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US4200718A
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Multifunctional lithium containing initiator
Assignee: Dow Chemical Co
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Filing: 1977-12-12
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Granted: 1980-04-29
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Expires: 1997-12-12
Abstract
Abstract Highly desirable multifunctional lithium containing initiators are prepared by reacting a compound such as an organo lithium with an organic compound containing at least two 1,1-diphenylethylene groups. Such initiators can be prepared in the absence of polar solvents and are very desirable for the polymerization of dienes such as butadiene to a desirable 1,4 configuration. Several di-lithium compounds have been employed to initiate polymerization of various unsaturated organic monomers.
Inventors
- 👤 Lu H. Tung
- 👤 Grace Y-S. Lo
- 👤 Joseph W. Rakshys
- 👤 Douglas E. Beyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:11
CPC Classifications
C; C07; C07F; C07F17/00; C07F17/02; C07F1/00; C07F1/02; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
215 words
A method for the polymerization of vinyl compounds containing at least one vinyl group and particularly vinyl hydrocarbon compounds which are polymerizable in the presence of a lithium containing catalyst, the steps of the method comprising provding a compound of the Formula: ##STR35## wherein R 1 is individually selected from the group consisting of hydrogen, an alkyl hydrocarbon radical, a cycloalkyl hydrocarbon radical, alkoxy radical, and an aromatic radical with the further limitation that R 1 contains from 0 to 16 carbon atoms; R 2 is a divalent organic radical having at least 6 carbon atoms, R 2 having at least one aromatic ring, the aromatic ring being directly attached to the carbon which is attached to the aromatic ring in the above formula with the further limitation R 2 contains carbon and hydrocarbon, and optionally oxygen or sulfur, oxygen and sulfur when present are present only in the configuration of a diphenyl oxide or diphenyl sulfide, and a lithium containing compound of the Formula: R.sub.3 Li R 3 is selected from the group consisting of alkyl, cycloalkyl, and aromatic radicals containing from 1 to 20 carbon atoms, to provide a multifunctional lithium compound having the Formula: ##STR36## subsequently contacting the resultant dispersion with at least one lithium polymerizable monomer to cause the polymerization thereof.
Claim 2
Independent Claim
215 words
A method for the polymerization of vinyl compounds containing at least one vinyl group and particularly vinyl hydrocarbon compounds which are polymerizable in the presence of a lithium containing catalyst, the steps of the method comprising provding a compound of the Formula: ##STR35## wherein R 1 is individually selected from the group consisting of hydrogen, an alkyl hydrocarbon radical, a cycloalkyl hydrocarbon radical, alkoxy radical, and an aromatic radical with the further limitation that R 1 contains from 0 to 16 carbon atoms; R 2 is a divalent organic radical having at least 6 carbon atoms, R 2 having at least one aromatic ring, the aromatic ring being directly attached to the carbon which is attached to the aromatic ring in the above formula with the further limitation R 2 contains carbon and hydrocarbon, and optionally oxygen or sulfur, oxygen and sulfur when present are present only in the configuration of a diphenyl oxide or diphenyl sulfide, and a lithium containing compound of the Formula: R.sub.3 Li R 3 is selected from the group consisting of alkyl, cycloalkyl, and aromatic radicals containing from 1 to 20 carbon atoms, to provide a multifunctional lithium compound having the Formula: ##STR36## subsequently contacting the resultant dispersion with at least one lithium polymerizable monomer to cause the polymerization thereof.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein R 2 contains from 6 to 12 carbon atoms.
Claim 4
Dependent Claim
12 words
The method of claim 2 wherein R 2 is a 1,4-phenylene radical.
Claim 5
Dependent Claim
12 words
The method of claim 2 wherein R 2 is a 4,4'-biphenylene radical.
Claim 6
Dependent Claim
12 words
The method of claim 2 wherein R 2 is a 4,4'-oxybisphenylene radical.
Claim 7
Dependent Claim
13 words
The method of claim 1 wherein R 3 is a secondary butyl radical.
Claim 8
Dependent Claim
62 words
The method of claim 1 including the step of contacting the dilithium compound of claim 1 with from 20 to 200 moles per mole of the dilithium compound of a member selected from the group consisting of butadiene, isoprene and mixtures thereof prior to contacting with the lithium polymerizable monomer thereby forming a hydrocarbon soluble adduct of the dilithium compound and diene.
Claim 9
Dependent Claim
13 words
The method of claim 1 wherein the multifunctional lithium containing compound is 1,4-phenylenebis(3-methyl-1-phenylpentylidene)bis(lithium).
Claim 10
Dependent Claim
13 words
The method of claim 1 wherein the multifunctional lithium containing compound is (1,1'-biphenyl)-4,4'-diylbis(3-methyl-1-phenylpentylidene)bis(lithium).
Claim 11
Dependent Claim
13 words
The method of claim 1 wherein the multifunctional lithium containing compound is oxydi-4,1-phenylenebis(3-methyl-1-phenylpentylidene)bis(lithium).
Claim 12
Dependent Claim
13 words
The method of claim 1 wherein the multifunctional lithium containing compound is (1-methylethylidene)-bis-[4,1-phenylene(3-methyl-1-phenylpentylidene)]bis(lithium).
Claim 13
Independent Claim
155 words
A method for the polymerization of vinyl compounds containing at least one vinyl group and particularly vinyl hydrocarbon compounds which are polymerizable in the presence of a lithium containing catalyst, the steps of the method comprising providing a compound of the Formula: ##STR37## wherein R 1 is individually selected from the group consisting of hydrogen, an alkyl hydrocarbon radical, a cycloalkyl hydrocarbon radical, alkoxy radical, and an aromatic radical with the further limitation that R 1 contains from 0 to 16 carbon atoms; R 2 is a divalent organic radical having the configuration of a diphenyl oxide; and a lithium containing compound of the Formula: R.sub.3 Li R 3 is selected from the group consisting of alkyl, cycloalkyl, and aromatic radicals containing from 1 to 20 carbon atoms, to provide a multifunctional lithium compound having the Formula: ##STR38## subsequently contacting the resultant dispersion with at least one lithium polymerizable monomer to cause the polymerization thereof.
Claim 14
Independent Claim
155 words
A method for the polymerization of vinyl compounds containing at least one vinyl group and particularly vinyl hydrocarbon compounds which are polymerizable in the presence of a lithium containing catalyst, the steps of the method comprising providing a compound of the Formula: ##STR37## wherein R 1 is individually selected from the group consisting of hydrogen, an alkyl hydrocarbon radical, a cycloalkyl hydrocarbon radical, alkoxy radical, and an aromatic radical with the further limitation that R 1 contains from 0 to 16 carbon atoms; R 2 is a divalent organic radical having the configuration of a diphenyl oxide; and a lithium containing compound of the Formula: R.sub.3 Li R 3 is selected from the group consisting of alkyl, cycloalkyl, and aromatic radicals containing from 1 to 20 carbon atoms, to provide a multifunctional lithium compound having the Formula: ##STR38## subsequently contacting the resultant dispersion with at least one lithium polymerizable monomer to cause the polymerization thereof.
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) | 1983-04-29 | 1983-10-29 | 1984-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-29 | 1987-10-29 | 1988-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-29 | 1991-10-29 | 1992-04-29 | $7700.00 | Window Closed / Lapsed |