High performance polyaspartimide resin
AssigneeSpirit AeroSystems, Inc.
InventorsThomas Joseph Barnell, Tat Hung Tong, Andrew Karl Klein
Life of this patent
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Abstract
New polyaspartimide compositions and methods of forming and using those compositions arc provided. The compositions are formed by reacting a bismaleimide and diamine in a solvent-free environment. The resulting polyaspartimide comprising recurring monomers of The compositions have properties desirable for use as shape memory polymers as well as in composite products that are useful for building components present in airplanes.
Claims19
A method of forming a composition, said method comprising reacting a bismaleimide with a diamine in an environment that is substantially free of non-reactive solvents, said reacting resulting in the formation of a polyaspartimide.
A composition comprising a polyaspartimide having recurring monomers of
- where:
- X is selected from the group consisting of
- Y is selected from the group consisting of
- where n is 1 to about 10,
- said composition being substantially free of non-reactive solvents.
A composite product comprising a material infused with a composition comprising a polyaspartimide.
A shape memory polymer comprising a polyaspartimide and having:
- a Tg of at least about 150° C.;
- an elastic modulus at 25° C. of from about 2 GPa to about 5 GPa;
- and
- a % elongation of from about 5% to about 150%.
Dependencies are inferred from the claim text.