US4196154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soluble multifunctional lithium containing initiator
Assignee: Dow Chemical Co
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Filing: 1978-08-07
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Granted: 1980-04-01
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Expires: 1998-08-07
Abstract
Abstract Highly desirable organic liquid soluble multifunctional lithium containing initiators are prepared by reacting an organo lithium compound with an organic compound containing at least one group of the configuration 1,3-bis(1-phenylethenyl)benzene. 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.
Inventors
- 👤 Lu H. Tung
- 👤 Grace Y-S. Lo
- 👤 Douglas E. Beyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:54
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/42; C08F4/44; C08F4/46; C08F4/48; C08F4/486; C08F4/488
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
55 words
A multifunctional, lithium containing, polymerization initiating compound of the Formula: ##STR15## wherein R 1 and R 3 are individually selected from the group consisting of hydrogen, alkyl hydrocarbon radicals, and alkoxy radicals, with the further limitation that R 1 and R 3 contain from 0 to 16 carbon atoms, R 2 is a hydrocarbyl radical.
Claim 2
Dependent Claim
55 words
A multifunctional, lithium containing, polymerization initiating compound of the Formula: ##STR15## wherein R 1 and R 3 are individually selected from the group consisting of hydrogen, alkyl hydrocarbon radicals, and alkoxy radicals, with the further limitation that R 1 and R 3 contain from 0 to 16 carbon atoms, R 2 is a hydrocarbyl radical.
Claim 3
Dependent Claim
13 words
The compound of claim 1 wherein R 1 and R 3 are hydrogen.
Claim 4
Dependent Claim
22 words
The compound of claim 1 wherein one R 1 on each aromatic ring is methyl and remaining R 1 's are hydrogen.
Claim 5
Dependent Claim
11 words
The compound of claim 1 wherein R 2 is secondary butyl.
Claim 6
Dependent Claim
19 words
The compound of claim 1 wherein R 1 and R 3 are hydrogen and R 2 is secondary butyl.
Claim 7
Dependent Claim
30 words
The compound of claim 1 wherein one R 1 on each aromatic ring is methyl, the remaining R 1 's and R 3 are hydrogen, R 2 is secondary butyl.
Claim 8
Dependent Claim
115 words
A solution particularly suited for the initiation of polymerization of a vinyl group containing compound which are polymerizable in the presence of a lithium containing initiator, particularly vinyl hydrocarbon compounds, the solution comprising a major portion of a solvent selected from the group consisting of liquid aliphatic, cycloaliphatic and aromatic hydrocarbons and mixtures thereof and a minor proportion of a multifunctional lithium containing polymerization initiating compound of the Formula: ##STR16## wherein R 1 and R 3 are individually selected from the group consisting of hydrogen, alkyl hydrocarbon radicals and alkoxy radicals, with the further limitation that R 1 and R 3 contain from 0 to 16 carbon atoms, and R 2 is a hydrocarbyl radical.
Claim 9
Dependent Claim
115 words
A solution particularly suited for the initiation of polymerization of a vinyl group containing compound which are polymerizable in the presence of a lithium containing initiator, particularly vinyl hydrocarbon compounds, the solution comprising a major portion of a solvent selected from the group consisting of liquid aliphatic, cycloaliphatic and aromatic hydrocarbons and mixtures thereof and a minor proportion of a multifunctional lithium containing polymerization initiating compound of the Formula: ##STR16## wherein R 1 and R 3 are individually selected from the group consisting of hydrogen, alkyl hydrocarbon radicals and alkoxy radicals, with the further limitation that R 1 and R 3 contain from 0 to 16 carbon atoms, and R 2 is a hydrocarbyl radical.
Claim 10
Dependent Claim
13 words
The solution of claim 7 wherein R 1 and R 3 are hydrogen.
Claim 11
Dependent Claim
22 words
The solution of claim 7 wherein one R 1 on each aromatic ring is methyl and remaining R 1 's are hydrogen.
Claim 12
Dependent Claim
11 words
The solution of claim 7 wherein R 2 is secondary butyl.
Claim 13
Dependent Claim
19 words
The solution of claim 7 wherein R 1 and R 3 are hydrogen and R 2 is secondary butyl.
Claim 14
Dependent Claim
31 words
The solution of claim 7 wherein one R 1 on each aromatic ring is methyl, R 2 is secondary butyl and the remaining R 1 's and R 3 are hydrogen.
Claim 15
Dependent Claim
12 words
The solution of claim 7 wherein the solvent is an aromatic hydrocarbon.
Claim 16
Dependent Claim
10 words
The solution of claim 7 wherein the solvent is cyclohexane.
Claim 17
Dependent Claim
11 words
The solution of claim 7 wherein the solvent is normal hexane.
References Cited (Backward Citations)
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US3776964A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |