Patent US3878199A successfully refreshed from Google Patents.
US3878199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxyalkyl derivatives of 1,3,5-triazacycloheptane-2,4-diones
Assignee: Dow Chemical Co
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Filing: 1973-07-23
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Granted: 1975-04-15
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Expires: 1993-07-23
Abstract
Abstract 1,3,5-triazacycloheptane-2,4-dione compounds having the formula WHEREIN R1 is independently hydrogen or an alkyl group of 1-10 carbons, R2 and R5 are independently hydrogen or a methyl group, R3 and R6 are independently hydrogen or a hydroxymethyl group and R4 and R7 are independently hydrogen or an alkyl group of 1-7 carbons. These compounds have been found to be useful as crosslinking agents for polyurethane foams.
Inventors
- 👤 Jr Alvin F Beale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:38
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3842; C08G18/3851
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
53 words
A 1,3,5-TRIAZACYCLOHEPTANE-2,4-DIONE COMPOUND HAVING THE FORMULA 1-(HO-CH(-R4)-C(-R2)(-R3)-),2,4-DI(O=),5-(HO-CH(-R7)C(-R5)(-R6)-),7-R1-1,3,5-TRIAZACYCLOHEPTANE WHEREIN R1 IS INDEPENDENTLY HYDROGEN OR AN ALKYL GROUP OF 1-10 CARBONS, R2 AND R5 ARE INDEPENDENTLY HYDROGEN OR A METHYL GROUP, R3 AND R6 ARE INDEPENDENTLY HDYDROGEN OR A HYDROXYMETHYL GROUP AND R4 AND R7 ARE INDEPENDENTLY HYDROGEN, OR AN ALKYL GROUP OF 1-7 CARBONS.
Claim 2
Dependent Claim
53 words
A 1,3,5-TRIAZACYCLOHEPTANE-2,4-DIONE COMPOUND HAVING THE FORMULA 1-(HO-CH(-R4)-C(-R2)(-R3)-),2,4-DI(O=),5-(HO-CH(-R7)C(-R5)(-R6)-),7-R1-1,3,5-TRIAZACYCLOHEPTANE WHEREIN R1 IS INDEPENDENTLY HYDROGEN OR AN ALKYL GROUP OF 1-10 CARBONS, R2 AND R5 ARE INDEPENDENTLY HYDROGEN OR A METHYL GROUP, R3 AND R6 ARE INDEPENDENTLY HDYDROGEN OR A HYDROXYMETHYL GROUP AND R4 AND R7 ARE INDEPENDENTLY HYDROGEN, OR AN ALKYL GROUP OF 1-7 CARBONS.
Claim 3
Dependent Claim
1 words
1,5-Di(2-hydroxyethyl)-1,3,5-triazacycloheptane-2,4-dione.
Claim 4
Dependent Claim
1 words
1,5-Di(2-hydroxyethyl)-1,3,5-triazacycloheptane-2,4-dione.
Claim 5
Dependent Claim
1 words
1,5-Di(2-hydroxypropyl)-1,3,5-triazacycloheptane-2,4-dione.
Claim 6
Dependent Claim
1 words
1,5-Di(2-hydroxypropyl)-1,3,5-triazacycloheptane-2,4-dione.
Claim 7
Dependent Claim
1 words
1-(2-Hydroxyethyl)-5-(2-hydroxypropyl)-1,3,5-triazacycloheptane-2,4-dione.
Claim 8
Dependent Claim
1 words
1-(2-Hydroxyethyl)-5-(2-hydroxypropyl)-1,3,5-triazacycloheptane-2,4-dione.
Claim 9
Independent Claim
10 words
A method for the preparation of compounds having the formula
Claim 10
Independent Claim
10 words
A method for the preparation of compounds having the formula
Claim 11
Dependent Claim
14 words
The method of claim 5 wherein the inert organic solvent is dimethylformamide or dimethylsulfoxide.
Claim 12
Dependent Claim
13 words
The method of claim 5 wherein the substituted ethylene diamines have the formula
Claim 13
Dependent Claim
14 words
The method of claim 7 wherein the substituted ethylene diamine used is N,N''-di(2-hydroxyethyl)ethylene diamine.
Claim 14
Dependent Claim
14 words
The method of claim 7 wherein the substituted ethylene diamine used is N,N''-di(2-hydroxypropyl)ethylene diamine.
Claim 15
Dependent Claim
15 words
The method of claim 7 wherein the substituted ethylene diamine used is N-2-hydroxyethyl-N''-2-hydroxypropyl ethylene diamine.
References Cited (Backward Citations)
DE2036172A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |