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US5266673A
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Process for producing a hydroxy-substituted poly(phenylene ether) resin
Assignee: Mitsubishi Chemical Corp
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Filing: 1992-05-15
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Granted: 1993-11-30
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Expires: 2012-05-15
Abstract
Abstract A hydroxy-substituted poly(phenylene ether) resin can be produced by copolymerizing from 1.5 to 8 mol % of a phenol compound selected from those represented by the following formulae (a), (b), (c), (d), and (e): ##STR1## and from 98.5 to 92 mol % of a phenol compound of the following formula (f): ##STR2## The hydroxy-substituted poly(phenylene ether) resin shows excellent compatibility with a polyamide, a polycarbonate, a poly(butylene terephthalate), a poly(phenylene sulfide), and is useful as a copatibilizer or a modified resin for engineering plastics.
Inventors
- 👤 Toru Tsukahara
- 👤 Hiromi Nishimura
- 👤 Mitsutoshi Aritomi
- 👤 Yusuke Arashiro
- 👤 Shinichi Yamauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:56
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/06; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/44; C08G65/48; C08G65/485; C08L71/00; C08L71/08; C08L71/10; C08L71/12; C08L71/123; C08L71/126; C08L63/00; C08L67/00; C08L69/00; C08L77/00; C08L81/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
52 words
A process for producing a hydroxy-substituted poly(phenylene ether) resin having a number-average polymerization degree of from 25 to 400 which comprises copolymerizing: (A) 1.5 to 8 mol % of a monomer selected from the group consisting of 2-(3-hydroxypropyl)-6-methylphenol, 2-(4-hydroxybutyl)-6-methylphenol, 2-(2,3-dihydroxypropyl)-6-methylphenol, 2-(3-hydroxy-2-methylpropyl)-6-methylphenol, and 2-(1-ethyl-2-hydroxyethyl)-6-methylphenol; and (B) 98.5 to 92 mol % of 2,6-dimethylphenol.
Claim 2
Dependent Claim
52 words
A process for producing a hydroxy-substituted poly(phenylene ether) resin having a number-average polymerization degree of from 25 to 400 which comprises copolymerizing: (A) 1.5 to 8 mol % of a monomer selected from the group consisting of 2-(3-hydroxypropyl)-6-methylphenol, 2-(4-hydroxybutyl)-6-methylphenol, 2-(2,3-dihydroxypropyl)-6-methylphenol, 2-(3-hydroxy-2-methylpropyl)-6-methylphenol, and 2-(1-ethyl-2-hydroxyethyl)-6-methylphenol; and (B) 98.5 to 92 mol % of 2,6-dimethylphenol.
Claim 3
Dependent Claim
34 words
The process according to claim 1, wherein said monomer of (A) supplies a structural unit selected from the group consisting of: ##STR13## and said monomer (B) supplies a structural unit of the formula ##STR14##
Claim 4
Dependent Claim
12 words
A hydroxyl-substituted poly(phenylene ether) resin prepared by the process of claim 1.
References Cited (Backward Citations)
FR1550846A
Cited
DE3704899A1
Cited
JPH0243234A
Cited
JPH0251555A
Cited
EP0368413A2
Cited
EP0382547A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-29 | 2005-05-31 | 2005-11-30 | $7700.00 | Window Closed / Lapsed |