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US 8,525,028 B2Granted
Thermoplastic halogen-free flame retardant formulations
AssigneeDow Global Technologies LLC
InventorsStephen H. Cree, Gerrit Groot-Enzerink
Life of this patent
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Abstract
Highly-mineral-filled, halogen-free, flame-retardant compositions made from or containing a polypropylene thermoplastic elastomer, a polypropylene, a metal hydroxide filler, and a polar-monomer-grafted polyolefin elastomer compatibilizer. Such compositions can be employed in preparing various articles of manufacture, including extruded articles and coated conductors, such as cables.
Claims15
A halogen-free, flame-retardant composition comprising:
- (a) a propylene polymer;
- (b) a thermoplastic propylene/ethylene copolymer elastomer;
- (c) a polar-monomer grafted polyolefinic elastomer compatibilizer;
- and
- (d) a metal hydroxide filler,
- wherein said thermoplastic propylene/ethylene copolymer elastomer is composed of a majority of propylene with a minor amount of ethylene.
3 more elements
A halogen-free, flame-retardant composition comprising:
- (a) a propylene polymer;
- (b) a thermoplastic propylene/ethylene copolymer elastomer;
- (c) an organic peroxide;
- (d) a polar graftable monomer;
- and
- (e) a metal hydroxide filler,
- wherein said thermoplastic propylene/ethylene copolymer elastomer is composed of a majority of propylene with a minor amount of ethylene.
4 more elements
Dependencies are inferred from the claim text.