US3385841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: EIDP Inc
•
Filing: 1955-04-04
•
Granted: 1968-05-28
•
Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 Bruton James Donald
- 👤 Payne Donald Hughel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:28
CPC Classifications
C; C08; C08F; C08F4/00; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
THE PROCESS OF PREPARING SOLID, AMORPHOUS POLYMERS BY POLYMERIZING A TERMINALLY UNSATURATED, SUBSTITUTED VINYL OLEFIN WHICH COMPRISES CONTACTING IN INERT LIQUID HYDROCARBON MEDIUM SAID OLEFIN WITH A CATALYST PRODUCED BY ADMIXING IN SAID INERT MEDIUM (1) TITANIUM TETRACHLORIDE WITH (2) A SATURATED HALOHYDROCARBON HAVING AT LEAST ONE CARBON ATOM SUBSTITUTED BY AT LEAST THREE HALOGEN ATOMS, WHEREIN THE HALOGEN IS A MEMBER OF THE CLASS CONSISTING OF CHLORINE, BROMINE, AND IODINE, AND ADDING THERETO (3) A REDUCING AGENT HAVING AT LEAST ONE METAL TO HYDROCARBON BOND, SAID REDUCING AGENT BEING ADDED IN SUFFICIENT QUANTITY TO REDUCE THE TITANIUM OF SAID TITANIUM TETRACHLORIDE TO A VALENCE STATE BELOW THREE, SAID HALOHYDROCARBON BEING ADMIXED IN AT LEAST EQUIMOLAR QUANTITIES ON THE BASIS OF THE TITANIUM TETRACHLORIDE, SAID CATALYST BEING EMPLOYED IN A CONCENTRATION OF 0.1 TO 10% BASED ON THE WEIGHT OF TITANIUM PER UNIT WEIGHT OF SUBSTITUTED VINYL OLEFIN.
Claim 2
Dependent Claim
148 words
THE PROCESS OF PREPARING SOLID, AMORPHOUS POLYMERS BY POLYMERIZING A TERMINALLY UNSATURATED, SUBSTITUTED VINYL OLEFIN WHICH COMPRISES CONTACTING IN INERT LIQUID HYDROCARBON MEDIUM SAID OLEFIN WITH A CATALYST PRODUCED BY ADMIXING IN SAID INERT MEDIUM (1) TITANIUM TETRACHLORIDE WITH (2) A SATURATED HALOHYDROCARBON HAVING AT LEAST ONE CARBON ATOM SUBSTITUTED BY AT LEAST THREE HALOGEN ATOMS, WHEREIN THE HALOGEN IS A MEMBER OF THE CLASS CONSISTING OF CHLORINE, BROMINE, AND IODINE, AND ADDING THERETO (3) A REDUCING AGENT HAVING AT LEAST ONE METAL TO HYDROCARBON BOND, SAID REDUCING AGENT BEING ADDED IN SUFFICIENT QUANTITY TO REDUCE THE TITANIUM OF SAID TITANIUM TETRACHLORIDE TO A VALENCE STATE BELOW THREE, SAID HALOHYDROCARBON BEING ADMIXED IN AT LEAST EQUIMOLAR QUANTITIES ON THE BASIS OF THE TITANIUM TETRACHLORIDE, SAID CATALYST BEING EMPLOYED IN A CONCENTRATION OF 0.1 TO 10% BASED ON THE WEIGHT OF TITANIUM PER UNIT WEIGHT OF SUBSTITUTED VINYL OLEFIN.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |