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US 5,183,839 AGranted
Fluoropolymers and fluoropolymer coatings
AssigneeAllied-Signal Inc.
InventorShaul M. Aharoni
Life of this patent
Estimating the term…
Abstract
Copolymer compositions derived from (a) perfluroalkylalkyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) a hydroxyl-containing acrylate or methacrylate, in combination, can be cross-linked through internal esterification or anhydride formation. These product combine properties typical of fluorine-containing polymers with processability, including processability from solution.
Claims5
A solution in about equal volumes of tetrahydrofuran and 1,3-bis(trifluoromethyl)benzene of a polymeric composition comprising fluorinated copolymer of the formula
- --[--X.sub.x --Y.sub.t --Z.sub.u --]--
- wherein
- s, t and u represent weight proportions of the respective X, Y and Z units, and have values within the ranges of
- s=from about 0.5 to about 0.99;
- t=from about 0.005 to about 0.495;
- and
- u=from about 0.005 to about 0.495;
- with the the sum of s+t+u being 1;
- X represents units of the composition ##STR6## wherein R.sub.1 is H, --CH.sub.3 or mixtures thereof;
- p is 1 or 2;
- n is an integer of from about 1 to about 40;
- Y represents units of the composition ##STR7## wherein R.sup.2 is H, --CH.sub.3, or --CH.sub.2 COOH;
- Z represents units of this composition ##STR8## wherein R.sup.3 is H, --CH.sub.3, or --CH.sub.2 COOC.sub.m H.sub.2m+1, wherein m is an integer of from about 1 to about 4;
- and
- R.sup.4 is an alkylene bridging group, straight chain, branched or cyclic, having from 1 to about 8 carbon atoms;
- wherein the X, Y and Z units may be arranged in any sequence.
13 more elements
Dependencies are inferred from the claim text.