Patent US3051328A successfully refreshed from Google Patents.
Patent US3719650A successfully refreshed from Google Patents.
US3719650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrolyzable functional sylyl alkyl alkyl peroxides
Assignee: Union Carbide Corp
•
Filing: 1971-12-08
•
Granted: 1973-03-06
•
Expires: 1991-12-08
Abstract
Abstract Described herein are hydrolyzable functional silyl alkyl alkyl peroxides having the following general formula;
Inventors
- 👤 J Joy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:13
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/14; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08F; C08F4/00; C08F4/28; C08F4/32
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
87 words
In the method for olefin polymerization of at least a monomer having polymerizable olefinic unsaturation, the improvement wherein a hydrolyzable function silyl alkyl alkyl peroxide having the following general formula; X3 n(Rn)SiR''OOR'''' wherein, X is a hydrolyzable group, R is hydrogen or a monovalent hydrocarbon radical which is bonded to the silicon atom through a carbon to silicon bond, R'' is an alkenylene, cycloalkenylene, alkaryl alkylene, or aralkylene, R'''' is an alkyl or aralkyl, and n is 0 to 2 inclusive, is used as a polymerization initiator.
Claim 2
Dependent Claim
87 words
In the method for olefin polymerization of at least a monomer having polymerizable olefinic unsaturation, the improvement wherein a hydrolyzable function silyl alkyl alkyl peroxide having the following general formula; X3 n(Rn)SiR''OOR'''' wherein, X is a hydrolyzable group, R is hydrogen or a monovalent hydrocarbon radical which is bonded to the silicon atom through a carbon to silicon bond, R'' is an alkenylene, cycloalkenylene, alkaryl alkylene, or aralkylene, R'''' is an alkyl or aralkyl, and n is 0 to 2 inclusive, is used as a polymerization initiator.
Claim 3
Dependent Claim
7 words
Claim 1, wherein said monomer is styrene.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |