Reusable resins and composites
AssigneePolynt Composites USA, Inc.
InventorsOwen H. Decker, Robert M. Adams, Michael Allen Mathews
Life of this patent
Estimating the term…
Abstract
Polyfuran monomers having a structure of Formula I, II or III are combined with a polymaleimide monomer to form reusable resins. The reusable resins are used to form polymer articles and composite articles that also include fibrous reinforcing materials. The reusable resins are recoverable from a composite article or a polymer article and can be reused as subsequent resin-forming matrixes and composite articles or for subsequent polymer articles.
Claims23
A polyfuran monomer having a structure of Formula I, II or III:
- wherein R1 is an aliphatic, heteroaliphatic, cycloaliphatic, cycloheteroaliphatic, cyclo(hetero)aliphatic-(hetero)aliphatic, aromatic, aromatic-(hetero)aliphatic, heteroaromatic or heteroaromatic-(hetero)aliphatic group, all of which are optionally substituted;
- wherein R2 is an aliphatic, cycloaliphatic, cycloaliphatic-aliphatic, aromatic, aromatic-aliphatic, heteroaromatic or heteroaromatic-aliphatic group, all of which are optionally substituted;
- m is 0 or more;
- n is 1 or more;
- and
- p is 1 or more.
15-19. (canceled)
A method of making a polyfuran monomer comprising:
- reacting a furfuryl alcohol with a polyisocyanate to form a polyfuran monomer having at least two furan functionalities per polyfuran monomer.
24-29. (canceled)
A method of forming a composite article comprising:
- heating a polyfuran/polymaleimide copolymer to form a liquid resin or a melt resin;
- applying the liquid resin or the melt resin to a fibrous reinforcing material to form a malleable composite material;
- shaping the malleable composite material;
- solidifying the shaped composite material by cooling to a solidifying temperature;
- and
- annealing the shaped composite material.
32-48. (canceled)
Dependencies are inferred from the claim text.