EP0282096A2
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EP
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Poly(dinaphthyl arylene ether)and preparation thereof
Assignee: Goodrich Corp
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Filing: 1988-03-12
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Granted: —
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Expires: 2008-03-12
Abstract
Abstract When two 4-naphthoxyphenyl moieties are connected through a polar linking group, Y, it does not interfere with an oxidation process which results in dehydrogenative polymerization to yield polyarylene polyether (PAPE) polymers having a weight average mol wt greater than 10,000. Homo- and copolymers having a repeating unit in which a 4,4ʹ-di(1-naphthoxyphenyl) moiety is connected through its phenyl rings to a bivalent polar residue are descrbed. A specific monomer is selected from the group consisting of 4,4ʹ-di(1-naphthoxy)diphenyl sulfone (DNDPS, Y= SO₂) and, 4,4ʹ-di(1-naphthoxy)benzophenone (DNBP, Y= CO). Because the process provides thermoplastic PAPE polymers having a Tg in the range from about 250°C to about 350°C with excellent physical properties, the polymers are suitable for use in the fabrication of composites for aerospace vehicles subjected to elevated temperatures.
Inventors
- 👤 Virgil Percec
- 👤 Paul Peter Nicholas
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 22:20
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/48; C08G77/50; C08G77/52; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/70; C07C45/71; C08G61/00; C08G61/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
67 words
A substantially linear thermoplastic polyarylene polyether having a repeating unit represented by the structure: wherein, Y represents a divalent connecting radical selected from the group consisting of SO₂, C=O, S, O, -[O-SiR₂] O, R represents C₁-C₁₂ alkyl, C₆-C₁₀ aryl and C₇-C₁₈ aralkyl, m is an integer in the range from 1 to about 20, and, n is an integer in the range from 2 to about 500.
Claim 2
Dependent Claim
67 words
A substantially linear thermoplastic polyarylene polyether having a repeating unit represented by the structure: wherein, Y represents a divalent connecting radical selected from the group consisting of SO₂, C=O, S, O, -[O-SiR₂] O, R represents C₁-C₁₂ alkyl, C₆-C₁₀ aryl and C₇-C₁₈ aralkyl, m is an integer in the range from 1 to about 20, and, n is an integer in the range from 2 to about 500.
Claim 3
Dependent Claim
9 words
The polymer of claim 1 wherein Y is SO₂.
Claim 4
Dependent Claim
9 words
The polymer of claim 1 wherein Y is C=O.
Claim 5
Dependent Claim
21 words
The polymer of claim 1 having a weight average molecular weight Mw in the range from about 10,000 to about 200,000.
Claim 6
Dependent Claim
145 words
A process for preparing a substantially linear thermoplastic polyarylene polyether having a repeating unit consisting essentially of (1-naphthoxy)phenyl groups connected by a polar linking residue, said process comprising, (a) contacting a 4,4ʹ-di(1-naphthoxy)diphenyl monomer having the structure wherein, Y represents a divalent connecting radical selected from the group consisting of SO₂, C=O, S, O, and, -[O-SiR₂] O, R represents C₁-C₁₂ alkyl, C₆-C₁₀ aryl and C₇-C₁₈ aralkyl, and, m is an integer in the range from 1 to about 20, with an oxidizing agent selected from the group consisting of ferric chloride, cupric chloride, and an electrophilic catalyst in an oxidizing solvent, at a temperature in the range from above about 0°C but below a temperature at which substantial crosslinking occurs; and, (b) recovering a polymer having a repeating unit represented by the structure wherein, n represents an integer in the range from 2 to about 500.
Claim 7
Dependent Claim
145 words
A process for preparing a substantially linear thermoplastic polyarylene polyether having a repeating unit consisting essentially of (1-naphthoxy)phenyl groups connected by a polar linking residue, said process comprising, (a) contacting a 4,4ʹ-di(1-naphthoxy)diphenyl monomer having the structure wherein, Y represents a divalent connecting radical selected from the group consisting of SO₂, C=O, S, O, and, -[O-SiR₂] O, R represents C₁-C₁₂ alkyl, C₆-C₁₀ aryl and C₇-C₁₈ aralkyl, and, m is an integer in the range from 1 to about 20, with an oxidizing agent selected from the group consisting of ferric chloride, cupric chloride, and an electrophilic catalyst in an oxidizing solvent, at a temperature in the range from above about 0°C but below a temperature at which substantial crosslinking occurs; and, (b) recovering a polymer having a repeating unit represented by the structure wherein, n represents an integer in the range from 2 to about 500.
Claim 8
Dependent Claim
36 words
The process of claim 5 wherein said electrophilic catalyst is selected from the group consisting of aluminum chloride, antimony pentachloride and benzene sulfonic acid, and solvent is selected from the group consisting of nitrobenzene and m-dinitrobenzene.
Claim 9
Dependent Claim
16 words
The process of claim 5 wherein said oxidizing agent consists essentially of ferric chloride in nitrobenzene.
Claim 10
Dependent Claim
88 words
A thermoformed shaped article of a substantially linear thermoplastic polyarylene polyether (PAPE) having a repeating unit represented by the structure: wherein, Y represents a divalent connecting radical selected from the group consisting of SO₂, C=O, S, O, -[O-SiR₂] O, R represents C₁-C₁₂ alkyl, C₆-C₁₀ aryl and C₇-C₁₈ aralkyl, m is an integer in the range from 1 to about 20, and, n is an integer in the range from 2 to about 500, said PAPE having a Tg in the range from above about 200°C to about 350°C.
Claim 11
Dependent Claim
88 words
A thermoformed shaped article of a substantially linear thermoplastic polyarylene polyether (PAPE) having a repeating unit represented by the structure: wherein, Y represents a divalent connecting radical selected from the group consisting of SO₂, C=O, S, O, -[O-SiR₂] O, R represents C₁-C₁₂ alkyl, C₆-C₁₀ aryl and C₇-C₁₈ aralkyl, m is an integer in the range from 1 to about 20, and, n is an integer in the range from 2 to about 500, said PAPE having a Tg in the range from above about 200°C to about 350°C.
References Cited (Backward Citations)
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