Patent US3682948A successfully refreshed from Google Patents.
US3682948A
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US
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Sulfur-containing 2-oxazoline and oxazine monomers and their polymers
Assignee: YANCEY J DICKERT
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Filing: 1969-06-16
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Granted: 1972-08-08
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Expires: 1989-06-16
Abstract
Abstract Wherein R is alkylene (C2-C20), arylene (C6-C10), alkyl-arylene (C7-C15), alkyl- (C1-C10) or aryl- (C6-C10) thiopolyether; or R and with it X, can be void; R'', R'''', Q'' and Q'''' are, independently in any occurrence, hydrogen or alkyl (C1-4) or R'' can be phenyl; Q in any occurrence is independently hydrogen, methylol, or WHEREIN G is alkyl (C1-20) or phenyl; and n is zero or 1, and y designates the molar abundance of monomer for a desired degree of polymerization; and y designates also that degree of polymerization: the substances polymerize without catalysis to obtain polyamides with useful resinous properties.
Inventors
- 👤 Donald A Tomalia
- 👤 Yancey J Dickert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:14
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/10; C07D265/00; C07D265/04; C07D265/06; C07D265/08; C08; C08G; C08G69/00; C08G69/42; C08G73/00; C08G73/02; C08G73/0233
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
1 words
2-((2-(2-oxazolin-2-yl)ethyl)thio)ethanethiol.
Claim 2
Dependent Claim
1 words
2-((2-(4,4-dimethyl-2-oxazolin-2-yl)ethyl)thio)ethanethiol.
Claim 3
Dependent Claim
1 words
2-((2-(2-oxazolin-2-yl)propyl)thio)ethanethiol.
Claim 4
Dependent Claim
1 words
2((2-(2-oxazolin-2-yl)ethyl)thiopropanethiol.
Claim 5
Dependent Claim
1 words
2-((2-(2-oxazolin-2-yl)propyl)thio)propanethiol.
Claim 6
Dependent Claim
1 words
2-(2-oxazolin-2-yl)ethanethiol.
Claim 7
Dependent Claim
1 words
2-(2-oxazolin-2-yl)propanethiol.
References Cited (Backward Citations)
US3542699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |