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US4131728A
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Method for polymerizing olefinically unsaturated monomers employing a catalyst composition comprising (a) shock-sensitive organic peroxide and (b) an olefinic unsaturated non-homopolymerizable monomer
Assignee: Dow Chemical Co
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Filing: 1978-04-05
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Granted: 1978-12-26
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Expires: 1998-04-05
Abstract
Abstract Organic peroxide compositions suitable for free radical polymerization, the compositions comprising a mixture of a shock-sensitive peroxide and a diluent, the diluent being a monomeric material containing olefinic unsaturation which does not readily homopolymerize.
Inventors
- 👤 Duane B. Priddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:17
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; C08F4/32; C08F4/34; Y; Y10; Y10S; Y10S526/00; Y10S526/908
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
123 words
In a method for polymerizing one or more olefinically unsaturated monomer, the method comprising admixing an organic peroxide with olefinically unsaturated polymerizable material maintaining the resultant mixture of monomeric material and a free-radical polymerization initiating peroxide at a polymerizing temperature and converting at least a portion of the monomeric material into polymeric material, the improvement which comprises providing the organic peroxide as an intimate admixture consisting essentially of (a) a shock-sensitive organic peroxide and (b) an olefinically unsaturated monomer, the olefinically unsaturated monomer which does not homopolymerize, (a) being present in a proportion of 10 to 90 parts by weight and (b) being present in a proportion of 90 to 10 parts by weight per 100 parts by weight of (a) and (b).
Claim 2
Dependent Claim
123 words
In a method for polymerizing one or more olefinically unsaturated monomer, the method comprising admixing an organic peroxide with olefinically unsaturated polymerizable material maintaining the resultant mixture of monomeric material and a free-radical polymerization initiating peroxide at a polymerizing temperature and converting at least a portion of the monomeric material into polymeric material, the improvement which comprises providing the organic peroxide as an intimate admixture consisting essentially of (a) a shock-sensitive organic peroxide and (b) an olefinically unsaturated monomer, the olefinically unsaturated monomer which does not homopolymerize, (a) being present in a proportion of 10 to 90 parts by weight and (b) being present in a proportion of 90 to 10 parts by weight per 100 parts by weight of (a) and (b).
Claim 3
Dependent Claim
18 words
The method of claim 1 wherein the olefinically unsaturated monomer which exhibits no tendency to homopolymerize is particulate.
Claim 4
Dependent Claim
28 words
The method of claim 2 wherein the olefinically unsaturated monomer which exhibits no tendency to homopolymerize has particles sufficiently small to pass a 100-mesh US sieve size screen.
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) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |