Invention Grant
- Patent Title: Articles comprising a polyimide solvent cast film having a low coefficient of thermal expansion and method of manufacture thereof
- Patent Title (中): 具有热膨胀系数低的聚酰亚胺溶剂流延膜及其制造方法的制品
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Application No.: US11758807Application Date: 2007-06-06
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Publication No.: US08545975B2Publication Date: 2013-10-01
- Inventor: Kwok Pong Chan , Erik Hagberg , Tara J. Mullen , Roy Ray Odle
- Applicant: Kwok Pong Chan , Erik Hagberg , Tara J. Mullen , Roy Ray Odle
- Applicant Address: NL
- Assignee: Sabic Innovative Plastics IP B.V.
- Current Assignee: Sabic Innovative Plastics IP B.V.
- Current Assignee Address: NL
- Agency: Cantor Colburn LLP
- Agent Diderico van Eyl
- Main IPC: B32B5/16
- IPC: B32B5/16 ; B32B15/08 ; B32B27/28

Abstract:
A solvent cast film comprises a polyimide comprising structural units derived from polymerization of a dianhydride component comprising a dianhydride selected from the group consisting of 3,4′-oxydiphthalic dianhydride, 3,3′-oxydiphthalic dianhydride, 4,4′-oxydiphthalic dianhydride, and combinations thereof, with a diamine component comprising 4,4′-diaminodiphenylsulfone; wherein the polyimide has a glass transition temperature from 190° C. to 400° C.; and wherein the film has a coefficient of thermal expansion of less than 60 ppm/° C., a thickness from 0.1 to 250 micrometers, endless than 5% residual solvent by weight.
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