US4057567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization method and t-alkyl peresters of t-hydroperoxides for use therein
Assignee: Argus Chemical Corp
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Filing: 1973-02-20
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Granted: 1977-11-08
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Expires: 1993-02-20
Abstract
Abstract Novel tertiary alkyl peresters of tertiary hydroperoxides are used as polymerization initiators wherein the peresters are characterized by the tertiary alkyl group of the acid moiety having at least two alkyl groups of two or more carbon atoms and the tertiary alkyl group of the hydroperoxide has at least five carbon atoms. Typical is the polymerization of certain vinyl monomers such as vinyl chloride.
Inventors
- 👤 Ronald L. Friedman
- 👤 Roger N. Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:43
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/38; C08; C08F; C08F4/00; C08F4/28; C08F4/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
46 words
An organic peroxide of the formula: ##STR3## wherein R 3 , R 4 and R 5 together with the associated tertiary carbon atom and adjacent carbonyl group form a neodecanoate group; and R is selected from 2,2-dimethyl propyl and straight chain alkyl of 2-5 carbon atoms.
Claim 2
Dependent Claim
46 words
An organic peroxide of the formula: ##STR3## wherein R 3 , R 4 and R 5 together with the associated tertiary carbon atom and adjacent carbonyl group form a neodecanoate group; and R is selected from 2,2-dimethyl propyl and straight chain alkyl of 2-5 carbon atoms.
Claim 3
Dependent Claim
12 words
An organic peroxide in accordance with claim 1 wherein R is ethyl.
Claim 4
Dependent Claim
12 words
An organic peroxide in accordance with claim 1 wherein R is n-propyl.
Claim 5
Dependent Claim
12 words
An organic peroxide in accordance with claim 1 wherein R is n-butyl.
Claim 6
Dependent Claim
12 words
An organic peroxide in accordance with claim 1 wherein R is n-amyl.
References Cited (Backward Citations)
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Cited
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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) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |