US4996284A
Expired / Lapsed
US
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Novel epoxy sulfonamide-based resins, a process for their preparation and use of same
Assignee: Empak Inc
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Filing: 1989-04-24
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Granted: 1991-02-26
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Expires: 2009-04-24
Abstract
Abstract A process for the preparation of a sulfonamide-based epoxy resinous composition, which includes the step of reacting a sulfonamide compound with a resinous composition containing a plurality of epoxide groups in the presence of a Lewis acid, is disclosed. The epoxy sulfonamide resins of the invention, which are being claimed, have applications in nail lacquer compositions and other cosmetics, adhesives, and in wood and paper coatings, as a plasticizer and as a modifier in injection molding applications for various resins.
Inventors
- 👤 Leo X. Mallavarapu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:36
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/44; C08G59/444; A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61Q; A61Q3/00; A61Q3/02; C08L; C08L63/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
46 words
A process for the preparation of a thermoplastic sulfonamide-based epoxy resinous composition, comprising the step of: reacting a sulfonamide compound with a resinous composition, at a temperature of, at least, approximately 140° C. containing a plurality of epoxide groups in the presence of a Lewis acid.
Claim 2
Dependent Claim
46 words
A process for the preparation of a thermoplastic sulfonamide-based epoxy resinous composition, comprising the step of: reacting a sulfonamide compound with a resinous composition, at a temperature of, at least, approximately 140° C. containing a plurality of epoxide groups in the presence of a Lewis acid.
Claim 3
Dependent Claim
15 words
The process according to claim 1, wherein said sulfonamide compound is an aryl sulfonamide compound.
Claim 4
Dependent Claim
38 words
The process according to claim 1, wherein said sulfonamide compound is a member selected from the group consisting of benzene-sulfonamide, toluenesulfonamide, naphthalene sulfonamide, chlorobenzene sulfonamide, nitrobenzenesulfonamide, phenyl methane sulfonamide, benzene disulfonamide, naphthalene disulfonamide, methane sulfonamide and ethane sulfonamide.
Claim 5
Dependent Claim
32 words
The process according to claim 1, wherein said resinous composition containing a plurality of epoxide groups includes diglycidyl ether bis phenol A type with a molecular weight of up to approximately 20,000.
Claim 6
Dependent Claim
31 words
The process according to claim 1, wherein said resinous composition containing a plurality of epoxide groups includes diglycidyl bis phenol F type with a molecular weight of up to approximately 20,000.
Claim 7
Dependent Claim
30 words
The process according to claim 1, wherein said Lewis acid is a member selected from the group consisting of tetramethyl ammonium chloride, tetramethyl ammonium bromide, zinc chloride and aluminum chloride.
References Cited (Backward Citations)
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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) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |