Polyetherimide-fluorinated polyolefin blends

• US 4,433,104 A
• Filed: 03/18/1982
• Issued: 02/21/1984
• Est. Priority Date: 03/18/1982
• Status: Expired due to Term

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Giles, Harold F. Jr.
• Primary Examiner(s): Lieberman, Paul
• Application Number:
  US06/359,260
• Time in Patent Office: 705 Days
• Field of Search: 525/180, 525/184
• US Class Current: 525/180
• 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 77/00 Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 79/08 Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors

Abstract

Disclosed are blends of (a) a polyetherimide and (b) a thermoplastic fluorinated polyolefin, or copolymer thereof. The blends have good flexural strength and flexural modulus and have a higher impact strength than those associated with the polyetherimide components of the blends.

Claims

1. A composition comprising a blend of (a) a fluorinated polyolefin or copolymer thereof and (b) a polyetherimide which has the formula:

##STR13## where a represents a whole number in excess of 1, the group --O--A<

is selected from;

##STR14## R'"'"' being hydrogen, lower alkyl or lower alkoxy, Z is a member of the class consisting of (1) ##STR15## and (2) divalent organic radicals of the general formula;

##STR16## where X is a member selected from the class consisting of divalent radicals of the formulas, ##STR17## where q is 0 or 1, y is a whole number from 1 to 4, and R is a divalent organic radical selected from the class consisting of (1) aromatic hydrocarbon radicals having from 6-20 carbon atoms and halogenated derivatives thereof, (2) alkylene radicals and cycloalkylene radicals having from 2-20 carbon atoms, C.sub.(2-8) alkylene terminated polydiorganosiloxane, and (3) divalent radicals included by the formula ##STR18## where x is a whole number from 1 to 5 inclusive.

2. A composition in accordance with claim 1 wherein the fluorinated polyolefin includes a fluorinated polyethylene.

3. A composition in accordance with claim 2 wherein the fluorinated polyethylene has the repeating structural formula:

##STR19## where b is an integer in excess of 50 and Y₁ to Y₄, which may be the same or different, are selected from the group consisting of hydrogen, chlorine, bromine and fluorine, with the proviso that at least one of Y₁ to Y₄ is fluorine.

4. A composition in accordance with claim 3 wherein at least two of Y₁ to Y₄ are fluorine.

5. A composition in accordance with claim 4 wherein at least three of Y₁ to Y₄ are fluorine.

6. A composition in accordance with claim 5 where Y₁ to Y₄ are fluorine.

7. A composition in accordance with claim 1 wherein the polyetherimide is of the formula;

##STR20## and the divalent bonds of --O--Z--O-- radical are in the 3,3'"'"';

3,4'"'"';

4,3'"'"' or the 4,4'"'"' position.

8. A composition in accordance with claim 7 wherein Z is;

##STR21## and R is selected from;

##STR22##

9. A composition in accordance with claim 8 wherein the polyetherimide is of the formula:

##STR23##