US3939138A
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US
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Radical polymerization initiator andd process for its preparation
Assignee: Zeon Corp
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Filing: 1974-09-04
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Granted: 1976-02-17
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Expires: 1994-09-04
Abstract
Abstract A radical polymerization initiator comprising as an active ingredient a hydroperoxide of disproportionated or hydrogenated rosin acid or its alkali metal or ammonium salt. The initiator is prepared by contacting disproportionated or hydrogenated rosin acid or its alkali metal or ammonium salt with molecular oxygen in water or an organic solvent at a temperature of 0° to 150°C. to form its hydroperoxide.
Inventors
- 👤 Souichi Suzuki
- 👤 Hiroshi Horino
- 👤 Tetsu Ohishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:14
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C407/00; C08; C08F; C08F4/00; C08F4/28; C08F4/32; C08F4/34
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
105 words
A radical emulsion-, suspension-, or aqueous-polymerization initiator consisting essentially of as an active ingredient a hydroperoxide of disproportionated rosin acid, alkali metal salt thereof, ammonium salt thereof, hydrogenated rosin acid, alkali metal salt thereof, or ammonium salt thereof, said active ingredient being prepared by contacting disproportionated rosin acid, alkali metal salt thereof, ammonium salt thereof, hydrogenated rosin acid, alkali metal salt thereof, or ammonium salt thereof with molecular oxygen in water or an organic solvent in the presence of a radical reaction initiator at a temperature of 0° to 150°C. and a pressure of 0 to 100 kg/cm 2 .G to form the hydroperoxide thereof.
Claim 2
Dependent Claim
105 words
A radical emulsion-, suspension-, or aqueous-polymerization initiator consisting essentially of as an active ingredient a hydroperoxide of disproportionated rosin acid, alkali metal salt thereof, ammonium salt thereof, hydrogenated rosin acid, alkali metal salt thereof, or ammonium salt thereof, said active ingredient being prepared by contacting disproportionated rosin acid, alkali metal salt thereof, ammonium salt thereof, hydrogenated rosin acid, alkali metal salt thereof, or ammonium salt thereof with molecular oxygen in water or an organic solvent in the presence of a radical reaction initiator at a temperature of 0° to 150°C. and a pressure of 0 to 100 kg/cm 2 .G to form the hydroperoxide thereof.
Claim 3
Dependent Claim
67 words
The radical polymerization initiator of claim 1 wherein said active ingredient is a hydroperoxide of disproportionated potassium rosinate, said active ingredient being prepared by contacting disproportionated potassium rosinate with molecular oxygen in water or in an organic solvent in the presence of a radical reaction initiator at a temperature of 5° to 150°C. and a pressure of 0 to 100 Kg/cm 2 .G to form its hydroperoxide.
Claim 4
Dependent Claim
95 words
A process for preparing a radical emulsion-, suspension-, or aqueous-polymerization initiator consisting essentially of, as an active ingredient, a hydroperoxide of a member selected from the group consisting of disproportionated rosin acid, alkali metal salt thereof, ammonium salt thereof, hydrogenated rosin acid, alkali metal salt thereof, and ammonium salt thereof, which process comprises contacting said member with molecular oxygen in water or an organic solvent in the presence of a radical reaction initiator at a temperature of 5° to 150°C. and a pressure of 0 to 100 Kg/cm 2 .G to form the hydroperoxide thereof.
Claim 5
Dependent Claim
95 words
A process for preparing a radical emulsion-, suspension-, or aqueous-polymerization initiator consisting essentially of, as an active ingredient, a hydroperoxide of a member selected from the group consisting of disproportionated rosin acid, alkali metal salt thereof, ammonium salt thereof, hydrogenated rosin acid, alkali metal salt thereof, and ammonium salt thereof, which process comprises contacting said member with molecular oxygen in water or an organic solvent in the presence of a radical reaction initiator at a temperature of 5° to 150°C. and a pressure of 0 to 100 Kg/cm 2 .G to form the hydroperoxide thereof.
Claim 6
Dependent Claim
56 words
The process of claim 3 wherein the active ingredient is the hydroperoxide of disproportionated potassium rosinate obtained by contacting disproportionated potassium rosinate with molecular oxygen in water or in an organic solvent in the presence of a radical initiator at a temperature of 5° to 150°C. and a pressure of 0 to 150 Kg/cm 2 .G
Claim 7
Dependent Claim
14 words
The process of claim 3 wherein the reaction temperature is from 20° to 100°C.
Claim 8
Dependent Claim
25 words
The process of claim 5 wherein the reaction temperature is from 40° to 60°C. and the pressure is from 10 to 30 kg/cm 2 .G.
Claim 9
Dependent Claim
16 words
In a radical emulsion-polymerization process, the improvement comprising using the radical emulsion-polymerization initiator of claim 1.
Claim 10
Dependent Claim
16 words
In a radical suspension-polymerization process, the improvement comprising using the radical suspension-polymerization initiator of claim 1.
Claim 11
Dependent Claim
16 words
In a radical aqueous-polymerization process, the improvement comprising using the radical aqueous-polymerization initiator of claim 1.
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) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |