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Preparation Of Bis(3-Amino Propyl) Tetramethyl Disiloxane Pyromellitic Dianhydride Polyimide Disclosure Number: IPCOM000049669D
Original Publication Date: 1982-Jul-01
Included in the Prior Art Database: 2005-Feb-09

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Gleason, R Linde, H [+details]


The present invention provides a method of replacing the p dianiline group in a cured polyimide with a disiloxane, or a disilarylene, or disilalkylene group to improve certain properties of the polyimide. The cured polyimide is reacted with a diamino disiloxane or diamino disilarylene or a disilalkylene in a solvent such as n-methyl pyrrolidone. The reaction is as follows: (see original).