US4092268A
Expired / Lapsed
US
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Catalytic composition
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1976-02-23
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Granted: 1978-05-30
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Expires: 1996-02-23
Abstract
Abstract Polymers of conjugated dienes and copolymers of conjugated dienes with vinyl aromatic compounds or with other conjugated dienes having a high content of trans-1,4 linkages and a low content of 1,2 or 3,4 linkages and an elastomeric character are prepared by use of a catalytic composition which comprises (a ) an organo-lithium initiator and (b) a cocatalyst system comprising a compound of barium or strontium and an organometallic compound of a metal of Group IIB or IIIA of the Mendeleev periodic table of elements.
Inventors
- 👤 Yves de Zarauz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:06
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/14; B01J31/143; B01J31/0201; B01J31/0211; B01J31/0214; B01J31/128; C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
245 words
A catalytic composition for the polymerization and copolymerization of olefins consisting of a. a lithium initiator selected from the group consisting of metallic lithium, ethyl-lithium, n-butyl lithium, isobutyl-lithium, sec.-butyl-lithium, ter.-butyl-lithium, isopropyl-lithium, n-amyl-lithium, isoamyl-lithium, allyl-lithium, propenyl-lithium, isobutenyl-lithium, polybutadienyl-lithium, polyisoprenyl-lithium, polystyryl-lithium, 1, 4-dilithium butane, 1-5-dilithium pentane, 1, 20-dilithium eicosane, benzyl-lithium, phenyl-lithium, 1, 1-diphenylmethyl-lithium, the polylithium reaction product of metallic lithium with 1, 1-diphenylethylene, the polylithium reaction product of metallic lithium with trans-stilbene, the polylithium reaction product of metallic lithium with tetraphenylethylene, lithium-naphthalene, lithiumanthracene, lithium-chrysene and lithiumdiphenyl; and b. a cocatalyst system consisting of (b 1 ) a compound of barium or strontium selected from the group consisting of barium hydride, strontium hydride, barium naphthenate, barium methanolate, strontium methanolate, barium ethanolate, strontium ethanolate, barium tertio-butanolate, barium nonylphenate, barium acetylacetonate, strontium acetylacetonate, barium dibenzoylmethane, strontium dibenzoylmethane, barium thenoyltrifluoroacetonate, strontium thenoyltrifluoro-acetonate, barium benzoyltrifluoro-acetonate, strontium benzolytrifluoro-acetonate, barium benzoyl-acetonate, strontium benzoyl-acetonate, barium 1, 1-diphenylethylene, strontium 1, 1-diphenylethylene, barium 1, 2-acenaphthylene, strontium 1, 2-acenaphthylene, barium tetraphenyl-butane, strontium tetraphenylbutane, barium alpha-methyl-styrene, strontium alpha-methyl-styrene, diphenyl-barium, diphenylstrontium, bis-cyclopentadienyl-barium, bis-cyclopentadienyl-strontium, barium triphenylsilyl, strontium triphenylsilyl, phenyl-barium iodide, methyl-strontium iodide, barium-benzophenone, strontium-benzophenone, barium-cinnamone, strontium-cinnamone, barium-naphthalene, strontium-naphthalene, barium-anthracene, strontium-anthracene, barium-chrysene and strontium-chrysene; and (b 2 ) an organometallic compound of aluminum or zinc selected from the group consisting of diethyl zinc, triethyl aluminum, tri-isobutyl aluminum, diethyl aluminum chloride, ethyl aluminum dichloride, ethyl aluminum sesquichloride, methyl aluminum sesquichloride, diethyl aluminum hydride and diisobutyl aluminum hydride; said components being present in such quantities that the ratios are within the following limits: ##EQU2##
Claim 2
Dependent Claim
245 words
A catalytic composition for the polymerization and copolymerization of olefins consisting of a. a lithium initiator selected from the group consisting of metallic lithium, ethyl-lithium, n-butyl lithium, isobutyl-lithium, sec.-butyl-lithium, ter.-butyl-lithium, isopropyl-lithium, n-amyl-lithium, isoamyl-lithium, allyl-lithium, propenyl-lithium, isobutenyl-lithium, polybutadienyl-lithium, polyisoprenyl-lithium, polystyryl-lithium, 1, 4-dilithium butane, 1-5-dilithium pentane, 1, 20-dilithium eicosane, benzyl-lithium, phenyl-lithium, 1, 1-diphenylmethyl-lithium, the polylithium reaction product of metallic lithium with 1, 1-diphenylethylene, the polylithium reaction product of metallic lithium with trans-stilbene, the polylithium reaction product of metallic lithium with tetraphenylethylene, lithium-naphthalene, lithiumanthracene, lithium-chrysene and lithiumdiphenyl; and b. a cocatalyst system consisting of (b 1 ) a compound of barium or strontium selected from the group consisting of barium hydride, strontium hydride, barium naphthenate, barium methanolate, strontium methanolate, barium ethanolate, strontium ethanolate, barium tertio-butanolate, barium nonylphenate, barium acetylacetonate, strontium acetylacetonate, barium dibenzoylmethane, strontium dibenzoylmethane, barium thenoyltrifluoroacetonate, strontium thenoyltrifluoro-acetonate, barium benzoyltrifluoro-acetonate, strontium benzolytrifluoro-acetonate, barium benzoyl-acetonate, strontium benzoyl-acetonate, barium 1, 1-diphenylethylene, strontium 1, 1-diphenylethylene, barium 1, 2-acenaphthylene, strontium 1, 2-acenaphthylene, barium tetraphenyl-butane, strontium tetraphenylbutane, barium alpha-methyl-styrene, strontium alpha-methyl-styrene, diphenyl-barium, diphenylstrontium, bis-cyclopentadienyl-barium, bis-cyclopentadienyl-strontium, barium triphenylsilyl, strontium triphenylsilyl, phenyl-barium iodide, methyl-strontium iodide, barium-benzophenone, strontium-benzophenone, barium-cinnamone, strontium-cinnamone, barium-naphthalene, strontium-naphthalene, barium-anthracene, strontium-anthracene, barium-chrysene and strontium-chrysene; and (b 2 ) an organometallic compound of aluminum or zinc selected from the group consisting of diethyl zinc, triethyl aluminum, tri-isobutyl aluminum, diethyl aluminum chloride, ethyl aluminum dichloride, ethyl aluminum sesquichloride, methyl aluminum sesquichloride, diethyl aluminum hydride and diisobutyl aluminum hydride; said components being present in such quantities that the ratios are within the following limits: ##EQU2##
Claim 3
Dependent Claim
24 words
The catalytic composition according to claim 1 wherein said components are present in such quantities that the ratios are within the following limits: ##EQU3##
Claim 4
Dependent Claim
16 words
The catalytic composition according to claim 1 consisting of n-butyl lithium, barium nonylphenate and triethyl aluminum.
Claim 5
Dependent Claim
16 words
The catalytic composition according to claim 1 consisting of n-butyl lithium, dibenzoylmethane barium and triethyl aluminum.
Claim 6
Dependent Claim
36 words
A process of preparing the catalytic composition defined by claim 1 which comprises preforming the cocatalyst system by mixing together the components thereof which have been previously placed in solution or suspension in a hydrocarbon solvent.
Claim 7
Dependent Claim
14 words
The process according to claim 5 wherein the hydrocarbon solvent is heptane or toluene.
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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) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |