Polysiloxane/polyimide copolymer blends
US7847023B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2007 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Jun 15, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L87/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.