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US 4,147,851 AGranted
Fluorine-containing oil- and water-repellant copolymers
AssigneeE. I. Du Pont de Nemours and Company
InventorStuart Raynolds
Life of this patent
Estimating the term…
Abstract
Copolymers comprising (i) from 50 to 85 percent by weight of units derived from a perfluoroaliphatic acrylate or methacrylate monomer and (ii) from 50 to 15 percent by weight of units derived from a dialkylaminoalkyl acrylate or methacrylate or the corresponding acrylamide or methacrylamide monomer in its amine salt, quaternary ammonium or amine oxide form. The copolymers are useful in oil and water repellency applications.
Claims17
A copolymer comprising the following components:
- (i) from 50 to 85 percent by weight of units derived from a monomer of the formula
- R.sub.f QO.sub.2 CC(R).dbd.CH.sub.2
- wherein
- R.sub.f is a straight- or branched-chain perfluoroalkyl group containing from 2 to 20 carbon atoms,
- R is H or CH.sub.3,
- Q is alkylene of 1 to 15 carbon atoms, hydroxyalkylene of 3 to 15 carbon atoms,
- --C.sub.n H.sub.2n (OC.sub.q H.sub.2q).sub.m --,
- --SO.sub.2 NR.sup.1 (C.sub.n H.sub.2n)--,
- or
- --CONR.sup.1 (C.sub.n H.sub.2n)--,
- R.sup.1 is H or C.sub.1-4 alkyl,
- n is 1 to 15,
- q is 2 to 4, and
- m is 1 to 15;
- and
- (ii) from 50 to 15 percent by weight of units derived from a monomer or a mixture of monomers selected from the group
- (CH.sub.2 .dbd.C(R)COZ(CH.sub.2).sub.r.sup.+ NR.sup.2 R.sup.3 R.sup.4)X.sup.-
- and
- CH.sub.2 .dbd.C(R)COZ(CH.sub.2).sub.r NR.sup.2 R.sup.3 (O)
- wherein
- R is H or CH.sub.3,
- R.sup.2 and R.sup.3 are each C.sub.1-4 alkyl, hydroxyethyl, benzyl or R.sup.2 and R.sup.3 together with the nitrogen atom form a morpholine, pyrrolidine or piperidine ring,
- R.sup.4 is H or C.sub.1-4 alkyl or R.sup.2, R.sup.3 and R.sup.4 together with the nitrogen atom form a pyridine ring,
- Z is --O-- or --NR.sup.4 --,
- r is 2 to 4, and
- X.sup.- is an anion.
23 more elements
Dependencies are inferred from the claim text.