Flame retardant insulation compositions
AssigneeQuantum Chemical Corporation
InventorKoksal Tonyali
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Abstract
Improved flame retardant moisture curable insulation compositions are comprised of an ethylene-alkoxysilane copolymer, a halogenated anhydride and antimony trioxide provided. The compositions have good processability and can be moisture cured to provide products which meet all of the requirements for SAE J-1128 low tension primary cable. The halogenated anhydride imparts flame retardancy to the compositions and also promotes cure by catalyzing the hydrolysis/condensation reaction of the silane copolymer. Optionally there may be included in the composition antioxidants, silanol condensation catalysts, organic halogen containing flame retardant compounds and other conventional compounding ingredients.
Claims21
A flame retardant moisture curable composition comprising:
- (a) 30 to 98 weight percent olefin-alkoxy silane copolymer derived from an .alpha.-olefin having from 2 to 8 carbon atoms and 0.25 to 20 percent by weight, based on the weight of the copolymer of an unsaturated alkoxysilane of the formula
- R*--Si(R**).sub.n (Y).sub.3-n
- wherein R* is an ethylenically unsaturated hydrocarbon radical having from 2 to 6 carbon atoms, R** is a hydrocarbon radical having from 1 to 10 carbon atoms, Y is an alkoxy group having from 1 to 4 carbon atoms and n is an integer from 0 to 2;
- (b) 1 to 30 weight percent halogenated carboxylic acid anhydride;
- and
- (c) 1 to 20 weight percent antimony trioxide.
An electrical wire or cable consisting essentially of a metal conductor coated with 6 to 60 mils of a flame retardant insulation composition as defined in any one of the preceding claims.
Dependencies are inferred from the claim text.