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Crosslinked polyimides prepared from N-(3-ethynylphenyl)maleimideThe compound N-(3-ethynylphenyl)maleimide (NEPMI) was used to prepare thermally stable, glassy polyimides which did not exhibit glass transition temperatures below 500 C. NEPMI was blended with the maleimide of methylene dianiline (BMI) and heated to form the polyimide. NEPMI was also mixed with Thermid 600 R, a commercially available bisethynyl oligomeric material, and heated to form a thermally stable, glassy polyimide. Lastly, NEPMI was blended with both BMI and Thermid 600 R to form thermally stable, glassy polyimides.
Document ID
19930010199
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Gerber, Margaret K. (NASA Langley Research Center Hampton, VA, United States)
St.clair, Terry L. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
February 23, 1993
Subject Category
Nonmetallic Materials
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-528666
Patent Number: US-PATENT-5,189,127
Patent Application Number: US-PATENT-APPL-SN-801867
Patent Number: NASA-CASE-LAR-14774-1
Accession Number
93N19388
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-5,189,127|NASA-CASE-LAR-14774-1
Patent Application
US-PATENT-APPL-SN-528666|US-PATENT-APPL-SN-801867

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