Silicone-polyimides having improved flexibility can be obtained, by sequentially intercondensing organic diamine, aminoorgano terminated polydiorganosiloxane and aromatic bisanhydride. A decrease in flexural modulus and an increase in elongation percent is effected while flame retardance remains substantially unchanged.
Polycarbonate/polyphtalate carbonate blends exhibiting good flame resistance
申请人:GENERAL ELECTRIC COMPANY
公开号:EP0377210A2
公开(公告)日:1990-07-11
Disclosed are blends of (a) an aromatic brominated polycarbonate; and (b) a polyphthalatecarbonate. Preferably, the blends also contain an amount of a silicone-polyimide. The blends exhibit good flame resistance and low smoke generation.
A polyimide composition and a process to prepare polyimide resins with reduced plate out and mold deposits is described. During resin molding operations the low plate out resins show a longer period of operation between cleaning of equipment leading to more efficient operation.
In one aspect the present invention provides a storage medium for data, the storage medium comprising: a) a substrate, a physical portion of which comprises at least one polyimide, and b) at least one data layer on the substrate. The substrate comprising a polyimide exhibits low axial displacement and beneficial damping characteristics.