Cross-linked polyphenylene oxide

• US 4,468,501 A
• Filed: 06/30/1983
• Issued: 08/28/1984
• Est. Priority Date: 06/30/1983
• Status: Expired due to Fees

• Current Assignee: Permea Incorporated
• Original Assignee: Monsanto Company (Bayer AG)
• Inventors: Zampini, Anthony, Malon, Raymond F.
• Primary Examiner(s): Henderson, Christopher A.
• Application Number:
  US06/509,627
• Time in Patent Office: 425 Days
• Field of Search: 525/390, 525/905
• US Class Current: 525/390
• CPC Class Codes: B01D 71/52 Polyethers
• CPC Class Codes: B01D 71/5223 Polyphenylene oxide, phenyl ether polymers or polyphenylethers
• CPC Class Codes: C08G 65/485 Polyphenylene oxides

Abstract

Cross-linked polyphenylene oxide compositions comprise the reaction product of an alkyl halogenated phenylene oxide polymer and ammonia. The cross-linkage between phenylene groups is benzyl amine linkage represented by the structural formula --CH₂ NHCH₂ --. The cross-linked polyphenylene oxide is useful as a membrane.

Claims

1. A cross-linked phenylene oxide polymer composition comprising the reaction product of an alkyl halogenated phenylene oxide polymer and ammonia, wherein cross-linkage between phenylene groups is represented by the structural formula --CHRNHCHR--, where R is hydrogen or an alkyl.

2. The composition of claim 1 wherein the phenylene oxide polymer has at least one alkyl group having 1 to 3 carbon atoms, said alkyl groups being in an ortho position on the phenylene ring with respect to the oxygen of the phenylene oxide.

3. The composition of claim 2 wherein said at least one alkyl group is halogenated at the benzylic carbon atom.

4. The composition of claim 3 wherein the phenylene oxide has two methyl groups.

5. The composition of claim 4 wherein the methyl groups are halogenated with chlorine or bromine.

6. A cross-linked phenylene oxide polymer composition comprising the reaction product of brominated poly(2,6-dimethyl-1,4-phenylene oxide) and ammonia wherein there are from 0.1 to 2.0 benzylic bromine atoms per phenylene oxide unit, wherein thereis benzyl amine cross-linkage between phenylene groups represented by the structural formula --CH₂ NHCH₂ --.