# US 4,395,537 A · Polyether resin and method of manufacturing the same

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- Number: US 4,395,537 A
- Document ID: US4395537A
- Status: Granted
- Kind: A
- Application number: 06/296,209
- Filed: 1981-08-25
- Granted: 1983-07-26
- Earliest claimed: 1980-09-05
- Assignees: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
- Inventors: Kazuya Yonezawa; Masahiro Asada; Miyuki Matsuura
- Web page: https://patentgrep.com/patent/US4395537A

## CPC

- C08G 65/40: from phenols (I) and other compounds (II), e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group
- C08G 2650/44: containing acetal or formal groups
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

A polyether of the general formula: ##STR1## in which Ar stands for a divalent organic group of the aromatic series, R stands for CH.sub.3, CH.sub.3 CH.sub.2, Cl or Br, and n is an integer of 0 to 4. It contains at least 1 mol % of unit `B`. A method of manufacturing such a polyether is also disclosed.

## Claims

### Claim 1

A polyether comprising recurring units of the general formula: ##STR9## in which Ar stands for a divalent organic group of the aromatic series, R stands for a group selected from the group consisting of CH.sub.3, CH.sub.3 CH.sub.2, Cl and Br, and n is an integer of 0 to 4, said polyether containing at least 1 mol % of said unit `B`.

### Claim 2 (depends on 1)

A polyether as set forth in claim 1, having an intrinsic viscosity [.eta.] of at least 0.1 dl/g.

### Claim 3 (depends on 1)

A polyether as set forth in claim 1, wherein said organic group is represented by the general formula: ##STR10## in which X stands for ##STR11## --SO.sub.2 --, --CH.sub.2 --, --O-- or --S--.

### Claim 4 (depends on 1)

A polyether as set forth in claim 1, wherein said organic group is represented by the formula ##STR12##

### Claim 5 (depends on 1)

A polyether as set forth in claim 1, wherein said organic group is represented by the formula ##STR13##

### Claim 6

A method of manufacturing a polymer having recurring units of the general formula: ##STR14## in which Ar stands for a bivalent organic group of the aromatic series, R stands for a group selected from the group consisting of CH.sub.3, CH.sub.3 CH.sub.2, Cl and Br, and n is an integer of 0 to 4, said polymer containing at least 1 mol % of said unit `B`, said method comprising reacting an alkali metal salt of a difunctional phenol represented by the general formula MO--Ar--OM', in which M and M' each stand for an alkali metal, and Ar stands for a divalent aromatic group, with a mixture of xylylene and methylene dihalides.

### Claim 7 (depends on 6)

A method as set forth in claim 6, wherein said alkali metal salt comprises an aqueous solution of sodium or potassium hydroxide containing said difunctional phenol, and is reacted with said halide mixture in the presence of a phase transfer catalyst.

### Claim 8 (depends on 7)

A method as set forth in claim 7, wherein said catalyst comprises an oil-soluble quaternary ammonium salt.

### Claim 9 (depends on 7)

A method as set forth in claim 7, wherein said catalyst comprises a quaternary phosphonium salt.