Laminate hose made of fluorocopolymer

A technology of copolymers and hoses, applied in lamination, hoses, lamination devices, etc., can solve problems such as insufficient copolymerization, and achieve excellent interlayer adhesion, excellent durability, and excellent heat resistance Effect

Active Publication Date: 2006-11-01
ASAHI GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for example, in the case of TFE, CF 2 = CFOCF 2 CF 2 CF 3 In the case of a terpolymer with itaconic anhydride as a monomer, as shown in Comparative Example 2 described below, its copolymerizability may not be sufficient

Method used

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  • Laminate hose made of fluorocopolymer
  • Laminate hose made of fluorocopolymer
  • Laminate hose made of fluorocopolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0083] The present invention will be described in further detail below in conjunction with examples. However, it should be understood that the present invention is not limited to these specific Examples. Unless otherwise stated, % means mass %.

[0084] The adhesive strength (interlaminar peel strength) of the film and the hose, the fuel permeability coefficient, and the NAH content were measured according to the following methods.

[0085] (i) The fuel permeability coefficient of the membrane (unit: g mm / m2 24 hours)

[0086] The fuel permeability coefficient of the fluorinated copolymer was measured according to the dish method described in JIS Z-0208. 9.5 to 10 grams of CE10 (volume ratio of isooctane:toluene:ethanol = 50 / 50 / 10) was added as fuel into a tray with a permeation area of ​​28.26 cm2. The cup was covered with a 100 micron thick film made of fluorocopolymer by thermocompression. From the mass loss of the disc after standing at 60°C for 10 days, the fuel perme...

preparation Embodiment 1

[0098] (1) Degas a polymerization vessel with an internal volume of 100 liters equipped with a stirrer, and then add 42.5 kg of 1,3-dichloro-1,1,2,2,3-pentafluoropropane (AK225cb, Asahi Glass Co., Ltd., hereinafter referred to as AK225cb), 2.125 kg CF 2 =CFO(CF 2 ) 3 F and 51 kg of HFP. Then, the temperature inside the polymerization vessel was raised to 50°C, and 4.25 kg of TFE was added to increase the pressure to 1.01 MPa / G. 340 cm3 of a 0.3% by mass peroxide (perfluorobutyryl) AK225cb solution was added as a polymerization initiator solution to initiate polymerization, and 340 cm3 of this polymerization initiator solution was added every 10 minutes.

[0099] During the polymerization, TFE was continuously fed to maintain the pressure at 1.01 MPa / G. In addition, 0.3% by mass of NAH (using 5-norbornene-2,3-diacid anhydride represented by Formula 1) AK225cb solution was continuously added in an amount equal to 0.1 moles based on the moles of TFE added during the polymeriz...

preparation Embodiment 2

[0105] (1) Degas the polymerization vessel used in Preparation Example 1, then add 23.1 kg of AK225cb, 2.3 kg of methanol, 0.96 kg of CF 2 =CFO(CF 2 ) 3 F, 61.5 kg of HFP and 3.85 kg of TFE. Then the temperature inside the polymerization vessel was raised to 50°C and the pressure was 1.17 MPa / G. 340 cm3 of an AK225cb solution of 0.3% by mass of di(perfluorobutyryl) peroxide was added as a polymerization initiator solution to initiate polymerization, and 340 cm3 of this polymerization initiator solution was added every 10 minutes. Also, during the polymerization, TFE was continuously fed to maintain the pressure at 1.17 MPa / G. In addition, 0.3% by mass of NAH (using 5-norbornene-2,3-diacid anhydride represented by Formula 1) AK225cb solution was continuously added in an amount equal to 0.1% by mole of the number of moles of TFE to be continuously fed during polymerization. After 4 hours and 30 minutes of polymerization initiation, when 8.5 kg of TFE was added, the temperatu...

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Abstract

A laminate hose comprising a laminate of a fluorocopolymer and a polyamide, wherein the fluorocopolymer comprises repeating units (a) based on tetrafluoroethylene and / or chlorotrifluoroethylene, repeating units (b) based on a cyclic hydrocarbon monomer having a dicarboxylic anhydride group and having a polymerizable unsaturated group in the ring, and repeating units (c) based on another fluoromonomer (excluding tetrfluoroethylene and chlorofluoroethylene) with contents of the repeating units (a) of from 50 to 99.89 mol%, the repeating units (b) of from 0.01 to 5 mol% and the repeating units (c) of from 0.1 to 49.99 mol% based on the total number of mols of the repeating units (a), (b) and (c), and has a flow coefficient of from 0.1 to 1,000 mm 3 / sec.

Description

technical field [0001] This invention relates to laminated hoses made from fluorocopolymers. More specifically, the present invention relates to laminated hoses comprising laminates of fluoropolymers and polyamides excellent in interlayer adhesion and fuel barrier properties. Background technique [0002] Fluorine-containing copolymers such as polytetrafluoroethylene, tetrafluoroethylene / perfluoro(alkyl vinyl ether) copolymer, and ethylene / tetrafluoroethylene copolymer (hereinafter sometimes referred to as fluororesin) have excellent chemical resistance, Heat resistance, weather resistance, and gas barrier properties are used in various fields such as the semiconductor industry and the aircraft and automobile industries. [0003] In recent years, from the standpoint of environmental protection, in developed countries such as North America, European countries, and Japan, regulations on the total emissions of fuel leaked from automobiles due to vaporization and permeation hav...

Claims

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Application Information

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IPC IPC(8): C08L27/18B29C47/06B32B37/28C08L27/12C08L77/00F16L11/04
CPCB32B1/08B32B27/08B32B27/322B32B27/325B32B27/34B32B2250/24B32B2307/306B32B2307/546B32B2307/712B32B2307/714B32B2307/7265B32B2597/00B32B2605/00C08F214/18C08F214/245C08F214/265F16L11/045F16L2011/047Y10T428/139Y10T428/1352Y10T428/1393Y10T428/3154Y10T428/31743
Inventor 船木篤千坂俊之神谷浩樹
Owner ASAHI GLASS CO LTD
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