FLAME RETARDANT RESIN COMPOSITION AND FLAME RETARDANT ELECTRIC WIRE AND FLAME RETARDANT SHRINKABLE TUBE USING SAID COMPOSITION

• Main Author: SAKAMOTO YOSHITO
• Format: Patent
• Language: English
• Published: 16.10.1989
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; ELECTRICITY; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; INSULATORS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; 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

PURPOSE:To obtain a flame retardant resin composition, excellent in low toxicity and smoking properties, heat resistance and electric characteristics and suitable as flame retardant electric wires and flame retardant heat shrinkable tubes by blending a polyolefin with an inorganic flame retardant and polyether imide. CONSTITUTION:A flame retardant resin composition obtained by blending (A) 100pts.wt. polyolefin resin with (B) 50-200pts.wt. inorganic flame retardant (e.g., aluminum hydroxide or antimony trioxide) and (C) >=10pts.wt., preferably <=200pts.wt. polyether imide expressed by the formula. A coating layer consisting of the above-mentioned flame retardant resin composition is formed on an electric wire and crosslinked to produce a flame retardant electric wire. Alternatively, a tubular molded body consisting of the flame retardant resin composition, crosslinked and drawn in the radial direction to produce a flame retardant heat shrinkable tube.