US3669945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing a homopolymer or copolymer of ethylene with novel catalyst
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1967-03-06
•
Granted: 1972-06-13
•
Expires: 1987-03-06
Abstract
Abstract A process for the homopolymerization and copolymerization of ethylene using a catalyst composed of (1) a substance obtained by treating with an alcohol a reaction product of a vanadium compound and a phosphoric acid or its derivative, or a mixture thereof and (2) an organo-aluminum compound having the composition formula,
Inventors
- 👤 Kohei Nakaguchi
- 👤 Tomozumi Nishikida
- 👤 Shohachi Kawasumi
- 👤 Kenichi Maemoto
- 👤 Takezo Sano
- 👤 Yoshikazu Fujii
- 👤 Koichi Harada
- 👤 Keijyu Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:13
CPC Classifications
C; C08; C08F; C08F10/00; C08F10/02
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
12 words
The process of claim 1, wherein said phosphoric acid is orthophosphoric acid.
Claim 2
Dependent Claim
65 words
a second component having the formula RnAlX3 n wherein R is a hydrocarbon group having 1-8 carbon atoms; X is halogen, alkoxy, or hydrogen; and n is a positive number not greater than 3, which may be used alone or in admixture with an aluminum halide the relative weight proportions of said first component to said second component being 0.001 to 10: 0.01 to 100.
Claim 3
Dependent Claim
48 words
A process according to claim 1, wherein the said treatment with an alcohol is carried out by contacting the said intermediary material with an alcohol in the presence or absence of a medium at a temperature ranging from 0* to 250* C. for 10 minutes to 100 hours.
Claim 4
Dependent Claim
24 words
A process according to claim 1, wherein the said treatment with an alcohol is carried out while removing the by-products having lower boiling point.
Claim 5
Dependent Claim
25 words
A process according to claim 1, wherein the said unsaturated hydrocarbon is at least one member selected from the group consisting of olefins and diolefins.
Claim 6
Dependent Claim
26 words
A process according to claim 1, wherein the said alcohol is a member selected from the group consisting of aliphatic, alicyclic and aromatic alcohols, and phenols.
Claim 7
Dependent Claim
37 words
A process according to claim 1, wherein the said first component is synthesized by reacting in a single step a vanadium compound, an unsubstituted phosphoric acid and an alcohol, without the isolation of the said intermediary material.
Claim 8
Dependent Claim
118 words
A process according to claim 1, wherein said first component is obtained by i. removing volatiles from the treated mixture and drying the residue, or ii. subjecting the treated mixture to filtration or centrifuge to divide the same into a solid portion and a solution portion and drying the solid portion, and removing volatiles from the solution portion and drying the residue, or iii. adding water to the solution portion obtained in (ii) to form precipitate and then drying the precipitate, or iv. adding non-solvent to the solution portion obtained in (ii) to form precipitate and then drying the precipitate, or v. incorporating a carrier into the solution portion obtained in (ii) and then drying the incorporated carrier.
Claim 9
Dependent Claim
8 words
A two component catalyst for ethylene polymerization comprising
Claim 10
Dependent Claim
12 words
The catalyst of claim 9, wherein said phosphoric acid is orthophosphoric acid.
Claim 11
Dependent Claim
53 words
A catalyst for ethylene polymerization and copolymerization according to claim 9, wherein the said treatment with an alcohol is carried out by contacting the said intermediary material with an alcohol in the presence or absence of a medium at a temperatUre ranging from 0* to 250* C. for 10 minutes to 100 hours.
Claim 12
Dependent Claim
156 words
An improved ethylene polymerization catalyst of increased activity having a first component containing vanadium and phosphorous and a second component containing an organo aluminum compound of the formula RnAlX3 n wherein R is a hydrocarbon group having 1-8 carbon atoms; X is halogen, alkoxy or hydrogen; and n is a positive number not greater than 3, which may be used alone or in admixture with an aluminum halide, characterized in that the said first component is obtained by treating an intermediary material formed by the reaction of a vanadium compound with an unsubstituted phosphoric acid with an alcohol, the amount of said alcohol being 0.1 to 1,000 parts by weight per part by weight of said intermediary material, the vanadium to phosphorous atomic ratio of said first component falling within the limits of 2:1 to 1:2 and said first component containing the vanadium-oxygen-phosphorous linkage, and said first component being substantially freed of water and uncombined alcohol.
Claim 13
Dependent Claim
15 words
The improved ethylene polymerization catalyst of claim 12 wherein said phosphoric acid is orthophosphoric acid.
Claim 14
Dependent Claim
48 words
An improvement according to claim 12 wherein the said treatment with an alcohol is carried out by contacting the said intermediary material with an alcohol in the presence or absence of a medium at a temperature ranging from 0* to 250* C. for 10 minutes to 100 hours.
Claim 15
Dependent Claim
49 words
A process according to claim 8 wherein said first component is obtained by subjecting the treated mixture to filtration or centrifuge to divide the same into a solid portion and a solution portion and drying the solid portion, and removing volatiles from the solution portion and drying the residue.
Claim 16
Dependent Claim
28 words
A process according to claim 15 wherein said first component is obtained by adding water to said solution portion to form a precipitate and then drying the precipitate.
Claim 17
Dependent Claim
28 words
A process according to claim 15 wherein said first component is obtained by adding non-solvent to said solution portion to form a precipitate and then drying the precipitate.
Claim 18
Dependent Claim
26 words
A process according to claim 15 wherein said first component is obtained by incorporating a carrier into said solution portion and then drying the incorporated carrier.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |