# US 4,395,513 A · High performance thermally stable poly(6-oxy-2-naphthoate)

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- Number: US 4,395,513 A
- Document ID: US4395513A
- Status: Granted
- Kind: A
- Application number: 06/366,679
- Filed: 1982-04-08
- Granted: 1983-07-26
- Earliest claimed: 1982-04-08
- Assignees: Celanese Corporation
- Inventors: Gordon W. Calundann
- Web page: https://patentgrep.com/patent/US4395513A

## CPC

- C08G 63/065: {the hydroxy and carboxylic ester groups being bound to aromatic rings}
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

An improved high performance thermally stable polymer is provided. Such polymer is composed primarily of recurring 6-oxy-2-naphthoyl moieties and is preferably a homopolymer of 6-oxy-2-naphthoyl moieties, i.e. poly(6-oxy-2-naphthoate). It is particularly suited for use in the formation of plasma spray coatings and compression or impact molded articles, and has been found to offer a thermal stability which is superior to that of poly(4-oxybenzoate). Small amounts (as described) of other ester-forming moieties and/or amide-forming moieties optionally may also be present.

## Claims

### Claim 1

A high performance thermally stable polymer consisting of recurring 6-oxy-2-naphthoyl moieties and 0 to approximately 3 mole percent of other ester-forming and/or amide-forming moieties which include at least one aromatic ring.

### Claim 2 (depends on 1)

A high performance thermally stable polymer according to claim 1 wherein said other ester-forming moieties are derived from a comonomer source selected from the group consisting of aromatic diols and aromatic diacids, aromatic hydroxyacids other than 6-hydroxy-2-naphthoic acid, and mixtures of the foregoing.

### Claim 3 (depends on 1)

A high performance thermally stable polymer according to claim 1 wherein said amide-forming moieties are of the structure --Y--Ar--Z-- where Ar is a divalent radical comprising at least one aromatic ring, Y is O, ##STR6## NH or NR, and Z is NH or NR, where R is an alkyl group of 1 to 6 carbon atoms or an aryl group.

### Claim 4 (depends on 1)

A high performance thermally stable polymer according to claim 1 wherein said other ester-forming and/or amide-forming moieties are symmetrically disposed.

### Claim 5 (depends on 1)

A compression molded article comprising the high performance thermally stable polymer of claim 1.

### Claim 6 (depends on 1)

An impact molded article comprising the high performance thermally stable polymer of claim 1.

### Claim 7 (depends on 1)

A molding compound comprising the high performance thermally stable polymer of claim 1 which incorporates approximately 1 to 60 percent by weight of a filler and/or reinforcing agent.

### Claim 8

A high performance thermally stable polymer consisting of recurring 6-oxy-2-naphthoyl moieties.

### Claim 9 (depends on 8)

A compression molded article comprising the high performance thermally stable polymer of claim 8.

### Claim 10 (depends on 8)

An impact molded article comprising the high performance thermally stable polymer of claim 8.

### Claim 11 (depends on 8)

A molding compound comprising the high performance thermally stable polymer of claim 8 which incorporates approximately 1 to 60 percent by weight of a filler and/or reinforcing agent.