US3227702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization catalysts
Assignee: Imperial Chemical Industries Ltd
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Filing: 1960-10-31
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Granted: 1966-01-04
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Expires: 1980-10-31
Abstract
No abstract record available.
Inventors
- 👤 Small Percy Arthur
- 👤 Reed Hugh Wilma Boulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:05
CPC Classifications
C; C08; C08F; C08F10/00; C08F36/00; C08F36/02; C08F36/04; C08F110/00; C08F110/02; C08F110/04; C08F110/06; C08F210/00; C08F210/02; C08F210/14; Y; Y10; Y10S; Y10S526/00; Y10S526/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A PROCESS FOR THE POLYMERIZATION OF A COMPOUND CONTAINING A VINYL GROUP IN WHICH A COMPOUND CONTAINING A VINYL GROUP HAVING UP TO EIGHT CARBON ATOMS AND SELECTED FROM THE CLASS CONSISTING OF HYDROCARBONS AND CHLORINE-SUBSTITUTED HYDROCARBONS CONTAINING ONLY ONE CHLORINE ATOM IS BROUGHT INTO CONTACT WITH A POLYMERIZATION CATALYST WHICH IS THE PRODUCT OF REACTION OF AT LEAST ONE SILICON COMPOUND CONTAINING AT LEAST ONE GROUP H-SI<-- WHERE THE RESIDUAL VALENCES SHOWN ARE SATISFIED BY GROUPS SELECTED FROM THE CLASS CONSISTING OF -R, -SI<--, -OR AND -O-SI<-- GROUPS AND COMBINATIONS THEREOF, WHERE R IS A HYDROCARBON GROUP AND WHERE THE RESIDUAL VALENCIES ON THE SAID GROUS AND COMBINATIONS OF GROUPS ARE SATISFIED BY GROUPS SELECTED FROM THE CLASS CONSISTING OF -R AND -OR GROUPS, AND AT LEAST ONE COMPOUND OF A TRANSITION METAL OCCUPYING ANY OF THE 4TH TO 10TH PLACES AFTER THE INERT GASES IN ONE OF THE LONG PERIODS OF THE PERIODIC SYSTEM OF ELEMENTS, IT BEING UNDERSTOOD THAT THE RARE EARTH METALS OCCUPY ONE PLACE THEREIN, SAID TRANSITION METAL COMPOUND BEING A HALIDE.
Claim 2
Dependent Claim
177 words
A PROCESS FOR THE POLYMERIZATION OF A COMPOUND CONTAINING A VINYL GROUP IN WHICH A COMPOUND CONTAINING A VINYL GROUP HAVING UP TO EIGHT CARBON ATOMS AND SELECTED FROM THE CLASS CONSISTING OF HYDROCARBONS AND CHLORINE-SUBSTITUTED HYDROCARBONS CONTAINING ONLY ONE CHLORINE ATOM IS BROUGHT INTO CONTACT WITH A POLYMERIZATION CATALYST WHICH IS THE PRODUCT OF REACTION OF AT LEAST ONE SILICON COMPOUND CONTAINING AT LEAST ONE GROUP H-SI<-- WHERE THE RESIDUAL VALENCES SHOWN ARE SATISFIED BY GROUPS SELECTED FROM THE CLASS CONSISTING OF -R, -SI<--, -OR AND -O-SI<-- GROUPS AND COMBINATIONS THEREOF, WHERE R IS A HYDROCARBON GROUP AND WHERE THE RESIDUAL VALENCIES ON THE SAID GROUS AND COMBINATIONS OF GROUPS ARE SATISFIED BY GROUPS SELECTED FROM THE CLASS CONSISTING OF -R AND -OR GROUPS, AND AT LEAST ONE COMPOUND OF A TRANSITION METAL OCCUPYING ANY OF THE 4TH TO 10TH PLACES AFTER THE INERT GASES IN ONE OF THE LONG PERIODS OF THE PERIODIC SYSTEM OF ELEMENTS, IT BEING UNDERSTOOD THAT THE RARE EARTH METALS OCCUPY ONE PLACE THEREIN, SAID TRANSITION METAL COMPOUND BEING A HALIDE.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |