Copolymers containing perfluoroalkyl groups and aqueous dispersions thereof
AssigneeHuntsman Textile Effects (Germany) GmbH
InventorsRolf Moors, Wilhelm Artner, Isabella Rettenbacher, Edeltraud Schidek
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Abstract
Copolymers which are composed of at least 4 monomers, including (meth)acrylate compounds containing perfluoroalkyl groups, are suitable for the treatment of fiber materials. The copolymers are usually used here in the form of aqueous dispersions. The fiber materials are in particular fabrics, for example made of polyolefin. Treatment with the copolymers imparts to them oil- and water-repellent properties and also repellent properties toward low molecular weight alcohols.
Claims6
An aqueous dispersion comprising a copolymer wherein the copolymer comprises copolymerized units which originate from monomers of formulae a) to g) in the following relative amounts
- 35-55 mol % of units originating from a)
- 8-55 mol % of units originating from b)
- 8-42 mol % of units
- CH2═CCl2
- originating from c)
- 4-18 mol % of units originating from d)
- 3-16 mol % of units originating from e)
- 4-16 mol % of units originating from f)
- 3-16 mol % of units originating from g)
- where all of the radicals R1, independently of one another, are hydrogen or the methyl group,
- RF is a perfluoroalkyl radical of the formula
- in which x is a number from 2 to 22,
- t is a number from 8 to 24 and
- n is a number from 2 to 6.
Dependencies are inferred from the claim text.