US4159976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable systems containing epoxy resin and methanol or ethanol solvent to suppress the catalytic reaction between epoxy resin and an imidazole catalytic curing agent
Assignee: Henkel Loctite Corp
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Filing: 1977-03-10
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Granted: 1979-07-03
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Expires: 1997-03-10
Abstract
Abstract A curable system such as a curable adhesive type system having a relatively long pot life is disclosed. The curable system of the present invention comprises polymer containing material including at least one curable epoxy resin, at least one imidazole type catalytic curing agent for the resin and a solvent for the epoxy resin capable of suppressing or inhibiting the catalytic reaction between the resin and curing agent at least at about room temperature, the solvent being selected from methanol, ethanol and mixtures thereof.
Inventors
- 👤 James P. Moran, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:34
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/095; C08G; C08G59/00; C08G59/18; C08L; C08L63/00; C08J2363/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
A curable adhesive having a relatively long pot life comprising polymer material including at least one curable epoxy resin, at least one imidazole catalytic curing agent for the resin, and solvent for the resin capable of suppressing catalytic reaction between the resin and the curing agent at least at about room temperature, said solvent being selected from the group consisting of methanol, ethanol and mixtures thereof.
Claim 2
Dependent Claim
66 words
A curable adhesive having a relatively long pot life comprising polymer material including at least one curable epoxy resin, at least one imidazole catalytic curing agent for the resin, and solvent for the resin capable of suppressing catalytic reaction between the resin and the curing agent at least at about room temperature, said solvent being selected from the group consisting of methanol, ethanol and mixtures thereof.
Claim 3
Dependent Claim
13 words
A curable adhesive according to claim 1 wherein the polymer material includes polyamide.
Claim 4
Dependent Claim
14 words
A curable adhesive according to claim 1 wherein the catalytic curing agent is 2-methylimidazole.
Claim 5
Dependent Claim
31 words
A curable adhesive according to claim 1 wherein the polymer material further includes a material selected from the group consisting of polyamide copolymers, reactive terminated acrylonitrile butadiene copolymers and mixtures thereof.
Claim 6
Dependent Claim
19 words
A curable adhesive according to claim 1 wherein the solvent is methanol and the system further includes methylene chloride.
Claim 7
Dependent Claim
20 words
A curable system according to claim 1 wherein the polymer material includes a diglycidal ether of bisphenol A epoxy resin.
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) | 1982-07-02 | 1983-01-01 | 1983-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-02 | 1987-01-01 | 1987-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-02 | 1991-01-01 | 1991-07-03 | $7700.00 | Window Closed / Lapsed |