THERMOPLASTIC RESIN FOAMED PRODUCT AND ITS MANUFACTURING METHOD

• Main Authors: UEDA NAOKI, IWASA KOICHIRO, SHIBAYAMA KOICHI, FUKAYA JUICHI, SEN HIROYOSHI
• Format: Patent
• Language: English
• Published: 16.10.2001
• Edition: 7
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

PROBLEM TO BE SOLVED: To provide a thermoplastic resin foamed product comprising a thermoplastic resin and a phyllosilicate in which foamed cells and the phyllosilicate are uniformly and finely dispersed. SOLUTION: A volume expandable gas or a heat decomposable blowing agent is allowed to be present between layers of the phyllosilicate in a composite comprising 100 pts.wt. thermoplastic resin and 0.1-50 pts.wt. phyllosilicate, and the gas is volume-expanded or the heat decomposable blowing agent is heat-decomposed to form foamed cells, resulting in a thermoplastic resin foamed product having an average interlaminar distance in the phyllosilicate, to be determined by X-ray diffraction measurement, of >=60 .