POLYSILOXANE/POLYIMIDE COPOLYMER BLENDS
First Claim
1. A thermoplastic composition comprising:
- a polysiloxane/polyimide block copolymer having 5 to 50 weight percent polysiloxane, based on the total weight of the polysiloxane/polyimide block copolymer; and
a polyester/polyether block copolymer having 5 to 30 weight percent polyether content based on the total weight of the polyester/polyether block copolymer.
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Abstract
A thermoplastic composition comprises a polysiloxane/polyimide block copolymer and a polyester/polyether block copolymer. The polysiloxane/polyimide block copolymer has 5 to 50 weight percent (wt %) polysiloxane, based on the total weight of the polysiloxane/polyimide block copolymer. The polyester/polyether block copolymer has 5 to 30 wt % polyether based on the total weight of the polyester/polyether block copolymer. In some embodiments the polysiloxane/polyimide block copolymer is present in an amount of 75 to 99 wt % and the polyester/polyether block copolymer is present in an amount of 1 to 25 wt %, with the weight percent of the block copolymers based on the combined weight of the two block copolymers.
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Citations
20 Claims
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1. A thermoplastic composition comprising:
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a polysiloxane/polyimide block copolymer having 5 to 50 weight percent polysiloxane, based on the total weight of the polysiloxane/polyimide block copolymer; and a polyester/polyether block copolymer having 5 to 30 weight percent polyether content based on the total weight of the polyester/polyether block copolymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A thermoplastic composition comprising:
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a polysiloxane/polyimide block copolymer having 5 to 50 weight percent polysiloxane, based on the total weight of the polysiloxane/polyimide block copolymer; and a polyester/polyether block copolymer having 5 to 30 weight percent polybutyleneyether content based on the total weight of the polyester/polyether block copolymer wherein the polyetherimide-polysiloxane block copolymer is present in an amount of 75 to 99 weight percent and the polyester/polyether block copolymer is present in an amount of 1 to 25 weight percent based on the combined weight of the polyetherimide-polysiloxane block copolymer and the polyester/polyether block copolymer, wherein the polyester/polyether block copolymer has a polyether portion having a number average molecular weight of 1,000 to 10,000, and wherein the composition has less than 100 parts by weight of a halogenated aromatic solvent having a molecular weight of 110 to 600 per million parts by weight of the composition.
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Specification