Copolymers containing fluorine and their use for the water-repellent and oil-repellent treatment of various substrates
US4366299A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1981 |
| Grant date | Dec 28, 1982 |
| Priority date | — |
| Expiry date | Jan 27, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31544
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to fluorinated copolymers and their application to the waterproofing and oil-resistance treatment of various substrates. These copolymers comprise by weight: PA1 (a) 35 to 98% of a monomer or monomers of the formula: ##STR1## in which Rf is a perfluoro radical, Q is an oxygen or sulfur atom, B is a bivalent chain linked to Q by a carbon atom, one of the symbols R is a hydrogen atom and the other a hydrogen atom or an alkyl radical: PA1 (b) 1 to 15% of a monomer or monomers of the formula: ##STR2## in which B' is an alkylene radical, R' is a hydrogen atom or an alkyl radical, R.sub.1 is an alkyl, hydroxyethyl or benzyl radical, R.sub.2 is a hydrogen atom or an alkyl, hydroxyethyl or benzyl radical or R.sub.1 and R.sub.2, together with the nitrogen atom, form a heterocyclic radical: PA1 (c) 1 to 50% of a monomer or monomers of the formula: ##STR3## in which R.sub.3, R'.sub.3, R.sub.4 and R.sub.5 are hydrogen atoms or alkyl radicals; and possibly PA1 (d) up to 10% of any other monomer. These copolymers are particularly well adapted to the waterproofing and oil-proofing of paper and similar articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.