Fluorocopolymer and its applications

A technology of copolymer and tetrafluoroethylene, applied in coating, layered products, transportation and packaging, etc., can solve problems such as insufficient copolymerization ability, and achieve good interlayer adhesion performance, good heat resistance, and good fuel shielding performance effect

Active Publication Date: 2006-05-03
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with this combination of monomers, so

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0066] Example 1

[0067] Remove the air in a 1.2-liter polymerization autoclave equipped with a stirrer, and then add 1131 g of 1,3-dichloro-1,1,2,2,3-pentafluoropropane (manufactured by Asahi Glass Co., Ltd., below Called AK225cb) and 120.1 grams of CF 2 =CFO(CF 2 ) 3 F. Then the inside of the polymerization autoclave was heated to 50°C, 73 g of TFE was added, and the pressure was increased to 0.43 MPa / G. One cubic centimeter of AK225cb solution containing 0.1% by mass (perfluorobutyryl) peroxide was added as a polymerization initiator solution to initiate polymerization, and thereafter 1 cubic centimeter of this polymerization initiator solution was added every 10 minutes. In addition, TFE was continuously added to maintain the pressure at 0.43 MPa / G during the polymerization process. In addition, the AK225cb solution containing 0.3% by mass of NAH was continuously added in an amount equal to 0.1 mol% of the molar amount of TFE added during the polymerization process. Five hour...

Example Embodiment

[0071] Example 2

[0072] The air in the polymerization autoclave used in Example 1 was removed, and then 500AK225cb, 600 g of HFP and 50 g of TFE were added, and the inside of the polymerization autoclave was heated to 50°C. The pressure becomes 0.98 MPa / G. One cubic centimeter of AK225cb solution containing 0.25% by mass of bis(perfluorobutyryl) peroxide was added as a polymerization initiator solution to initiate polymerization, and thereafter 1 cubic centimeter of this polymerization initiator solution was added every 10 minutes. In addition, TFE was continuously added to maintain the pressure at 0.98 MPa / G during the polymerization process. In addition, the AK225cb solution containing 0.3% by mass of NAH was continuously added, and the addition amount was equal to 0.1 mol% of the continuously added TFE molar amount. 4 hours and 20 minutes after the initiation of the polymerization, 50 g of TFE had been added at this time, the temperature in the polymerization autoclave was lo...

Example Embodiment

[0076] Example 3

[0077] Remove the air in the polymerization autoclave used in Example 1, and then add 500AK225cb, 600g HFP, 25g CF 2 =CFO(CF 2 ) 3 F and 50 g of TFE, and heated the inside of the polymerization autoclave to 50°C. The pressure becomes 0.96 MPa / G. One cubic centimeter of AK225cb solution containing 0.25% by mass of bis(perfluorobutyryl) peroxide was added as a polymerization initiator solution to initiate polymerization, and thereafter 1 cubic centimeter of this polymerization initiator solution was added every 10 minutes. The TFE is continuously added to maintain the pressure at 0.96 MPa / G during the polymerization process. In addition, the AK225cb solution containing 0.3% by mass of NAH was continuously added, and the addition amount was equal to 0.1 mol% of the continuously added TFE molar amount. 4 hours and 40 minutes after the initiation of the polymerization, 50 g of TFE had been added at this time, the temperature in the polymerization autoclave was lowere...

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Abstract

A fluorine-containing copolymer comprising a repeating unit (a) based on tetrafluoroethylene and/or chlorotrifluoroethylene, a repeating unit based on a cyclic hydrocarbon monomer comprising a dicarboxylic anhydride group and a bridging ring polymerizable unsaturated group (b) and recurring units (c) based on other monomers (excluding tetrafluoroethylene, chlorotrifluoroethylene and said cyclic hydrocarbon monomers), with said recurring units (a), (b) and (c) Based on the total molar weight, the content of repeating unit (a) is 50-99.89 mol%, the content of repeating unit (b) is 0.01-5 mol%, and the content of repeating unit (c) is 0.1-49.99 mol%. , the volume flow rate of the fluorine-containing copolymer is 0.1-1000 cubic millimeters per second, and the present invention also relates to a laminate and a coated product. The fluorocopolymer has excellent adhesion, heat resistance, weather resistance, stress crack resistance and fuel barrier properties. The laminates have excellent interlayer adhesion and fuel barrier properties. The coated product has excellent heat resistance, chemical resistance, oil resistance, weather resistance, abrasion resistance and lubricity.

Description

technical field [0001] The invention relates to a fluorine-containing copolymer and its application. Background technique [0002] Fluoropolymers such as polytetrafluoroethylene, tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymer, and ethylene / tetrafluoroethylene copolymer can be used in various fields, such as the semiconductor industry and the automobile industry. [0003] Fluoropolymers have excellent properties such as heat resistance, chemical resistance, weather resistance, gas barrier properties, etc., but their adhesion to other materials is insufficient. For example, in order to bond them to synthetic resins, metals, metal oxides, glass, ceramics, etc., it is common to use, for example, subjecting the surface of the fluoropolymer to corona discharge treatment or sodium corrosion treatment, and then applying an adhesive agent. for bonding. The disadvantage of this bonding method is that the process is troublesome and the yield is low, and it is desired to d...

Claims

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Application Information

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IPC IPC(8): C08L27/18B32B27/30C08L27/24C09D127/18
CPCB32B27/08B32B27/322B32B2250/24B32B2255/10B32B2255/26B32B2274/00B32B2307/306B32B2307/54B32B2307/712B32B2307/714B32B2307/7265B32B2605/00C08F214/24C08F214/26Y10T428/31938Y10T428/31725Y10T428/31721Y10T428/31855Y10T428/31935Y10T428/31507Y10T428/31786Y10T428/3154C08F214/18
Inventor 船木笃神谷浩树相田茂千坂俊之
Owner ASAHI GLASS CO LTD
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