US Patent No: 5,552,499
Number of patents in Portfolio can not be more than 2000
Process of preparing reduced hysteresis products using anionic polymerization initiators
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Sep 3, 1996
Issued date -
Jun 6, 1995
filing date -
08/469,151
serial no -
In Force
status
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Abstract
The present invention is directed toward anionic polymerization employing lithio amines mixed with an organic alkali metal compound and optionally, a chelating reagent. The lithio amines have the general formula (A)Li(SOL).sub.y, where SOL is a solubilizing component, A is an alkyl, dialkyl, cycloalkyl or dicycloalkyl amine radical or a cyclic amine, and y is 0 or is from about 0.5 to about 3. The invention is also directed toward polymers and other products made using the initiator, and methods therefor. Further, the invention contemplates a polymer, a polymer composition and products therefrom, which include a functional group from the reaction product of an amine and an organolithium compound. The resulting polymers may be terminated with a terminating, coupling or linking agent, which may provide the polymer with a multifunctionality.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,112,929 Oxolanyl cyclic acetals as anionic polymerization modifiers | 39 | 1991 | |
| 5,238,893 Method of preparing an anionic polymerization initiator | 40 | 1991 | |
| 5,292,790 Conjugated diene series rubber compositions | 34 | 1992 | |
| 5,332,810 Solubilized anionic polymerization initiator and preparation thereof | 57 | 1992 | |
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| 4,835,209 Rubber for tire treads and compositions thereof | 50 | 1987 | |
| 5,115,035 Terminal-modified block copolymer and compositions containing the same | 51 | 1989 | |
| 4,931,376 Crystalline trans-butadiene polymers | 113 | 1989 | |
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| 4,515,922 Rubber compositions | 43 | 1984 | |
| 4,894,409 Rubber composition | 55 | 1988 | |
| 4,914,147 Pneumatic tires | 58 | 1988 | |
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| 4,614,771 Process for making diene copolymer rubbers | 53 | 1985 | |
| 4,616,069 Process for making diene polymer rubbers | 69 | 1985 | |
| 4,677,153 Method for modifying rubbers | 44 | 1986 | |
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| 4,647,634 Randomizers for use in solution polymerizations | 30 | 1986 | |
| 4,843,120 Rubber composition | 91 | 1986 | |
| 4,935,471 Capped polydienes | 73 | 1987 | |
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| 4,791,174 Polymers containing amino groups, their preparation and their use | 59 | 1987 | |
| 4,816,520 Terminally functionalized polymers and preparation thereof | 49 | 1987 | |
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| 5,066,729 Diene polymers and copolymers terminated by reaction with N-alkyl and N-aryl imines | 88 | 1990 | |
| 5,153,159 Elastomers and products having reduced hysteresis | 43 | 1990 | |
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| 4,247,418 Polymerization catalyst and process for polymerizing dienes therewith | 41 | 1979 | |
| 5,393,721 Anionic polymerization initiators and reduced hysteresis products therefom | 42 | 1992 | |
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| 4,414,372 Process for preparing living polymers | 107 | 1982 | |
| 4,736,003 Enhanced livingness of polymerization using silylated oxyanions | 44 | 1987 | |
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| 4,734,461 Method for the termination of polymers obtained by the anionic polymerization of dienic and/or vinylaromatic monomers, and compounds suitable to that purpose | 37 | 1986 | |
| 4,735,994 Method for the termination of living polymers and compounds suitable to that purpose | 42 | 1986 | |
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| 4,476,240 Catalyst system containing an anionic initiator based on lithium and phosphine oxide modifier | 55 | 1982 | |
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| 4,383,085 Rubber composition for tire | 51 | 1981 | |
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| 5,149,457 Stable mixed lithium amide reagent compositions | 39 | 1989 | |
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| 4,478,953 Polymerization process of optically active polymer and catalyst therefor | 43 | 1983 | |
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| 4,429,091 Oligomeric oxolanyl alkanes as modifiers for polymerization of dienes using lithium-based initiators | 98 | 1983 | |
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| 4,978,754 Preparation process of unsaturated carboxylic acid amide | 32 | 1988 | |
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| 4,316,001 Anionic polymerization of heterocyclic monomers with alkali metal amide hydroxylated compound initiator | 37 | 1979 | |