US3668096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling polymerization reactions
Assignee: Monsanto Co
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Filing: 1968-11-13
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Granted: 1972-06-06
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Expires: 1988-11-13
Abstract
Abstract A technique is disclosed for initiating and accelerating the reaction of polymerizable media, particularly thermosetting materials, through application of a suitably imposed electric field under conditions which lead to electrokinetic activity in filled systems. The process greatly facilitates the preparation of composites by permitting long gel time and rapid cure.
Inventors
- 👤 William H Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:00
CPC Classifications
B; B29; B29B; B29B13/00; B01; B01J; B01J19/00; B01J19/08; B01J19/087; C; C08; C08J; C08J3/00; C08J3/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
A process according to claim 1, wherein a fiber is mixed with said liquid or melt and wherein substantially all of the fibers have their major axes aligned by said electric field prior to the polymerization of said liquid or melt.
Claim 2
Dependent Claim
45 words
A process according to claim 1, wherein the application of said electric field to said liquid or melt causes an increase in the rate of polymerization of said liquid or melt by comparison to the rate of polymerization observable when no electric field is applied.
Claim 3
Dependent Claim
17 words
A process according to claim 1, wherein a polymerizable, relatively inviscid, non-conductive thermosetting resinous liquid is employed.
Claim 4
Dependent Claim
24 words
A process according to claim 4, wherein the polymerizing of said thermosetting resinous liquid is characterized by a long gel time and rapid cure.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |