Claims
- 1. An organolithium initiator prepared by reacting at least one hydrocarbon lithium compound with at least one polyalkoxy monovinyl-substituted aromatic compound in a ratio effective to result in said organolithium initiator, wherein said polyalkoxy monovinyl-substituted aromatic compound is characterized by at least two adjacent alkoxy groups on a benzene ring nucleus.
- 2. The organolithium initiator according to claim 1 wherein said polyalkoxy monovinyl-substituted aromatic compound is represented by ##STR2## wherein each R is hydrogen, alkoxy --OR', hydrocarbyl, or halogen, such that at least two R groups are OR' and are adjacent, wherein R' is an alkyl radical, R groups where hydrocarbyl are alkyl, cycloalkyl, or aryl, wherein two adjacent R groups together with the corresponding carbons of the aromatic nucleus can be a 5 to 10 membered ring system, and wherein said halogen is fluorine or chlorine.
- 3. The organolithium initiator according to claim 2 wherein the total number of carbon atoms in said polyalkoxy monovinyl-substituted aromatic compound is 10 to 20.
- 4. The organolithium initiator according to claim 3 wherein said polyalkoxy monovinyl-substituted aromatic compound is 3,4-dimethoxystyrene, 3,4-diethoxy-5-methylstyrene, 3,4-dimethoxy-5-cyclohexylstyrene, 3,4-dimethoxy-5-(1,3-dimethylbutyl)styrene, 3,4-di-(n-propoxy)-5-fluorostyrene, 3-vinyl-5,6-dimethoxybiphenyl, 1-vinyl-3,4-dimethoxy-5-ethyl-6-chloro-7-fluoronaphthalene, 3,4,5-triethoxystyrene, pentamethoxystyrene, 3,4-dimethoxy-5-(p-tolyl)styrene, or mixture.
- 5. The organolithium initiator according to claim 3 wherein said hydrocarbon lithium compound is represented by the formula R"Li.sub.x wherein R" represents a hydrocarbon radical and x an integer of 1 to 4 inclusive, and said hydrocarbon lithium compound contains up to 20 carbon atoms per molecule.
- 6. The organolithium initiator according to claim 5 wherein said effective ratio of said hydrocarbon lithium compound to said polyalkoxy monovinyl-substituted aromatic compound is in the range of about 0.00035 to 1 to 3.5 to 1.
- 7. The organolithium initiator according to claim 6 wherein said hydrocarbon lithium compound is methyllithium, isopropyllithium, butyllithium, t-octyllithium, n-decyllithium, phenyllithium, naphthyllithium, 4-butylphenyllithium, p-tolyllithium, 4-phenylbutyllithium, cyclohexyllithium, 4-butylcyclohexyllithium, 4-cyclohexylbutyllithium, dilithiomethane, 1,4-dilithiobutane, 1,10-dilithiodecane, 1,20-dilithioeicosane, 1,4-dilithiocyclohexane, 1,4-dilithio-2-butene, 1,8-dilithio-3-decene, 1,4-dilithiobenzene, 1,5-dilithionaphthalene, 1,2-dilithio-1,2-diphenylethane, 9,10-dilithio-9,10-dihydroanthracene, 1,2-dilithio-1,8-diphenyloctane, 1,3,5-trilithiopentane, 1,5,15-trilithioeicosane, 1,3,5-trilithiocyclohexane, 1,2,5-trilithionaphthalene, 1,3,5-trilithioanthracene, 1,3,5,8-trilithiodecane, 1,5,10,20-tetralithioeicosane, 1,2,3,5-tetralithiocyclohexane, or 1,2,3,5-tetralithio-4-hexylanthracene.
- 8. The organolithium initiator according to claim 6 wherein said hydrocarbon lithium compound is a hydrocarbon monolithium compound.
- 9. The organolithium initiator according to claim 8 wherein said polyalkoxy monovinyl-substituted aromatic compound is 3,4-dimethoxystyrene, and said hydrocarbon monolithium compound is n-butyllithium.
- 10. The organolithium initiator prepared by the process which comprises contacting at least one hydrocarbon lithium compound with at least one polyalkoxy monovinyl-substituted aromatic compound in a ratio sufficient to provide said organolithium initiator, wherein said contacting is conducted in a hydrocarbon diluent under a pressure sufficient to maintain the reactants and diluent substantially in the liquid phase,
- wherein said hydrocarbon lithium compound is represented by the formula R"Li.sub.x wherein R" is a hydrocarbon radical of up to 20 carbon atoms, and x is an integer of 1 to 4 inclusive; and
- said polyalkoxy monovinyl-substituted aromatic compound is represented by ##STR3## wherein each R is hydrogen, alkoxy --OR', hydrocarbyl, or halogen, such that at least two R groups are OR' and are adjacent, wherein R' is an alkyl radical, R groups where hydrocarbyl are alkyl, cycloalkyl, or aryl, and wherein two adjacent R groups together with the corresponding carbons of the aromatic nucleus can be a 5 to 10 membered ring system, wherein said halogen is fluorine or chlorine, and wherein said polyalkoxy monovinyl-substituted aromatic compound contains 10 to 20 carbon atoms per molecule.
- 11. The organolithium initiator according to claim 10 employing a ratio of said hydrocarbon lithium compound to said polyalkoxy monovinyl-substituted aromatic compound of about 0.00035 to 1 to 3.5 to 1.
- 12. The organolithium initiator according to claim 11 wherein in said hydrocarbon lithium compound said R" is aliphatic, cycloaliphatic, aromatic, or combination radical.
- 13. The organolithium initiator according to claim 12 wherein said hydrocarbon lithium compound is a hydrocarbon monolithium compound, and said ratio is about 0.3:1 to 1.4:1.
- 14. The organolithium initiator according to claim 13 wherein said polyalkoxy monovinyl-substituted aromatic compound is 3,4-dimethoxystyrene, and said hydrocarbon monolithium compound is n-butyllithium.
Parent Case Info
This application is a divisional application of Ser. No. 372,240, filed June 21, 1973, now U.S. Pat. No. 3,931,107 issued Jan. 6, 1976.
US Referenced Citations (9)
Divisions (1)
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Number |
Date |
Country |
Parent |
372240 |
Jun 1973 |
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