or CH3;(c) 0.1-2.5% monomer chain units derived from compounds of the formulas:HO—CH2—CH2—O—C(O)—C(R)═CH2 orHO—CH2—N(H)—C(O)—C(R)&bo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.