Title:
FLAME-RETARDANT RUBBER COMPOSITION FOR TIRE
Document Type and Number:
Japanese Patent JPH05214172
Kind Code:
A
Abstract:
PURPOSE:To provide the subject composition having specific critical oxygen index and flame-retardant content, containing a flame-retardant consisting of a combination of a halogenated hydrocarbon thermoplastic polymer and a metal oxide and capable of imparting fire-preventing function to a tire without lowering the performance of the tire. CONSTITUTION:The objective flame-retardant rubber composition for tire having a critical oxygen index of 19.8-27.5 is produced by compounding (A) a natural rubber, etc., with (B) rubber chemicals such as carbon black, stearic acid, ZnO sulfur, vulcanization accelerator and antioxidant and (C) a flame-retardant consisting of a combination of a halogenated hydrocarbon thermoplastic polymer and a metal oxide. The total amount of the flame-retardant is <=25.0wt.% based on the produced flame-retarded rubber composition. The halogenated hydrocarbon thermoplastic polymer is polyvinyl chloride, chlorinated polyolefin, etc., having a halogen content of 30-80wt.%, a softening point of >=70 deg.C and a melt- viscosity of >=1,000poise at 150 deg.C. The metal oxide is antimony trioxide, MgO, etc.
Inventors:
YAGAWA KAZUO
YAMAGISHI JUNICHI
HACHITANI KAZUO
HASHIMOTO TAKATSUGU
YAMAGISHI JUNICHI
HACHITANI KAZUO
HASHIMOTO TAKATSUGU
Application Number:
JP4772192A
Publication Date:
August 24, 1993
Filing Date:
February 05, 1992
Export Citation:
Assignee:
BRIDGESTONE CORP
International Classes:
C08L15/02; C08L7/00; C08L21/00; C08L27/06; C08L27/22; C08L27/24; (IPC1-7): C08L15/02; C08L21/00; C08L27/06; C08L27/24
Attorney, Agent or Firm:
Hiromitsu Fujimoto (2 outside)