Fluorine-containing copolymer composition and its production method

A manufacturing method and copolymer technology, applied in the direction of coating, etc., can solve problems such as color tone change, and achieve the effect of haze suppression

Active Publication Date: 2016-01-20
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when pigments are added to paint compositions to make colored paints, problems such as changes in color tone may occur

Method used

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  • Fluorine-containing copolymer composition and its production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0182] 587 g of mixed xylene A, 168 g of ethanol, 206 g of ethyl vinyl ether (EVE), 4-hydroxybutyl vinyl ether (HBVE) 129 g, 208 g of cyclohexyl vinyl ether (CHVE), 11 g of potassium carbonate, and 3.5 g of t-butyl peroxy tert-butyl valerate (PBPV), and the dissolved oxygen in the solution was removed by pressurizing with nitrogen, purging, and degassing.

[0183] Next, 660 g of chlorotrifluoroethylene (CTFE) was introduced, the temperature was gradually raised, and the reaction was continued while maintaining the temperature at 65°C. After 12 hours, the reactor was water-cooled to terminate the reaction. After cooling the reaction solution (the solution of the fluorinated copolymer (A)) to room temperature, unreacted monomers were purged, and the reactor was opened.

[0184] The resulting reaction solution (the solution of the fluorine-containing copolymer (A)) is transferred to a pressure filter equipped with No. 63 filter paper for viscous liquid, and after filtering (pre-...

Embodiment 2

[0190] 668 g of mixed xylene A prepared above, 188 g of ethanol, 195 g of 2-ethylhexyl vinyl ether (2EHVE), 4-hydroxybutyl vinyl ether (HBVE) 87g, cyclohexyl vinyl ether (CHVE) 272g, potassium carbonate 10g and tert-butyl peroxy tert-butyl valerate (PBPV) 3.5g, remove the dissolved in the solution by pressurizing, purging and degassing with nitrogen. oxygen.

[0191] Next, 503 g of chlorotrifluoroethylene (CTFE) was introduced, the temperature was gradually raised, and the reaction was continued while maintaining the temperature at 65°C. After 12 hours, the reactor was cooled with water to stop the reaction. After cooling the reaction solution (the solution of the fluorinated copolymer (A)) to room temperature, unreacted monomers were purged, and the reactor was opened.

[0192] The resulting reaction solution (the solution of the fluorine-containing copolymer (A)) is transferred to a pressure filter equipped with No. 63 filter paper for viscous liquid, and after filtering (...

Embodiment 3

[0198] 674 g of mixed xylene A, 190 g of ethanol, 308 g of ethyl vinyl ether (EVE), 4-hydroxybutyl vinyl ether (HBVE) 124 g, 13 g of potassium carbonate, and 3.5 g of t-butyl peroxy tert-butyl valerate (PBPV), and the dissolved oxygen in the solution was removed by pressurizing with nitrogen, purging, and degassing.

[0199] Next, 622 g of chlorotrifluoroethylene (CTFE) was introduced, the temperature was gradually raised, and the reaction was continued while maintaining the temperature at 65°C. After 12 hours, the reactor was cooled with water to stop the reaction. After cooling the reaction solution (the solution of the fluorinated copolymer (A)) to room temperature, unreacted monomers were purged, and the reactor was opened.

[0200] The resulting reaction solution (the solution of the fluorine-containing copolymer (A)) is transferred to a pressure filter equipped with No. 63 filter paper for viscous liquid, and after filtering (pre-filtering) potassium carbonate under a p...

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Abstract

The present invention relates to a fluorine-containing copolymer composition, which is a combination of a fluorine-containing copolymer (A) having a repeating unit based on a fluoroolefin and a repeating unit based on a monomer not having a fluorine atom, potassium carbonate, and an organic solvent A product wherein the content of potassium carbonate is 5 to 80 ppm in terms of K2O relative to the fluorinated copolymer (A).

Description

technical field [0001] The present invention relates to a fluorine-containing copolymer composition and a method for producing the same. Background technique [0002] The fluorine-containing copolymer composition is suitable for use as a coating resin. Coating resins are required to have good storage stability in a solution state. In addition, it is preferable that the resin solution is colorless and transparent. [0003] Patent Document 1 relates to a method for producing a fluorine-containing copolymer, and describes: making a monomer mixture containing a fluoroolefin and an alkyl vinyl ether in a polymerization medium containing a lower alkylbenzene and a component having a lower boiling point than the lower alkylbenzene Copolymerization is carried out in the presence of an alkali metal carbonate, thereby achieving smooth progress of the copolymerization reaction and storage stability of the varnish containing the resulting copolymer. Potassium carbonate is cited as an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/12C08F2/44C08F214/18C08K3/26
CPCC08F14/18C08F214/18C08F214/186C08F214/24C08F214/245C08K3/26C08K5/01C08K5/05C09D127/12C08L27/12C08F216/18C08F216/165C08F216/1416C08F2/44C08F2/06
Inventor 笠原洁原祐二
Owner ASAHI GLASS CO LTD
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