Fluorothermoplastic polymer

Patent metadata

Field	Value
Publication number	US-10087322-B2
Application number	US-201515503109-A
Country	US
Kind code	B2
Filing date	Aug 11, 2015
Priority date	Aug 22, 2014
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

Described herein is a composition comprising a fluorothermoplastic polymer, wherein the fluorothermoplastic polymer is derived from: (a) 60-85 mol % tetrafluoroethene; (b) 2-12 mol % hexafluoropropene; (c) 10-30 mol % vinylidene fluoride; (d) 0.2 to 5 mol % of a bromine-containing monomer. Such compositions can be used in multilayer constructions in, for example, fuel hose applications.

First claim

What is claimed is:

1. A composition comprising a fluorothermoplastic polymer, wherein the fluorothermoplastic polymer is derived from:
(a) 60-85 mol % tetrafluoroethene;
(b) 2-12 mol % hexafluoropropene;
(c) 10-30 mol % vinylidene fluoride; and
(d) 0.2 to 5 mol % of a bromine-containing monomer, wherein the fluorothermoplastic polymer has a melting point of at least 150° C.

2. The composition of claim 1 , wherein the fluorothermoplastic polymer has an MFR of 1 to 100 g/10 min at 297° C. in case of a polymer with a melting point in the range of 150-250° C. and of 1 to 100 g/10 min at 372° C. in case of a polymer with a melting point above 250° C.

3. The composition of claim 1 , wherein the bromine-containing monomer is fluorinated.

4. The composition of claim 1 , wherein the bromine-containing monomer is selected from F 2 C═CHBr, F 2 C═CFBr, H 2 C═CH—CF 2 —CF 2 —Br, H 2 C═CH—CF 2 —Br, F 2 C═CF—O—(CF 2 ) x —Br, F 2 C═CF—O—CF(CF 3 )—CF 2 —O—(CF 2 ) x —Br, F 2 C═CF—CF 2 —O—(CF 2 ) x —Br, H 2 C═CH—CH 2 —Br, F 2 C═CF—O—CF 2 —CFBr—CF 3 , and combinations thereof, where x is 2, 3, 4, or 5.

5. The composition of claim 1 , wherein the fluorothermoplastic polymer is further derived from 0.1 to 5 mol % of a fluorinated allyl ether monomer and/or fluorinated vinyl ether monomer.

6. The composition of claim 1 , wherein the fluorothermoplastic is further derived from a fluorinated diallyl ether, a fluorinated divinyl ether, or a fluorinated allyl vinyl ether monomer.

7. The composition of claim 1 , wherein the fluorothermoplastic polymer has a permeation constant of less than 2.9 g mm/m 2 d when measured at 60° C. with CE10 fuel.

8. A multilayer article comprising:
a first polymer layer comprising the fluorothermoplastic polymer of claim 1 ; and
a second polymer layer wherein the second polymer layer is an elastomer,
wherein the first polymer layer is intimate contact with the second polymer layer.

9. The multilayer article of claim 8 , comprising an interface between the first polymer layer and the second polymer layer wherein the interface consists essentially of a first material having the composition of the first polymer layer and a second material having the composition of the second polymer layer.

10. The multilayer article of claim 8 , wherein the first polymer layer and the second polymer layer have an average peel strength of at least 4 lb/in.

11. The multilayer article of claim 8 , wherein the elastomer is selected from an acrylonitrile-butadiene elastomer or a hydrogenated elastomer thereof, a blended elastomer of acrylonitrile-butadiene elastomer and poly(vinyl chloride), a fluorine-containing elastomer, an epichlorohydrin elastomer, an ethene-propene elastomer, a chlorosulfonated polyethene elastomer, an acrylic elastomer, and combinations thereof.

12. The multilayer article of claim 8 , further comprising a third layer, wherein the third layer is bonded to the first polymer layer or the second polymer layer.

13. The multilayer article of claim 8 , wherein the multilayer article is a hose.

14. A method of making a composition comprising:
providing
(a) 60-85 mol % tetrafluoroethene monomer;
(b) 2-12 mol % hexafluoropropene monomer;
(c) 10-30 mol % vinylidene fluoride monomer; and
(d) 0.2 to 5 mol % of a bromine-containing monomer; and
polymerizing the monomers in an aqueous phase in the presence of an initiator.

15. The composition of claim 5 , wherein the fluorinated vinyl ether monomer is selected from perfluoro(methyl vinyl ether) (PMVE), perfluoro(ethyl vinyl ether) (PEVE), perfluoro(n-propyl vinyl ether) (PPVE-1), perfluoro(2-propoxypropyl vinyl ether) (PPVE-2), perfluoro(3-methoxy-n-propyl vinyl ether), perfluoro(2-methoxyethyl vinyl ether), CF3-(CF2)2-O—CF(CF3)-CF2-O—CF(CF3)-CF2-OCF═CF2(PPVE-3), and combinations thereof.

16. The composition of claim 5 , wherein the fluorinated allyl ether monomer is selected from perfluoro(methyl allyl ether), perfluoro(ethyl allyl ether), perfluoro(n-propyl allyl ether), perfluoro(2-propoxypropyl allyl ether), perfluoro(3-methoxy-n-propyl allyl ether), perfluoro(2-methoxyethyl allyl ether), CF3-(CF2)2-OCF(CF3)-CF2-O—CF(CF3)-CF2-O—CF2CF═CF2, and combinations thereof.

17. The multilayer article of claim 8 , wherein the second polymer layer comprises an adhesion promoter.

18. The multilayer article of claim 17 , wherein the adhesion promoter is selected from: DBU, a DBU salt, DBN, a DBN salt, and mixtures thereof.

19. The multilayer article of claim 8 , wherein the second polymer layer is substantially free of an adhesion promoter.

20. The multilayer article of claim 8 , wherein the multilayer article is a hose.

Assignees

• 3M Innovative Properties Co

Inventors

• Chen Lisa P
• Hintzer Klaus
• Kaspar Harald
• Lochhaas Kai H
• Muggli Mark W
• Schrooten Jens
• Sohlo Allen M
• Traunspurger Helmut
• Weilandt Karl D
• Zipplies Tilman C

Classifications

• B32B2605/08

  Cars · CPC title

• B32B2262/10

  Inorganic fibres · CPC title

• B32B2597/00

  Tubular articles, e.g. hoses, pipes · CPC title

• B32B27/08

  of synthetic resin · CPC title

• B32B2307/202

  Conductive · CPC title