Fiber reinforced composite article using modified polyimide adhe

Details Fiber reinforced composite article using modified polyimide adhe Fiber reinforced composite article using modified polyimide adhe

1983-06-10

1984-04-24

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including grain, strips, or filamentary elements in...

264136, 264137, 264258, 428246, 428251, 428252, 428284, 4284735, B32B 512

Patent

active

044448236

ABSTRACT:
Modified polyimide adhesives useful for high efficiency bonding at moderate temperatures. Basically, the adhesives are prepared by reacting suitable quantities of an oxime, an aromatic tetracarboxylic acid dianhydride and an aliphatic tetracarboxylic acid dianhydride, esterifying the resulting bisimide with a reactive solvent esterifying agent and mixing therewith a suitable diamine. This copolyimide adhesive may be dried to a selected viscosity before or after coating onto one or both surfaces to be bonded together. When the surfaces are pressed together under moderate pressure and heated for a suitable period at a temperature in the range of about 230.degree. to 320.degree. C. an excellent, flexible bond is obtained, having high peel strength and excellent resistance to high temperatures.

REFERENCES:
patent: 4161477 (1979-07-01), Long et al.
patent: 4183838 (1980-01-01), Gagliani
patent: 4183839 (1980-01-01), Gagliani

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