Copolyetherketones

• US 4,704,448 A
• Filed: 11/25/1985
• Issued: 11/03/1987
• Est. Priority Date: 11/25/1985
• 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: Brugel, Edward G.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Moore, M. L.
• Application Number:
  US06/802,028
• Time in Patent Office: 708 Days
• Field of Search: 528/125, 528/194, 528/180, 528/182
• US Class Current: 528/125
• CPC Class Codes: C08G 61/127 derived from carbon dioxide, carbonyl halide, carboxylic acids or their derivatives
• CPC Class Codes: C08L 65/00 Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain C08L7/00 - C08L57/00, C08L61/00 take precedence; Compositions of derivatives of such polymers

Abstract

Novel copolyetherketones derived from diphenyl ether and aromatic diacids or diacid halides are disclosed where the diphenyl ether is present in a molar excess relative to the diacid or diacid halide chlorides of about 2 to 8%.

Claims

1. A copolyetherketone consisting essentially of diphenyl ether units and aromatic diacid units, wherein the diphenyl ether units are present in a molar excess relative to the diacid units of 2 to 8%.

2. A copolyetherketone of claim 1 where the molar excess of diphenyl ether units to diacid units is in the range of 2 to 6%.

3. A copolyetherketone of claim 1 where the molar excess of diphenyl ether units to diacid units is in the range of 2.5 to 4.5%.

4. A copolyetherketone of claim 1, 2 or 3 where the aromatic diacid units are selected from terephthalyl units, isophthalyl units and mixtures thereof.

5. A copolyetherketone of claim 4 where terephthalyl units and isophthalyl units are present in a ratio in the range of 80:

20 to 25;

75.

6. A copolyetherketone of claim 5 where the terephthalyl units and isophthalyl units are present in a ratio in the range of 70:

30 to 30;

70.

7. A copolyetherketone of claim 1 which contains (3/n) (0.25 to 33) mole %, based on total moles of diphenyl ether and diacid, of one or more branching agents selected from the group consisting of m-diphenoxybenzene and compounds of the formula R--(COX)_n and their related acids and anhydrides, where R is an aromatic moiety, X is a halogen, and n is an integer of from 3 to 6.

8. A copolyetherketone of claim 2 which contains (3n) (0.25 to 33) mole %, based on total moles of diphenyl ether and diacid, of one or more branching agents selected from the group consisting of m-diphenoxybenzene and compounds of the formula R--(COX)_n and their related acids and anhydrides, where R is an aromatic moiety, X is a halogen, and n is an integer of from 3 to 6.

9. A copolyetherketone of claim 3 which contains (3/n) (0.25 to 33) mole %, based on total moles of diphenyl ether and diacid, of one or more branching agents selected from the group consisting of m-diphenoxybenzene and compounds of the formula R--(COX)_n and their related acids and anhydrides, where R is an aromatic moiety, X is a halogen, and n is an integer of from 3 to 6.

10. A copolyetherketone of claim 4 which contains (3/n) (0.25 to 33) mole %, based on total moles of diphenyl ether and diacid, of one or more branching agents selected from the group consisting of m-diphenoxybenzene and compounds of the formula R--(COX)_n and their related acids and anhydrides, where R is an aromatic moiety, X is a halogen, and n is an integer of from 3 to 6.

11. A copolyetherketone of any of claims 7, 8, 9 or 10 where the branching agent is m-diphenoxybenzene or benzene tricarboxylic acid chloride.

12. A shaped article obtained by extruding, compression molding or injection molding a copolyetherketone of any of claims 1, 2, 3, 7 or 10.

13. A shaped article obtained by extruding, compression molding or injection molding a copolyetherketone of claim 4.

14. A composite structure consisting essentially of (a) a copolyetherketone of any of claims 1, 2, 3, 7 or 10 and (b) either a fibrous substrate or a particulate filler.

15. A composite structure consisting essentially of (a) a copolyetherketone of any of claim 4 and (b) either a fibrous substrate or a particulate filler.

16. A blend of (a) 90 to 10% by weight of a copolyetherketone of any of claims 1, 2, 3, 7 or 10 and (b) 10 to 90% by weight of one or more polymers selected from polysulfones, polysulfides, polyphenylene oxides, polyarylates, and polyetherimides.