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  • 专利标题:   Multilayer structure e.g. pipe for underwater device, comprises composite reinforcing layer comprising thermoplastic polymer having preset glass transition temperature, welded to outermost sealing layer, and excludes hydrogen from structure.
  • 专利号:   WO2021019180-A1, FR3099410-A1, FR3099410-B1, KR2022038769-A, CN114245771-A, BR112022001529-A2, EP4003720-A1, US2022243843-A1, JP2022542360-W
  • 发明人:   HOCHSTETTER G
  • 专利权人:   ARKEMA FRANCE, ARKEMA FRANCE, ARKEMA FRANCE, ARKEMA FRANCE
  • 国际专利分类:   B32B001/02, B32B001/08, B32B015/02, B32B015/088, B32B027/12, B32B027/28, B32B027/34, B32B027/36, B32B037/04, B32B037/06, B32B005/02, B32B007/027, B32B007/04, B29C070/02, B29D023/00, F16L011/04, B29C048/152, B29C063/00, B29C063/34, F16L009/147, F16L009/16, B29C070/16, B32B005/28, F16L011/10, F17C001/06
  • 专利详细信息:   WO2021019180-A1 04 Feb 2021 202115 Pages: 31 French
  • 申请详细信息:   WO2021019180-A1 WOFR051385 28 Jul 2020
  • 优先权号:   FR008668, BR11001529, CN80055605, KR706667

▎ 摘　　要

NOVELTY - A multilayer structure comprises a sealing layer, and composite reinforcing layer welded to the outermost adjacent sealing layer, and excludes hydrogen from the transport or storage of gas. The sealing layer comprises a composition comprising semi-crystalline thermoplastic polymer (I), and having fictive temperature (Tf) measured according to ISO 11357-3 of less than 280 degrees C, preferably less than 265 degrees C. The composite reinforcing layer comprises a fibrous material in the form of continuous fibers impregnated with a composition predominantly comprising at least one thermoplastic polymer (II), and having glass transition temperature (Tg) according to ISO 113573:2013 which is more than 20 degrees C than maximum temperature of the structure, preferably more than 100 degrees C. USE - Multilayer structure e.g. flexible pipe (claimed), reservoir, and tube used in underwater device for transporting or storing gas or for exploiting of oil or gas application under sea. ADVANTAGE - The multilayer structure has excellent decompression resistance for drying, durability of welded component, and adhesiveness between the liner and the composite, creep resistance, chemical resistance, and abrasion resistance. DETAILED DESCRIPTION - A multilayer structure comprises a sealing layer, and composite reinforcing layer welded to the outermost adjacent sealing layer, and excludes hydrogen from the transport or storage of gas. The sealing layer comprises a composition comprising semi-crystalline thermoplastic polymer of formula: P1i (I), and having fictive temperature (Tf) measured according to ISO 11357-3 of less than 280 degrees C, preferably less than 265 degrees C. The composite reinforcing layer comprises a fibrous material in the form of continuous fibers impregnated with a composition predominantly comprising at least one thermoplastic polymer of formula: P2j (II), and having glass transition temperature (Tg) according to ISO 113573:2013 which is more than 20 degrees C than maximum temperature of the structure, preferably more than 100 degrees C. i = 1-n; n = number of waterproofing layers; j = 1-m;and m = number of reinforcing layers. An INDEPENDENT CLAIM is included for manufacture of the multilayer structure, which involves welding the reinforcing layer to the sealing layer.