Fibers sized with polyetherketoneketones

Patent metadata

Field	Value
Publication number	US-10443189-B2
Application number	US-201816013996-A
Country	US
Kind code	B2
Filing date	Jun 21, 2018
Priority date	Feb 5, 2009
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

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.

First claim

What is claimed is:

1. 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.

2. The sized fiber of claim 1 , wherein said fiber is a monofilament.

3. The sized fiber of claim 1 , wherein said fiber is a multifilament.

4. The sized fiber of claim 1 , wherein said fiber has a diameter of 1 micron to 1 mm.

5. A reinforced polymer comprising a polymer matrix and the one or more sized fibers of claim 1 .

6. The reinforced polymer of claim 5 , wherein said polymer matrix is comprised of a thermoplastic selected from the group consisting of crystalline polyetherketone (PEK), crystalline polyethretherketone (PEEK), crystalline polyetherketoneketone (PEKK), polyetherethertherketone (PEEEK), polyetheretherketoneketone (PEEKK), polyetherketoneetheretherketone (PEKEEK), and polyetherketoneketoneketone (PEKKK), polyimides, polyetherimides, polamideimides, polysulfones, polyethersulfones, polyarylethers, polycarbonates, polyphenylene sulfides, polyarylenes (polyphenylenes), polyamides, polyphthalamides, and polyaromatic esters.

7. The reinforced polymer of claim 5 , where said polymer matrix is comprised of a crystalline poly(aryletherketone).

8. A fiber-reinforced composite comprising one or more sized fiber of claim 1 .

Assignees

• Arkema Inc

Inventors

• Bertelo Christopher A
• O'Brien Gregory S

Classifications

• C08J7/0427

  with only one layer of a composition containing a polymer binder (with more layers C08J7/042) · CPC title

• Y10T428/2916

  including boron or compound thereof [not as steel] · CPC title

• Y10T428/2942

  Plural coatings · CPC title

• Y10T428/2969

  Polyamide, polyimide or polyester · CPC title

• Y10T428/2967

  Synthetic resin or polymer · CPC title