Blends of fluoroplastics with polyetherketoneketone

• US 6,177,518 B1
• Filed: 06/15/1998
• Issued: 01/23/2001
• Est. Priority Date: 07/25/1997
• Status: Expired due to Term

• Current Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Original Assignee: E. I. du Pont de Nemours and Company (Corteva, Inc.)
• Inventors: Lahijani, Jacob
• Primary Examiner(s): Seidleck, James J.
• Assistant Examiner(s): Asinovsky, Olga
• Application Number:
  US09/094,942
• Time in Patent Office: 953 Days
• Field of Search: 525/199, 525/326.2, 525/418, 525/153, 524/544, 524/545, 524/546
• US Class Current: 525/199
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 2666/14 Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
• CPC Class Codes: C08L 27/12 containing fluorine atoms
• CPC Class Codes: C08L 27/18 Homopolymers or copolymers or tetrafluoroethene
• CPC Class Codes: C08L 71/00 Compositions of polyethers obtained by reactions forming an ether link in the main chain of polyacetals C08L59/00; of epoxy resins C08L63/00; of polythioether-ethers C08L81/02; of polyether-sulfones C08L81/06; Compositions of derivatives of such polymers
• CPC Class Codes: Y10T 428/139 Open-ended, self-supporting conduit, cylinder, or tube-type article
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers

Abstract

Compositions of melt-flowable fluoroplastic and poly(ether ketone ketone) are provided, wherein the either the fluoroplastic or the poly(ether ketone ketone) is the matrix polymer and the other polymer is the dispersed phase, to provide improved properties to the matrix polymer.

Claims

1. Composition comprising 5 to 95 wt % non-elastomeric melt-flowable fluoroplastic having crystallinity and complementally to total 100 wt %, 95 to 5 wt % polyetherketoneketone.

2. The composition of claim 1 wherein said polyetherketoneketone is dispersed in a matrix of said fluoroplastic.

3. The composition of claim 1 wherein said fluoroplastic is dispersed in a matrix of said polyetherketoneketone.

4. The composition of claim 1 and additionally containing filler.

5. The composition of claim 1 wherein the amount of said polyetherketoneketone present is 5 to 30 wt %.

6. The composition of claim 1 wherein the amount of said polyetherketoneketone present is 40 to 50 wt %.

7. The composition of claim 1 wherein the amount of said fluoroplastic present is 5 to 30 wt %.

8. The composition of claim 1 wherein said fluoroplastic is melt fabricable fluoroplastic.

9. The composition of claim 1 wherein said fluoroplastic comprises at least 10 wt % of melt-fabricable fluoroplastic, the remainder to total 100 wt % of said fluoroplastic being polytetrafluoroethylene micropowder.

10. Process comprising coextruding a composite tubing having an inner layer of melt fabricable fluoroplastic and an outer layer of the composition of claim 1.