Title:
COMPOSITION FOR FLAME-RETARDANT RESIN FOAM, FLAME RETARDER, FLAME-RETARDANT RESIN FOAM AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH05320399
Kind Code:
A
Abstract:
PURPOSE:To obtain the foam of reduced anisotropy in flame retardancy and lowered smoking properties by molding a composition containing a polyolefin resin and a flame-retarding material prepared by coating nuclear particles ofaflame retarder with a foaming agent, then heating the product to effect the cross-linking and the foaming. CONSTITUTION:A polyolefin such as a low-density polyethylene resin of 0.910 to 0.930g/cm<3> density and 0.5 to 50g/10min. melt flow rate is mixed with a flame retardant material which is prepared by coating the nuclear particles of a flame retarder of a halogenated phosphorus compound containing 30 to 80wt.% of phosphorus and halogen in total such as tri(tribromoneopentyl) phosphate with a foaming agent such as azodicarbonamide to give a composition for flame-retardant resin foam. The composition is extruded through a T-die into long sheets, then the products are heated to effect cross-linking and foaming to give the objective flame-retardant resin foam with reduced anisotropy in flame retardancy.
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Inventors:
KAMIJUKKOKU SHIGEO
WADA OSAMU
WADA OSAMU
Application Number:
JP23915791A
Publication Date:
December 03, 1993
Filing Date:
September 19, 1991
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
C08J9/06; C08K9/00; C08K9/04; C08K13/04; C08L23/04; (IPC1-7): C08J9/06
Attorney, Agent or Firm:
Yoshio Miyagawa (1 outside)