US4254294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization reactions in the presence of a catalyst containing aluminum oxide, boron oxide and halogen
Assignee: IFP Energies nouvelles
•
Filing: 1979-11-21
•
Granted: 1981-03-03
•
Expires: 1999-11-21
Abstract
Abstract Process for polymerizing olefinic hydrocarbons at a temperature from 0° to 90° C., preferably from 20° to 80° C. in the presence of a catalyst containing aluminum oxide and, per part by weight thereof, boron oxide in a proportion of 0.01 to 1, preferably 0.07 to 0.15 part by weight and halogen in a proportion of 0.5 to 20%, preferably 4 to 12%, said catalyst resulting from the reaction of an aluminum compound of formula AlX y R.sub.(3-y) where X is halogen, R is a hydrocarbon radical and y is selected from 1, 3/2, 2 and 3, with a carrier containing aluminum oxide and boron oxide in a proportion to aluminum oxide from 1 to 100%.
Inventors
- 👤 Bernard Juguin
- 👤 Jean-Pierre Franck
- 👤 Jean-Francois Le Page
- 👤 Gabriel De Gaudemaris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:07
CPC Classifications
C; C08; C08F; C08F240/00; C08F10/00; C08F8/00; C08F8/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
A process for the production of liquid polymers comprising polymerizing at least one olefinic hydrocarbon at a temperature from 0° to 90° C., in the presence of a catalyst containing aluminum oxide, boron oxide and halogen, the catalyst containing by weight 0.5 to 20% of halogen and 0.01 to 1 part by weight of boron oxide per part by weight of aluminum oxide, said catalyst being manufactured by reacting an aluminum compound of formula AlX y R( 3-y ), wherein X is halogen, R is a hydrocarbon radical and y is 1, 3/2 or 2 with a carrier containing aluminum oxide and boron oxide, the ratio by weight of boron oxide to aluminum oxide being from 0.01 to 1.
Claim 2
Dependent Claim
119 words
A process for the production of liquid polymers comprising polymerizing at least one olefinic hydrocarbon at a temperature from 0° to 90° C., in the presence of a catalyst containing aluminum oxide, boron oxide and halogen, the catalyst containing by weight 0.5 to 20% of halogen and 0.01 to 1 part by weight of boron oxide per part by weight of aluminum oxide, said catalyst being manufactured by reacting an aluminum compound of formula AlX y R( 3-y ), wherein X is halogen, R is a hydrocarbon radical and y is 1, 3/2 or 2 with a carrier containing aluminum oxide and boron oxide, the ratio by weight of boron oxide to aluminum oxide being from 0.01 to 1.
Claim 3
Dependent Claim
19 words
A process according to claim 1, wherein the polymerization is conducted at a temperature from 20° to 80° C.
Claim 4
Dependent Claim
18 words
A process according to claim 2, wherein the catalyst contains from 4 to 12% by weight of halogen.
Claim 5
Dependent Claim
20 words
A process according to claim 2, wherein the molar ratio of boron oxide to alumina is from 0.07 to 0.15.
Claim 6
Dependent Claim
22 words
A process according to claim 1, wherein the catalyst manufacture is followed with heating to a temperature from 300° and 800° C.
Claim 7
Dependent Claim
30 words
A process according to claim 1, wherein the mixture of aluminum oxide and boron oxide results from the impregnation of alumina by means of an aqueous solution of boric acid.
Claim 8
Dependent Claim
35 words
A process according to claim 1, wherein the compound of formula AlX y R( 3-y ) is used in a sufficient amount to introduce from 0.5 to 20% by weight of halogen in the catalyst.
Claim 9
Dependent Claim
35 words
A polymerization process according to claim 1, conducted in the presence of an additional halogenated promoter, used in a proportion from 10 to 20,000 ppm by weight with respect to the olefinic hydrocarbon to polymerize.
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) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |