Organic solution of fluorinated copolymer having carboxylic acid groups
First Claim
1. A process for preparing a solution comprising mixing the polymer of fluorinated ethylenically unsaturated monomer selected from the group consisting of tetrafluoroethylene, trifluorochloroethylene, hexafluoropropylene, trifluoroethylene, vinylidene fluoride and vinyl fluoride and a functional monomer having a carboxylic acid group (--COOH group) with a hydrophilic organic solvent selected from the group consisting of alcohols, ketones, organic acids, aldehydes and amines, containing 0.001 to 30 weight percent of water to form a solution.
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Abstract
An organic solution of a fluorinated copolymer having carboxylic acid groups comprises the copolymer of fluorinated ethylenically unsaturated monomer and a functional monomer having carboxylic acid group (--COOH group) dissolved in a hydrophilic organic solvent with a small amount of water.
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Citations
5 Claims
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1. A process for preparing a solution comprising mixing the polymer of fluorinated ethylenically unsaturated monomer selected from the group consisting of tetrafluoroethylene, trifluorochloroethylene, hexafluoropropylene, trifluoroethylene, vinylidene fluoride and vinyl fluoride and a functional monomer having a carboxylic acid group (--COOH group) with a hydrophilic organic solvent selected from the group consisting of alcohols, ketones, organic acids, aldehydes and amines, containing 0.001 to 30 weight percent of water to form a solution.
- View Dependent Claims (2, 3, 4, 5)
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3. The process according to claim 1 wherein said fluorinated ethylenically unsaturated monomer is a fluorinated olefinic compound having the formula CF2 ═
- CZZ'"'"' wherein Z and Z'"'"' respectively represent --F, --Cl, --H or --CF3.
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4. The process according to claim 2 wherein said functional monomer is a fluorovinyl compound having the formula ##STR2## wherein p is 0 or 1;
- q is 0 or 1;
r is 0 or an integer of 1 to 8; and
B is --COOH.
- q is 0 or 1;
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5. The process according to claim 3 wherein said fluorinated ethylenically unsaturated monomer is tetrafluoroethylene.
Specification