Poly(arylene ether) composition and extruded articles derived therefrom
AssigneeSabic Innovative Plastics IP B.V.
InventorsHua Guo, Jian Guo, Kazunari Kosaka, Xiucuo Li
Life of this patent
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Abstract
A poly(arylene ether) composition includes a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene, a flame retardant, and a poly(arylene ether)-polysiloxane block copolymer reaction product that itself includes a poly(arylene ether)-polysiloxane block copolymer. The composition is useful for forming extruded articles, including insulation for wire and cable. The poly(arylene ether)-polysiloxane block copolymer contributes improved flame retardancy and, in many cases, improved physical properties to the composition.
Claims27
A composition, comprising:
- 5 to 55 weight percent of a poly(arylene ether)-polysiloxane block copolymer reaction product comprising
- a poly(arylene ether) homopolymer, and
- a poly(arylene ether)-polysiloxane block copolymer comprising
- a poly(arylene ether) block, and
- a polysiloxane block comprising, on average, 35 to 80 siloxane repeating units;
- wherein the poly(arylene ether)-polysiloxane block copolymer reaction product comprises 1 to 8 weight percent siloxane repeating units and 92 to 99 weight percent arylene ether repeating units;
- wherein the poly(arylene ether)-polysiloxane block copolymer reaction product is the product of a process comprising oxidatively copolymerizing a monomer mixture comprising a monohydric phenol and a hydroxyaryl-terminated polysiloxane;
- and
- wherein the poly(arylene ether)-polysiloxane block copolymer reaction product has a weight average molecular weight of at least 30,000 atomic mass units;
- 10 to 55 weight percent of a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene;
- and
- 2 to 25 weight percent of a flame retardant;
- wherein all weight percents are based on the total weight of the composition.
An extruded or injection molded article, comprising the product of extrusion molding or injection molding a composition comprising:
- 5 to 55 weight percent of a poly(arylene ether)-polysiloxane block copolymer reaction product comprising
- a poly(arylene ether) homopolymer, and
- a poly(arylene ether)-polysiloxane block copolymer comprising
- a poly(arylene ether) block, and
- a polysiloxane block comprising, on average, 35 to 80 siloxane repeating units;
- wherein the poly(arylene ether)-polysiloxane block copolymer reaction product comprises 1 to 8 weight percent siloxane repeating units and 92 to 99 weight percent arylene ether repeating units;
- wherein the poly(arylene ether)-polysiloxane block copolymer reaction product is the product of a process comprising oxidatively copolymerizing a monomer mixture comprising a monohydric phenol and a hydroxyaryl-terminated polysiloxane;
- and
- wherein the poly(arylene ether)-polysiloxane block copolymer reaction product has a weight average molecular weight of at least 30,000 atomic mass units;
- 10 to 50 weight percent of a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene;
- and
- 2 to 20 weight percent of a flame retardant;
- wherein all weight percents are based on the total weight of the composition.
Dependencies are inferred from the claim text.