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US4663407A
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Fluorine-containing diacylperoxides and use thereof
Assignee: Daikin Industries Ltd
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Filing: 1986-09-19
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Granted: 1987-05-05
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Expires: 2006-09-19
Abstract
Abstract A novel fluorine-containing diacylperoxide of the formula: [RO-CH.sub.2 CF.sub.2 CF.sub.2 O-.sub.n CH.sub.2 CF.sub.2 COO-.sub.2 (I) wherein R is a C 1 -C 10 hydrocarbon group or halogen-containing hydrocarbon group, and n is an integer of 0 to 3, which can initiate polymerization of an ethylenically unsaturated monomer at a relatively low temperature.
Inventors
- 👤 Masahiko Oka
- 👤 Shigeru Morita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:22
CPC Classifications
C; C07; C07C; C07C407/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
58 words
A method for the polymerization of an ethylenically unsaturated monomer which comprises polymerizing said monomer in the presence of a fluorine-containing diacylperoxide polymerization initiator of the formula: [RO(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.n CH.sub.2 CF.sub.2 COO].sub.2 (I) wherein R is a C 1 -C 10 hydrocarbon group or halogen-containing hydrocarbon group, and n is an integer of 0 to 3.
Claim 2
Independent Claim
58 words
A method for the polymerization of an ethylenically unsaturated monomer which comprises polymerizing said monomer in the presence of a fluorine-containing diacylperoxide polymerization initiator of the formula: [RO(CH.sub.2 CF.sub.2 CF.sub.2 O).sub.n CH.sub.2 CF.sub.2 COO].sub.2 (I) wherein R is a C 1 -C 10 hydrocarbon group or halogen-containing hydrocarbon group, and n is an integer of 0 to 3.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein the ethylenically unsaturated monomer is a hydrocarbon monomer.
Claim 4
Dependent Claim
13 words
The method of claim 1 wherein the ethylenically unsaturated monomer is a fluorohydrocarbon.
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) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |