US5068293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Naphthol-based epoxy resins, intermediates for the same, process for preparing the same, and epoxy resin compositions containing the same
Assignee: Nippon Steel Chemical and Materials Co Ltd
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Filing: 1990-08-30
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Granted: 1991-11-26
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Expires: 2010-08-30
Abstract
Abstract The invention relates to naphthol-based epoxy resins of the general formula (I) ##STR1## in which A is a naphthalene nucleus, R is hydrogen or methyl, and n is an integer from 0 to 15, naphthol aralkyl resins which are intermediates for said epoxy resins, a process for the preparation of said naphthol aralkyl resins, and epoxy resin compositions containing said naphthol-based epoxy resins which are highly heat- and moisture-resistant, possess excellent impact strength and other mechanical properties, and are useful for such applications as lamination, molding, casting, and adhesion.
Inventors
- 👤 Masashi Kaji
- 👤 Takanori Aramaki
- 👤 Norito Nakahara
- 👤 Yasuharu Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:43
CPC Classifications
C; C08; C08G; C08G59/00; C08G61/00; C08G61/02; C08G59/02; C08G59/04; C08G59/06; C08G59/063; C08G59/18; C08G59/20; C08G59/32; C08G59/3218
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
30 words
Naphthol-based epoxy resins of the general formula (I) ##STR6## in which A is a naphthalene nucleus, R is hydrogen or methyl, and n is an integer from 0 to 15.
Claim 2
Dependent Claim
30 words
Naphthol-based epoxy resins of the general formula (I) ##STR6## in which A is a naphthalene nucleus, R is hydrogen or methyl, and n is an integer from 0 to 15.
Claim 3
Dependent Claim
45 words
An epoxy resin composition comprising (a) naphthol-based epoxy resins of the general formula (I) ##STR7## in which A is a naphthalene nucleus, R is hydrogen or methyl, and n is an integer from 0 to 15, (b) a curing agent, and (c) a curing accelerator.
Claim 4
Dependent Claim
45 words
An epoxy resin composition comprising (a) naphthol-based epoxy resins of the general formula (I) ##STR7## in which A is a naphthalene nucleus, R is hydrogen or methyl, and n is an integer from 0 to 15, (b) a curing agent, and (c) a curing accelerator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |