Fibers sized with polyetherketoneketones
AssigneeArkema Inc.
InventorsChristopher A. Bertelo, Gregory S. O'Brien
Life of this patent
Estimating the term…
Abstract
Fibers sized with a coating of amorphous polyetherketoneketone are useful in the preparation of reinforced polymers having improved properties, wherein the amorphous polyetherketoneketone can improve the compatibility of the fibers with the polymeric matrix.
Claims8
A sized fiber comprising a continuous or discontinuous carbon or graphite fiber having a polymeric coating composition comprising amorphous polyetherketoneketone, said coating optionally comprising stabilizers, pigments, processing aids, and/or fillers, and having a thickness of about 1 micron to about 50 microns, wherein said coating surrounds said fiber,
- and wherein the amorphous polyetherketoneketone is comprised of repeating units represented by formulas I and II:
- -A-C(═O)—B—C(═O)— I
- -A-C(═O)—D—C(═O)— II
- wherein A is a p,p′-Ph-O-Ph- group, Ph is a phenylene radical, B is p-phenylene, and
- D is m-phenylene and the isomer ratio of formula I:formula II (T:I) ranges from about 55:45 to about 65:35.
Dependencies are inferred from the claim text.