Fibers sized with polyethereketoneketones
AssigneeArkema Inc.
InventorsChristopher A. Bertelo, Gregory S. O'Brien
Life of this patent
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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.
Claims14
A sized fiber comprising a fiber having a coating of amorphous polyetherketoneketone, said coating comprising about 0.01 to about 10% by weight of the amount of coating in the sized fiber and having a thickness of about 1 micron to about 50 microns, wherein said coating surrounds said fiber surfaces,
- 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.
A pellet comprising sized fibers and one or more thermoplastics selected from the group consisting of polyaryletherketones (PAEK), polyetheretherketone (PEEK), polyetherketoneketone (PEKK), polyetheretheretherketone (PEEEK), polyetheretherketoneketone (PEEKK), polyetherketoneetheretherketone (PEKEKK), polyetherketoneketoneketone (PEKKK)), polyimides, polyetherimides, polyamideimides, polysulfones, polyethersulfones, polyarylethers, polycarbonates, liquid crystal polymers, polyphenylene sulfides, polyarylenes (polyphenylenes), polyamides, polyphthalamides, and polyaromatic esters;
- wherein said sized fibers comprise a fiber having a coating of amorphous polyetherketoneketone, said coating comprising about 0.01 to about 10% by weight of the amount of coating in the sized fibr and having a thickness of about 1 micron to about 50 microns, wherein said coating surrounds said fiber surfaces,
- 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.
A yarn, thread, strand roving, mat, mesh, scrim, woven fabric, or non-woven fabric comprising sized fibers, said sized fibers comprising a fiber having a coating of amorphous polyetherketoneketone, said coating comprising about 0.01 to about 10% by weight of the amount of coating in the sized fiber and having a thickness of about 1 micron to about 50 microns, wherein said coating surrounds said fiber surfaces,
- 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.
A method of making a sized fiber, said method comprising coating a fiber with a sizing composition comprising amorphous polyetherketoneketone, said coating comprising about 0.01 to about 10% by weight of the amount of coating in the sized fiber and having a thickness of about 1 micron to about 50 microns, wherein said coating surrounds said fiber surfaces, 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.