Aqueous-phase catalyst compositions and method for preparing polyphenylene ether

Patent metadata

Field	Value
Publication number	US-2016159980-A1
Application number	US-201414585906-A
Country	US
Kind code	A1
Filing date	Dec 30, 2014
Priority date	Dec 5, 2014
Publication date	Jun 9, 2016
Grant date	—

Abstract

An aqueous-phase catalyst composition including a metal ion including copper, nickel, manganese or iron and a water-soluble linear polymer having a molecular weight ranging from 1,000 to 20,000 is provided. The metal ion and the water-soluble linear polymer have a weight ratio of 1:1 to 1:5. A method for preparing polyphenylene ether including providing the disclosed aqueous-phase catalyst composition and adding phenolic monomers to the aqueous-phase catalyst composition to proceed to a polymerization reaction to prepare polyphenylene ether is also provided.

First claim

1 . An aqueous-phase catalyst composition, comprising:
a metal ion comprising copper, nickel, manganese or iron; and a water-soluble linear polymer having a molecular weight ranging from 1,000 to 20,000, wherein the metal ion and the water-soluble linear polymer have a weight ratio of 1:1 to 1:5.

2 . The aqueous-phase catalyst composition as claimed in claim 1 , wherein the water-soluble linear polymer comprises polyethylene glycol (PEG), polyvinyl alcohol (PVA) or polyitaconic acid (PIA).

3 . The aqueous-phase catalyst composition as claimed in claim 1 , wherein the water-soluble linear polymer comprises poly(itaconic acid-co-acrylamide), poly(Ita-HEAMOBA-co-acrylic acid) or poly(Ita-HEAMOBA-co-acrylamide).

4 . The aqueous-phase catalyst composition as claimed in claim 1 , wherein the water-soluble linear polymer is represented by the following structural formula:
A x B y
wherein A comprises at least one carboxyl group or amide group, II comprises at least one of at least one carboxyl group and carboxyl group and amide group, x ranges from 1 to 100, and y ranges from 1 to 100.

5 . The aqueous-phase catalyst composition as claimed in claim 4 , wherein the water-soluble linear polymer has a molecular weight ranging from 4,000 to 8,500.

6 . The aqueous-phase catalyst composition as claimed in claim 4 , wherein the water-soluble linear polymer comprises poly(itaconic acid-co-acrylamide), poly(Ita-HEAMOBA-co-acrylic acid) or poly(Ita-HEAMOBA-co-acrylamide).

7 . The aqueous-phase catalyst composition as claimed in claim 1 , wherein the water-soluble linear polymer is represented by the following formula:

wherein R1 comprises carboxyl group or amide group, R2 comprises hydrogen, C1-C9 alkyl group or carboxyl group, R3 comprises carboxyl group or amide group, R4 comprises carboxyl group, A ranges from 1 to 100, and B ranges from 1 to 100.

8 . The aqueous-phase catalyst composition as claimed in claim 7 , wherein the water-soluble linear polymer has a molecular weight ranging from 4000 to 8500.

9 . The aqueous-phase catalyst composition as claimed in claim 7 , wherein the water-soluble linear polymer comprises poly(itaconie acid-co-acrylamide), poly(Ita-HEAMOBA-co-acrylic acid) or poly(Ita-HEAMOBA-co-acrylamide).

10 . The aqueous-phase catalyst composition as claimed in claim 1 , wherein the metal ion and the water-soluble linear polymer have a weight ratio of 1:1.5 to 1:4.5.

11 . The aqueous-phase catalyst composition as claimed in claim 1 , wherein the water-soluble linear polymer has a molecular weight ranging from 4,000 to 8,500.

12 . A method for preparing polyphenylene ether, comprising:
providing an aqueous-phase catalyst composition as claimed in claim 1 ; and adding phenolic monomers to the aqueous-phase catalyst composition to proceed to a polymerization reaction to prepare polyphenylene ether.

13 . The method for preparing polyphenylene ether as claimed in claim 12 , wherein the phenolic monomer is represented by the following formula:

wherein R1 and R2 independently comprises hydrogen, C1-C6 alkyl group or phenyl group.

14 . The method for preparing polyphenylene ether as claimed in claim 12 , wherein the polymerization reaction is an oxidative polymerization reaction.

15 . The method for preparing polyphenylene ether as claimed, in claim 12 , further comprising adding a surfactant to the aqueous-phase catalyst composition to proceed to the polymerization reaction.

16 . The method fix preparing polyphenylene ether as claimed in claim 12 , wherein the polymerization reaction is performed in an aqueous solvent and/or basic reaction conditions.

Assignees

• Ind Tech Res Inst

Inventors

• Lin Chung-Cheng
• Lee Hsuan-Wei
• Yang Wei-Ta
• Lin I-Hong
• Chen Chi-Wei
• Chen Hou Yuan

Classifications

• C08G65/44 Primary

  by oxidation of phenols · CPC title