US4404357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature naphthol novolak resin
Assignee: Shipley Co Inc
•
Filing: 1982-05-03
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Granted: 1983-09-13
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Expires: 2002-05-03
Abstract
Abstract Novel resins are disclosed that are the reaction products of an aldehyde and an aromatic alcohol mixture of naphthol, preferably 1-naphthol, and a phenol. The molar ratio of the naphthol to the phenol in the reaction mixture can vary from about 20 to 1 to 1 to 20. The resins are formed by condensing the aldehyde with the aromatic alcohol mixture in the presence of an acid catalyst where the molar ratio of the aromatic alcohol to aldehyde is less than 1. The resins of the invention are characterized by melt temperature higher than the melt temperatures of conventional novolak resins.
Inventors
- 👤 Paul Taylor
- 👤 Michael Gulla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:10
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
64 words
A resin comprising the product resulting from the condensation of an aldehyde and an aromatic alcohol mixture in the presence of an acid catalyst, said aromatic alcohol mixture comprising from 5 to 95 mole percent of a naphthol and from 95 to 5 mole percent of a phenol that is not a naphthol, said aromatic alcohol mixture being in molar excess of said aldehyde.
Claim 2
Dependent Claim
64 words
A resin comprising the product resulting from the condensation of an aldehyde and an aromatic alcohol mixture in the presence of an acid catalyst, said aromatic alcohol mixture comprising from 5 to 95 mole percent of a naphthol and from 95 to 5 mole percent of a phenol that is not a naphthol, said aromatic alcohol mixture being in molar excess of said aldehyde.
Claim 3
Dependent Claim
11 words
The resin of claim 1 where the naphthol is a 1-naphthol.
Claim 4
Dependent Claim
21 words
The resin of claim 2 where the naphthol comprises from 5 to 50 mole percent and the phenol comprises the balance.
Claim 5
Dependent Claim
21 words
The resin of claim 2 where the 1-naphthol comprises from 8 to 35 mole percent and the phenol comprises the balance.
Claim 6
Dependent Claim
12 words
The resin of claim 2 where the naphthol is an unsubstituted naphthol.
Claim 7
Dependent Claim
30 words
The resin of claim 2 where the naphthol is substituted with a member selected from the group of halo, alkyl having from 1 to 4 carbon atoms, hydroxyl and carboxyl.
Claim 8
Dependent Claim
29 words
The resin of claim 2 where the phenol is selected from the group of phenol, m-cresol, p-cresol, 2,4-xylenol, o-cresol 2,5-xylenol, 3,4-xylenol, 3,5-xylenol, thymol, carvacrol, p-phenylphenol, p-tert-butylphenol and mixtures thereof.
Claim 9
Dependent Claim
11 words
The resin of claim 7 where the phenol is a cresol.
Claim 10
Dependent Claim
17 words
The resin of claim 7 where the phenol is a mixture of a cresol and p-tert-butyl phenol.
Claim 11
Dependent Claim
11 words
The resin of claim 2 where the panel is unsubstituted phenol.
References Cited (Backward Citations)
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US2703792A
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US2927096A
Cited
US3111448A
Cited
US3290271A
Cited
US3345249A
Cited
US4022755A
Cited
US3957680A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |