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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, sometimes the copolymerizability is insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Air was removed from a polymerization autoclave equipped with a stirrer and an inner capacity of 1.2 liters, and then 1131 g of 1,3-dichloro-1,1,2,2,3-pentafluoropropane (manufactured by Asahi Glass Co., Ltd., hereinafter called AK225cb) and 120.1 grams of CF 2 =CFO(CF 2 ) 3 F. The inside of the polymerization autoclave was then heated to 50°C, 73 grams of TFE was added, and the pressure was increased to 0.43 MPa / G. 1 cm3 of an AK225cb solution containing 0.1% by mass of (perfluorobutyryl) peroxide was added as a polymerization initiator solution to initiate polymerization, and thereafter 1 cm3 of this polymerization initiator solution was added every 10 minutes. In addition, TFE was continuously fed to maintain the pressure at 0.43 MPa / G during the polymerization. In addition, an AK225cb solution containing 0.3% by mass of NAH was continuously added in an amount equal to 0.1 mol% of the mole amount of TFE added during the polymerization. Five hours after initiatio...

Embodiment 2

[0072] The air in the polymerization autoclave used in Example 1 was removed, then 500AK225cb, 600 g of HFP and 50 g of TFE were charged, and the inside of the polymerization autoclave was heated to 50°C. The pressure becomes 0.98 MPa / G. 1 cm3 of an AK225cb solution containing 0.25% by mass of bis(perfluorobutyryl) peroxide was added as a polymerization initiator solution to initiate polymerization, and 1 cm3 of this polymerization initiator solution was added every 10 minutes thereafter. In addition, TFE was continuously fed to maintain the pressure at 0.98 MPa / G during the polymerization. In addition, an AK225cb solution containing 0.3% by mass of NAH was continuously added in an amount equal to 0.1 mol% of the continuously added molar amount of TFE. Four hours and 20 minutes after initiation of the polymerization, at which time 50 g of TFE had been added, the temperature in the polymerization autoclave was lowered to room temperature while unreacted monomers were vented. ...

Embodiment 3

[0077] Remove the air in the polymerization autoclave used in Example 1, then add 500AK225cb, 600 grams of HFP, 25 grams of CF 2 =CFO(CF 2 ) 3 F and 50 g of TFE, and the inside of the polymerization autoclave was heated to 50°C. The pressure becomes 0.96 MPa / G. 1 cm3 of an AK225cb solution containing 0.25% by mass of bis(perfluorobutyryl) peroxide was added as a polymerization initiator solution to initiate polymerization, and 1 cm3 of this polymerization initiator solution was added every 10 minutes thereafter. TFE was continuously fed to maintain the pressure at 0.96 MPa / G during the polymerization. In addition, an AK225cb solution containing 0.3% by mass of NAH was continuously added in an amount equal to 0.1 mol% of the continuously added molar amount of TFE. Four hours and 40 minutes after initiation of the polymerization, at which point 50 g of TFE had been added, the temperature in the polymerization autoclave was lowered to room temperature while unreacted monomers...

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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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