FLAME-RETARDANT RESIN COMPOSITION AND FLAME-RETARDANT RESIN MOLDING

• Main Authors: AOYAMA AKIO, NAGAI HISAO, KASAI KAZUO, NAKAMURA KAZUHIRO
• Format: Patent
• Language: English
• Published: 13.08.1996
• Edition: 6
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

PURPOSE: To obtain a flame-retardant resin composition excellent in heat resistance, impact resistance, thermal stability during molding, dimensional stability, and rigidity by compounding nylon-4,6 with a specific polybromostyrene in a given proportion. CONSTITUTION: This composition comprises 60-97wt.% nylon-4,6 (A) and 3-40wt.% polybromostyrene (B) which is obtained by polymerizing at least one bromostyrene monomer, has a number-average mol.wt. of 1×10 -9×10 and a weight-average mol.wt. to number-average mol.wt. ratio of 5 or lower, and preferably has a dibromostyrene unit content of 50wt.% or higher and a bromine content of 40-70wt.%. 1-200 pts.wt. fibrous or whiskery filler (e.g. glass fibers) is preferably added to 100 pts.wt. the sum of the components (A) and (B).