FIBER-REINFORCED RESIN SHEET

• Main Authors: YAMANA YOSHIHIRO, KOMORI SHINJI, YAMASHITA SADAO
• Format: Patent
• Language: English
• Published: 14.02.1992
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PURPOSE:To obtain the subject sheet capable of stamping molding by containing a fiber reinforcing material in a thermoplastic polyurethane resin substrate prepared by polymerizing a polyester polyol containing specific alkanediol units with a polyisocyanate. CONSTITUTION:The objective sheet is obtained by containing a fiber reinforcing material (e.g. glass fiber or carbon fiber having preferably >=10mm fiber length) in a resin substrate composed of a thermoplastic polyurethane prepared by polymerizing a polyester polyol preferably containing >=70mol% (based on the whole diol units) alkanediol units expressed by the formula [(m) is 1-5; (n) is 1-3; (m+n) is 2-6] with a polyisocyanate (e.g. 4,4'-diphenylmethane diisocyanate). The aforementioned sheet is capable of stamping molding into molded products excellent in transparency, mechanical performance and cold resistance.