US4143009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane-epoxy casting resin
Assignee: Individual
•
Filing: 1977-03-02
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Granted: 1979-03-06
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Expires: 1997-03-02
Abstract
Abstract A two-part liquid resin system consisting of a first part comprising an epoxy compound and a hydroxyalkyl tertiary amine, and a second part comprising a liquid isocyanate resin, when mixed, form liquid compositions which cure rapidly at or near room temperature to provide polyurethane-epoxy resins useful in the production of castings, laminates and coatings.
Inventors
- 👤 Frank Dewey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:33
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/64; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C08G18/3278; C08G59/50; C08G59/56; C08L; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
90 words
An epoxy-urethane resin comprising the reaction product of: a mixture of from 5 to 300 parts by weight of an epoxy compound selected from the group consisting of aliphatic diepoxides, cycloaliphatic diepoxides, polyalkylene ether glycol bisepoxides, and epoxidized vegetable oils, said epoxy compounds having no reactive hydroxyl groups attached thereto, and 100 parts by weight of a hydroxyalkyl tertiary amine having at least two hydroxyalkyl groups; with from 0.5 to about 2 equivalents per 1 equivalent of hydroxyalkyl tertiary amine of an isocyanate compound having at least two isocyanate groups.
Claim 2
Dependent Claim
90 words
An epoxy-urethane resin comprising the reaction product of: a mixture of from 5 to 300 parts by weight of an epoxy compound selected from the group consisting of aliphatic diepoxides, cycloaliphatic diepoxides, polyalkylene ether glycol bisepoxides, and epoxidized vegetable oils, said epoxy compounds having no reactive hydroxyl groups attached thereto, and 100 parts by weight of a hydroxyalkyl tertiary amine having at least two hydroxyalkyl groups; with from 0.5 to about 2 equivalents per 1 equivalent of hydroxyalkyl tertiary amine of an isocyanate compound having at least two isocyanate groups.
Claim 3
Dependent Claim
30 words
The epoxy urethane resin of claim 1 wherein said hydroxyalkyl tertiary amine is selected from the group consisting of N,N,N',N"-tetrahydroxyethylene diamine, N,N,N',N'-tetrahydroxypropylethylene diamine, triethanolamine, N-methyldiethanolamine, N,N,N',N",N"-pentaethanol-diethylenetriamine, N,N-diethanolaniline, and mixtures thereof.
Claim 4
Dependent Claim
24 words
The epoxy-urethane resin of claim 1 wherein the isocyanate compound is selected from the group consisting of aromatic diisocyanates, aliphatic diisocyanates and mixtures thereof.
Claim 5
Dependent Claim
11 words
The epoxy-urethane resin of claim 1 further comprising an inert filler.
Claim 6
Dependent Claim
11 words
The epoxy-urethane resin of claim 1 further comprising a non-reactive plasticizer.
Claim 7
Dependent Claim
137 words
A process for preparing epoxy-urethane resin compositions comprising: a. Providing a first part comprising a mixture of from 5 to 300 parts by weight of an epoxy compound selected from the group consisting of aliphatic diepoxides, cycloaliphatic diepoxides, polyalkylene ether glycol bisepoxides, and epoxidized vegetable oils said epoxy compound having no reactive hydroxyl groups attached thereto, and 100 parts by weight of a hydroxyalkyl tertiary amine selected from the group consisting of N,N,N',N'-tetrahydroxyethylene diamine, N,N,N',N'-tetrahydroxypropylethylene diamine, triethanolamine, N-methyldiethanolamine, N,N,N',N",N"-pentaethanol-diethylenetriamine, N,N-diethanolaniline, and mixtures thereof; b. providing a second part comprising from 0.5 to 2 equivalents per equivalent of hydroxyalkyl tertiary amine of an isocyanate compound selected from the group consisting of aromatic diisocyanates, aliphatic diisocyanates and mixtures thereof; c. mixing said first and second parts to provide a curable composition; and d. allowing said curable composition to cure.
Claim 8
Dependent Claim
137 words
A process for preparing epoxy-urethane resin compositions comprising: a. Providing a first part comprising a mixture of from 5 to 300 parts by weight of an epoxy compound selected from the group consisting of aliphatic diepoxides, cycloaliphatic diepoxides, polyalkylene ether glycol bisepoxides, and epoxidized vegetable oils said epoxy compound having no reactive hydroxyl groups attached thereto, and 100 parts by weight of a hydroxyalkyl tertiary amine selected from the group consisting of N,N,N',N'-tetrahydroxyethylene diamine, N,N,N',N'-tetrahydroxypropylethylene diamine, triethanolamine, N-methyldiethanolamine, N,N,N',N",N"-pentaethanol-diethylenetriamine, N,N-diethanolaniline, and mixtures thereof; b. providing a second part comprising from 0.5 to 2 equivalents per equivalent of hydroxyalkyl tertiary amine of an isocyanate compound selected from the group consisting of aromatic diisocyanates, aliphatic diisocyanates and mixtures thereof; c. mixing said first and second parts to provide a curable composition; and d. allowing said curable composition to cure.
Claim 9
Dependent Claim
14 words
The process of claim 6 wherein said first part further comprises an inert filler.
Claim 10
Dependent Claim
14 words
The process of claim 6 wherein said second part further comprises an inert filler.
Claim 11
Dependent Claim
14 words
The process of claim 6 wherein said first part further comprises a non-reactive plasticizer.
Claim 12
Dependent Claim
14 words
The process of claim 6 wherein said second part further comprises a non-reactive plasticizer.
Claim 13
Dependent Claim
19 words
The process of claim 6 wherein said second part further comprises an acidic cure accelerator for said epoxy compound.
Claim 14
Dependent Claim
70 words
A diisocyanate-curable composition comprising from 5 to 300 parts by weight of an epoxy compound selected from the group consisting of aliphatic diepoxides, cycloaliphatic diepoxides, polyalkylene ether glycol diepoxides and epoxidized vegetable oils said epoxy compound having no reactive hydroxyl groups attached thereto and 100 parts by weight of a hydroxyalkyl tertiary amine selected from the group consisting of N,N,N',N'-tetrahydroxyethylene diamine, N,N,N',N'-tetrahydroxypropylethylene diamine, triethanolamine, N-methyldiethanolamine, N,N,N',N",N"-pentaethanol-diethylenetriamine, N,N-diethanolaniline, and mixtures thereof.
Claim 15
Dependent Claim
70 words
A diisocyanate-curable composition comprising from 5 to 300 parts by weight of an epoxy compound selected from the group consisting of aliphatic diepoxides, cycloaliphatic diepoxides, polyalkylene ether glycol diepoxides and epoxidized vegetable oils said epoxy compound having no reactive hydroxyl groups attached thereto and 100 parts by weight of a hydroxyalkyl tertiary amine selected from the group consisting of N,N,N',N'-tetrahydroxyethylene diamine, N,N,N',N'-tetrahydroxypropylethylene diamine, triethanolamine, N-methyldiethanolamine, N,N,N',N",N"-pentaethanol-diethylenetriamine, N,N-diethanolaniline, and mixtures thereof.
Claim 16
Dependent Claim
10 words
The composition of claim 12 further comprising an inert filler.
Claim 17
Dependent Claim
10 words
The composition of claim 12 further comprising a non-reactive plasticizer.
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) | 1982-03-05 | 1982-09-04 | 1983-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-05 | 1986-09-04 | 1987-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-05 | 1990-09-04 | 1991-03-06 | $7700.00 | Window Closed / Lapsed |