Polyimides from tricyclo dodecane-3,6-diphenyl-1,8,4,5-tetracarboxylic acid dianhydride and tricyclo dodecane tetracarboxylic acid anhydride
AssigneeStandard Oil Company (Indiana)
InventorsTayseer S. Nimry, Ellis K. Fields
Life of this patent
Estimating the term…
Abstract
Novel polyimides, copolyimides and molding compositions are prepared from novel dianhydrides such as tricyclo[6.4.0.0.sup.2,7 ] dodecane-3,6-diphenyl-1,8,4,5-tetracarboxylic acid dianhydride and tricyclo[6.4.0.0.sup.2,7 ] dodecane-1,8,4,5-tetracarboxylic acid dianhydride. The novel polyimides are useful as engineering plastics. The novel dianhydrides are useful for the preparation of the polyimides. Other dianhydrides can be mixed with our novel dianhydrides to make novel copolyimides useful as engineering plastics.
Claims37
A polyimide consisting essentially of the following recurring structure:
- ##STR8## wherein R is a divalent aliphatic, cycloaliphatic, araliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon radical and Z is a hydrogen or benzene radical,
A polyimide consisting essentially of the following recurring structure:
- ##STR10##
A polyimide consisting essentially of the following recurring structure:
- ##STR11##
A polyimide consisting essentially of the following recurring structure:
- ##STR12##
A polyimide consisting essentially of the following recurring structure:
- ##STR13##
The polyimide consisting essentially of the following recurring structure:
- ##STR14##
A polyimide consisting essentially of the following recurring structure:
- ##STR15##
A copolyimide consisting essentially of the following recurring structure:
- ##STR17## wherein Z is a hydrogen or benzene radical, X is a divalent hydrocarbon radical, and X' is a tetravalent hydrocarbon radical.
Dependencies are inferred from the claim text.