US3946038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N,N'-bis(1,1-dioxohydrothienyl)diaminoalkanes
Assignee: Uniroyal Chemical Co Inc
•
Filing: 1974-11-06
•
Granted: 1976-03-23
•
Expires: 1994-11-06
Abstract
Abstract Certain N,N'-bis(1,1-dioxohydrothienyl)diamino-alkanes, e.g., N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-1,2-diaminopropane, useful as chain extenders for poly-urethanes, especially high resiliency, flexible poly-urethane foams.
Inventors
- 👤 Chung-Ling Mao
- 👤 Lynn A. Bakker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:37
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3855; C08G18/3874; C07; C07D; C07D333/00; C07D333/02; C07D333/46; C07D333/50; C07D333/52; C07D333/62; C07D333/66; C08G18/08; C08G18/10; Y; Y10; Y10S; Y10S521/00; Y10S521/904
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
129 words
An N,N'-bis(1,1-dioxohydrothienyl)diaminoalkane having one of the following formulas I or II: ##SPC9## wherein X and Z are the same or different and are hydrogen, an alkyl group having 1 to 5 carbon atoms or halogen, Y is hydrogen, an alkyl group having 1 to 5 carbon atoms, or an alkoxy group having 1 to 5 carbon atoms; R 1 is hydrogen, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or halogen; R is an alkylene group having 1 to 16 carbon atoms, a cycloalkylene group having 4 to 6 carbon atoms, ##SPC10## where R 2 , R 3 and R 4 are the same or different and are hydrogen or an alkyl group having 1 to 5 carbon atoms.
Claim 2
Dependent Claim
129 words
An N,N'-bis(1,1-dioxohydrothienyl)diaminoalkane having one of the following formulas I or II: ##SPC9## wherein X and Z are the same or different and are hydrogen, an alkyl group having 1 to 5 carbon atoms or halogen, Y is hydrogen, an alkyl group having 1 to 5 carbon atoms, or an alkoxy group having 1 to 5 carbon atoms; R 1 is hydrogen, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms or halogen; R is an alkylene group having 1 to 16 carbon atoms, a cycloalkylene group having 4 to 6 carbon atoms, ##SPC10## where R 2 , R 3 and R 4 are the same or different and are hydrogen or an alkyl group having 1 to 5 carbon atoms.
Claim 3
Dependent Claim
14 words
A compound as in claim 1, which is an N,N'-bis(1,1-dioxohydrothienyl)diaminoalkane having the formula I.
Claim 4
Dependent Claim
26 words
A compound as in claim 2, in which X, Y and Z are hydrogen, and R is an alkylene group having 2 to 12 carbon atoms.
Claim 5
Dependent Claim
56 words
A compound as in claim 2 in which X is hydrogen or halogen, Y and Z are the same or different and are hydrogen or an alkyl group having 1 to 5 carbon atoms and R is an alkylene group having 2 to 12 carbon atoms, a cycloalkylene group having 4 to 6 carbon atoms, ##SPC11##
Claim 6
Dependent Claim
15 words
A compound as in claim 1, which is an N,N'-bis(1,1-dioxohydrothienyl) diaminoalkane having the formula II.
Claim 7
Dependent Claim
38 words
A compound as in claim 5 in which X is hydrogen, R 1 is hydrogen, an alkyl group having 1 to 5 carbon atoms or halogen, and R is an alkylene group having 2 to 12 carbon atoms.
Claim 8
Dependent Claim
33 words
A compound as in claim 5 in which X is hydrogen or halogen, R 1 is hydrogen, a lower alkyl group having 1 to 5 carbon atoms or halogen, and R is ##SPC12##
Claim 9
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-1,2-diaminoethane.
Claim 10
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-1,2-diaminopropane.
Claim 11
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-1,3-diaminopropane.
Claim 12
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-1,4-diaminobutane.
Claim 13
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-1,2-diamino-2-methylpropane.
Claim 14
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-1,6-diamino-2,2,4-trimethylhexane.
Claim 15
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-1,6-diaminohexane.
Claim 16
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-1,10-diaminodecane.
Claim 17
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-alpha,alpha'-diamino-m-xylene.
Claim 18
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-1,3-bis(aminomethyl)cyclohexane.
Claim 19
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis-(1,1-dioxotetrahydro-3-thienyl)-1,2-diaminocyclohexane.
Claim 20
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxo-2-chlorotetrahydro-3-thienyl)-1,2-diaminoethane.
Claim 21
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis(1,1-dioxotetrahydro-3-thienyl)-4,4'methylene-bis(aminocyclohexane
Claim 22
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis[3-(1,1-dioxo-2,3-dihydrobenzo[b]thienyl)]-1,2-diaminoethane.
Claim 23
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis[3-(1,1-dioxo-2,3-dihydrobenzo[b]-thienyl]-1,2-diaminopropane.
Claim 24
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-[3-(1,1-dioxo-2,3-dihydrobenzo[b]thienyl)]-alpha,alpha'-diamino-m-xylene.
Claim 25
Dependent Claim
9 words
A compound as in claim 1 which is N,N'-bis[3-(1,1-dioxo-2,3-dihydrobenzo[b]thienyl)]-1,3-bis(aminomethyl)cyclohexane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |