| abstract |
PURPOSE:The titled composition which scarecely evolves noxious gases during burning, comprising a polyolefin synthetic rubber, an organopolysiloxane, a bromine-containing flame retardant and/or red phosphorus, Al or Mg hydroxide, and ZnCO3 and/or MnCO3. CONSTITUTION:100pts.wt. polyolefin synthetic rubber (e.g., acrylonitrile/butadiene copolymer) is mixed with 1-100pts.wt. organopolysiloxanes of formula I and/or II[wherein R is an (un)substituted monovalent hydrocarbon group, alkoxyl, or hydroxyl group, m>=100, n>=2, and k and n satisfy n/k=0.4-1.2], 1-100pts.wt. bromine-containing flame retardant (e.g., decaboromodiphenyl) and/or red phosphorus, 5-200pts.wt. Al or Mg hydroxide, and 0.5-20pts.wt. ZnCO3 and/or MnCO3. |