Fibers sized with polyetherketoneketones
AssigneeArkema France
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.
Claims17
One or more sized carbon fibers, said sized carbon fibers being in continuous or discontinuous forms, said one or more sized carbon fibers having a polymeric coating comprising amorphous polyetherketoneketone and optionally comprising stabilizers, pigments, processing aids, and/or fillers, said polymeric coating having a thickness of at least about 1 micron and covering a surface of one or more carbon fibers, said polymeric coating comprising at least about 0.01 percent by weight of the sized fiber,
- 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 an isomer ratio of formula I:formula II (T:1) ranges from 55:45 to about 65:35.
A monofilament comprising one or more sized carbon fibers, said sized carbon fibers comprising one or more fibers having a polymeric coating comprising amorphous polyetherketoneketone and optionally comprising stabilizers, pigments, processing aids, and/or fillers, said coating having a thickness of at least about 1 micron and surrounding said one or more fibers, said coating comprising at least about 0.01 percent by weight of the sized fibers,
- 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 an isomer ratio of formula I:formula II (T:1) ranges from 55:45 to about 65:35.
Dependencies are inferred from the claim text.