Polyamidbasert preparat for fleksible rör inneholdende olje eller gass

• Main Authors: PEES, BERNARD, WERTH, MICHAEL, JACQUES, BERNARD
• Format: Patent
• Language: Norwegian
• Published: 05.09.2003
• Edition: 7
• Subjects: BLASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WEAPONS

Composition (I), comprises: a polyamide (PA) (70-96 wt.%) (preferably PA 11, PA 12, aliphatic polyamides (obtained by condensation of 6-12C aliphatic diamine and 9-12C aliphatic diacid) or copolyamides 11/12), where the polyamide contains an organic or mineral catalyst; a plasticizer (4-10%); an elastomer nitrile butadiene rubber (NBR) or hydrogenated-NBR (H-NBR) (0-25%), where the sum of plasticizer and elastomer is 4-30%. Composition comprises: a polyamide (PA) (70-96 wt.%) (preferably PA 11, PA 12, aliphatic polyamides (obtained by condensation of 6-12 carbon aliphatic diamine and 9-12 carbon aliphatic diacid) or copolyamides 11/12 (having more than 90% of 11 or more than 90% of 12), where the polyamide contains an organic or mineral catalyst (added during polycondensation); a plasticizer (4-10%); an elastomer nitrile butadiene rubber (NBR) or hydrogenated-NBR (H-NBR) (0-25%), where the sum of plasticizer and elastomer is 4-30%. An independent claim is also included for a pipe comprising a layer of (I).