US3843618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing butadiene polymer
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1971-12-27
•
Granted: 1974-10-22
•
Expires: 1991-12-27
Abstract
Abstract A process for producing butadiene polymer which comprises polymerizing 1,3-butadiene by using 1. A CATALYST SYSTEM COMPRISING: A. at least one of nickel and cobalt compounds, B. a trialkylaluminum compound, C. a benzotrifluoride compound, and D. a hydroquinone compound in the presence of E. water together with at least one of alcohols, carboxylic acids and phenols; or 2. A CATALYST SYSTEM COMPRISING: A. at least one of nickel and cobalt compounds, F. a dialkylaluminum monofluoride compound, and D. a hydroquinone compound in the presence or absence of G. water together with or without at least one of alcohols, carboxylic acids and phenols, TO GIVE A BUTADIENE POLYMER CONTAINING PREDOMINANTLY CIS-1,4STRUCTURE AND HAVING A REGULATED MOLECULAR WEIGHT.
Inventors
- 👤 Y Yagi
- 👤 S Yasui
- 👤 A Kobayashi
- 👤 H Sato
- 👤 S Narisawa
- 👤 M Hino
- 👤 K Hata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:37
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
59 words
A PROCESS FOR PRODUCING BUTADIENE POLYMER WHICH COMPRISES POLYMERIZING 1, 3-BUTADIENE IN THE PRESENCE OF A CATALYST SYSTEM COMPRISING: A. AT LEAST ONE NICKEL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE HALIDES, SULFATES, ORGANIC ACIDS SALTS, COMPLEX COMPOUNDS, OTGANIC COORDINATION COMPOUNDS AND CHELATE COMPOUNDS THEREOF, F. A DIALKYLALUMINUM MONOFLOURIDE COMPOUND, AND D. A HYDROGUINONE COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
59 words
A PROCESS FOR PRODUCING BUTADIENE POLYMER WHICH COMPRISES POLYMERIZING 1, 3-BUTADIENE IN THE PRESENCE OF A CATALYST SYSTEM COMPRISING: A. AT LEAST ONE NICKEL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE HALIDES, SULFATES, ORGANIC ACIDS SALTS, COMPLEX COMPOUNDS, OTGANIC COORDINATION COMPOUNDS AND CHELATE COMPOUNDS THEREOF, F. A DIALKYLALUMINUM MONOFLOURIDE COMPOUND, AND D. A HYDROGUINONE COMPOUND HAVING THE FORMULA:
Claim 3
Dependent Claim
38 words
The process according to claim 1, wherein the molar ratios of the nickel compound to the dialkylaluminum monofluoride compound and the nickel compound to the hydroquinone compound are from 0.001 to 2 and from 0.01 to 100, respectively.
Claim 4
Dependent Claim
38 words
The process according to claim 1, wherein the molar ratios of the nickel compound to the dialkylaluminum monofluoride compound and the nickel compound to the hydroquinone compound are from 0.01 to 1 and from 0.1 to 10, respectively.
Claim 5
Dependent Claim
27 words
The process according to claim 1, wherein the nickel compound is an organic acid salt selected from the group consisting of nickel acetate, naphthenate, octanoate and sulfonate.
Claim 6
Dependent Claim
42 words
The process according to claim 1, wherein the nickel compound is a complex compound, organic coordination compound or chelate compound selected from the group consisting of nickel chloride-pyridine complex, tris(dipyridyl) nickel chloride, bis(ethylenediamine) nickel sulfate, bis-dimethylglyoxymato nickel, bis-ethylacetoacetate nickel and bis-acetylacetonate nickel.
Claim 7
Dependent Claim
31 words
The process according to claim 1, wherein the dialkylaluminum monofluoride compound is selected from the group consisting of dimethylaluminum monofluoride, diethylaluminum monofluoride, diisopropylaluminum monofluoride, di-n-butylaluminum monofluoride, diisobutylaluminum monofluoride and di-n-hexylaluminum monofluoride.
Claim 8
Dependent Claim
36 words
The process according to claim 1, wherein the hydroquinone compound is selected from the group consiSting of tetrachlorohydroquinone, 2,3,5-trichlorohydroquinone, 2,5-dichlorohydroquinone, 2-chlorohydroquinone, tetrabromohydroquinone, 2,3,5-tribromohydroquinone, 2,5-dibromohydroquinone, 2-bromohydroquinone, tetraiodohydroquinone, 2,3,5-triiodohydroquinone, 2,5-diiodohydroquinone, 2-iodohydroquinone, hydroquinone, 1,4-dihydroxynaphthalene, 1,4-dihydroxy-2,3-dichloronaphthalene, 9,10-dihydroxyanthracene, 1,4-dihydroxyanthracene and 1,4-dihydroxyphenanthrene.
Claim 9
Dependent Claim
21 words
The process according to claim 1, wherein the molar ratio of water to the dialkylaluminum monofluoride is from 0.05 to 1.5.
Claim 10
Dependent Claim
31 words
The process according to claim 1, wherein the molar ratio of the alcohol, the carboxylic acid and/or the phenol used together with water to the dialkylaluminum monofluoride is 0.01 to 0.5.
Claim 11
Dependent Claim
27 words
The process according to claim 1, wherein the nickel compound is used in an amount of 0.001 to 2 mmol based on 1 mol of monomeric 1,3-butadiene.
Claim 12
Dependent Claim
23 words
The process according to claim 1, wherein the polymerization is carried out in a liquid medium at a temperature from -30* to 150*C.
Claim 13
Dependent Claim
41 words
The process according to claim 1, wherein the dialkylaluminum monofluoride compound is obtained by reacting a trialkylaluminum compound with a perfluoroalkyl-substituted aromatic compound at a temperature from about -20* to 150*C in the presence or absence of an inert organic solvent.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |