Decabromo-Diphenyl Ethane Free Flame Retardant Thermoplastic Composition
AssigneeLANXESS Corporation
InventorsQingliang He, Patrick Jacobs, Christopher Simpson, Otto Mauerer, Heiko Tebbe
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Abstract
A method of replacing decabromodiphenyl ethane in a flame retardant thermoplastic composition by combining (a) a thermoplastic polymer; (b) an aromatic brominated flame retardant that is not decabromodiphenyl ethane; and (c) a synergist for the aromatic brominated flame retardant. A flame retardant thermoplastic composition that is free of decabromodiphenyl ethane contains (a) a thermoplastic polymer, (b) an aromatic brominated flame retardant that is not decabromodiphenyl ethane; and (c) a synergist for the aromatic brominated flame retardant.
Claims24
A flame retardant thermoplastic composition that is free of decabromodiphenyl ethane comprising:
- (a) a thermoplastic polyolefin polymer;
- (b) an aromatic brominated flame retardant selected from a Phenoxy-terminated carbonate oligomer of Tetrabromobisphenol A and a homopolymer of dibromostyrene;
- and
- (c) an aliphatic brominated flame retardant,
- wherein a ratio of the aromatic brominated flame retardant to the aliphatic brominated flame retardant is about 1:1 to about 3:1.
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A method of preparing a decabromodiphenyl ethane-free flame retardant thermoplastic composition comprising combining:
- (a) a thermoplastic polyolefin polymer;
- (b) an aromatic brominated flame retardant selected from Phenoxy-terminated carbonate oligomer of Tetrabromobisphenol A and a homopolymer of dibromostyrene;
- and
- (c) an aliphatic brominated flame retardant,
- wherein a ratio of the aromatic brominated flame retardant to the aliphatic brominated flame retardant is about 1:1 to about 3:1.
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A flame retardant thermoplastic composition that is free of decabromodiphenyl ethane comprising:
- (a) at least one polyolefin polymer selected from polypropylene and polyethyelene;
- (b) about 5 wt % to about 40 wt %, based on total weight of the thermoplastic composition, of a Phenoxy-terminated carbonate oligomer of Tetrabromobisphenol A;
- (c) about 1 wt % to about 20 wt %, based on total weight of the thermoplastic composition, of a brominated styrene/butadiene block copolymer;
- and
- (d) antimony and/or melamine polyphosphate,
- wherein a ratio of the Phenoxy-terminated carbonate oligomer of Tetrabromobisphenol A to the brominated styrene/butadiene block copolymer is about 1:1 to about 3:1,
- wherein the composition is unfilled.
Dependencies are inferred from the claim text.