US4008244A
Expired / Lapsed
US
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Oxazolidine and thiazolidine carbodithioates
Assignee: Arkema Inc
•
Filing: 1975-08-15
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Granted: 1977-02-15
•
Expires: 1995-08-15
Abstract
Abstract Oxazolidine and thiazolidine carbodithioates of sodium, potassium and specified alkyl substituted ammonium which are useful as vulcanization accelerators for EPDM elastomers while demonstrating non-blooming characteristics.
Inventors
- 👤 Ivan Christoff Popoff
- 👤 Paul Gordon Haines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:30
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/04; C07D277/00; C07D277/02; C07D277/04; C08; C08K; C08K5/00; C08K5/36; C08K5/39
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
155 words
A compound of the structure ##STR28## where X is sulfur or oxygen, R, R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, lower alkyl having from 1 to 8 carbon atoms, CCl 3 , phenyl and substituted phenyl wherein there are not more than two substituents selected from the group consisting of NR 4 R 5 , OH, OR 6 and Cl wherein R 4 and R 5 are independently selected from the group consisting of hydrogen and methyl, R 6 is a lower alkyl having from 1 to 8 carbon atoms, not more than one of R and R 1 is phenyl and not more than one of R 2 and R 3 is phenyl; M is selected from the group consisting of sodium, potassium, tri-(C 1 -C 8 ) alkyl substituted ammonium and phenyl-di-(C 1 -C 8 ) alkyl substituted ammonium; and y is 1.
Claim 2
Dependent Claim
155 words
A compound of the structure ##STR28## where X is sulfur or oxygen, R, R 1 , R 2 and R 3 are independently selected from the group consisting of hydrogen, lower alkyl having from 1 to 8 carbon atoms, CCl 3 , phenyl and substituted phenyl wherein there are not more than two substituents selected from the group consisting of NR 4 R 5 , OH, OR 6 and Cl wherein R 4 and R 5 are independently selected from the group consisting of hydrogen and methyl, R 6 is a lower alkyl having from 1 to 8 carbon atoms, not more than one of R and R 1 is phenyl and not more than one of R 2 and R 3 is phenyl; M is selected from the group consisting of sodium, potassium, tri-(C 1 -C 8 ) alkyl substituted ammonium and phenyl-di-(C 1 -C 8 ) alkyl substituted ammonium; and y is 1.
Claim 3
Dependent Claim
9 words
The compound of claim 1 wherein M is sodium.
Claim 4
Dependent Claim
9 words
The compound of claim 1 wherein M is potassium.
Claim 5
Dependent Claim
16 words
The compound of claim 1 wherein M is phenyl-di-(C 1 -C 8 ) alkly substituted ammonium.
Claim 6
Dependent Claim
16 words
The compound of claim 1 wherein M is tri-(C 1 -C 8 ) alkyl substituted ammonium.
Claim 7
Dependent Claim
15 words
The compound of claim 5 wherein M is (C 2 H 5 ) 3 NH.
Claim 8
Dependent Claim
9 words
The compound of claim 6 wherein X is oxygen.
Claim 9
Dependent Claim
9 words
The compound of claim 6 wherein X is sulfur.
References Cited (Backward Citations)
US2415627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |