Patent US3228621A successfully refreshed from Google Patents.
EP0152175A2
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Process for producing a diene polymer
Assignee: JSR Corp
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Filing: 1985-01-14
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Granted: —
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Expires: 2005-01-14
Abstract
Abstract A process for producing a diene polymer, characterized by polymerizing a conjugated diene in an aqueous system in the presence of a catalyst system prepared by adding, to a catalyst obtained preliminarily by contacting (A) a cobalt compound with (B) an organometalic compound or hydride of a metal of Groups I to III of the Periodic Table in the presence of 1 to 100 moles, per mole of (A), of a conjugaged diene, (C) at least one member selected from the group consisting of carbon disulfide, phenylisothiocyanic acid and a xanthogen compound and further in the presence of at least one member selected from the group consisting of a surfactant, a dispersant and a polymer solution. According to this process, there can be obtained a bead polymer having a uniform particle diameter in a good dispersion state.
Inventors
- 👤 Hisao Ono
- 👤 Yoshio Matsumura
- 👤 Eitaro Okuya
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 19:56
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
116 words
A process for producing a diene polymer, characterized by polymerizing a conjugated diene in an aqueous system in the presence of a catalyst system prepared by adding, to a catalyst obtained preliminarily by contacting (A) a cobalt compound with (B) an organometallic compound or hydride of a metal of Groups I to III of the Periodic Table in the presence of 1 to 100 moles, per mole of (A), of a conjugated diene, (C) at least one member selected from the group consisting of carbon disulfide, phenylisothiocyanic acid and a xanthogen compound and further in the presence of at least one member selected from the group consisting of a surfactant, a dispersant and a polymer solution.
Claim 2
Dependent Claim
116 words
A process for producing a diene polymer, characterized by polymerizing a conjugated diene in an aqueous system in the presence of a catalyst system prepared by adding, to a catalyst obtained preliminarily by contacting (A) a cobalt compound with (B) an organometallic compound or hydride of a metal of Groups I to III of the Periodic Table in the presence of 1 to 100 moles, per mole of (A), of a conjugated diene, (C) at least one member selected from the group consisting of carbon disulfide, phenylisothiocyanic acid and a xanthogen compound and further in the presence of at least one member selected from the group consisting of a surfactant, a dispersant and a polymer solution.
Claim 3
Dependent Claim
24 words
A process according to Calim 1, wherein the polymerization of a conjugated diene is conducted in the presence of a surfactant and a dispersant.
Claim 4
Dependent Claim
24 words
A process according to Calim 1, wherein the polymerization of a conjugated diene is conducted in the presence of a surfactant and a dispersant.
Claim 5
Dependent Claim
27 words
A process according to Claim 1, wherein the dispersant is at least one member selected from the group consisting of protective colloid substances, metal chlorides and phosphates.
Claim 6
Dependent Claim
14 words
A process according to Claim 1, wherein the dispersant is a protective colloid substance.
Claim 7
Dependent Claim
25 words
A process according to Claim 1, wherein the surfactant is at least one member selected from the group consisting of anionic, cationic and nonionic surfactants.
Claim 8
Dependent Claim
34 words
A process according to Claim 1, wherein the amount of at least one member selected from a surfactant and a dispersant is 30 to 0.0001 g per 100 g of the conjugated diene monomer.
Claim 9
Dependent Claim
34 words
A process according to Claim 6, wherein the amount of at least one member selected from a surfactant and a dispersant is 10 to 0.001 g per 100 g of the conjugated diene monomer.
Claim 10
Dependent Claim
22 words
A process according to Claim 1, wherein the polymerization of a conjugated diene is conducted in the presence of a polymer solution.
Claim 11
Dependent Claim
31 words
A process according to Claim 1, wherein the polymer in the polymer solution is at least one member selected from the group consisting of natural rubber, synthetic rubbers and synthetic resins.
Claim 12
Dependent Claim
36 words
A process according to Claim 1, wherein the solvent in the polymer solution is at least one member selected from the group consisting of aliphatic hydrocarbons, aromatic hydrocarbons, halogenated hydrocarbons, esters, alcohols, ketones, nitriles and amides.
Claim 13
Dependent Claim
22 words
A process according to Claim 1, wherein the concentration of the polymer in the polymer solution is 0.1 to 50% by weight.
Claim 14
Dependent Claim
22 words
A process according to Claim 1, wherein the concentration of the polymer in the polymer solution is 1 to 20% by weight.
Claim 15
Dependent Claim
48 words
A process according to Claim 1, wherein the cobalt compound (A) is at least one member selected from the group consisting of organic acid salts of cobalt, acetonate complexes of cobalt, triarylphosphine complexes of cobalt halides, pyridine derivative complexes of cobalt halides and alcohol complexes of cobalt halides.
Claim 16
Dependent Claim
32 words
A process according to Claim 1, wherein the metal of the catalyst component (B) is at least one member selected from the group consisting of Li, Na, K, Mg, Zn and Al.
Claim 17
Dependent Claim
28 words
A process according to Claim 1, wherein the metal of the cobalt compound (B) is at least one member selected from the group consisting of Li and Al.
Claim 18
Dependent Claim
26 words
A process according to Claim 1, wherein the catalyst component (B) is a hydride of a metal of Groups I to III of the Periodic Table.
Claim 19
Dependent Claim
36 words
A process according to Claim 1, wherein the metal hydride as the catalyst component (B) is at least one member selected from the group consisting of lithium aluminum hydride, sodium boron hydride and lithium boron hydride.
Claim 20
Dependent Claim
31 words
A process according to Claim 1, wherein the metal of the catalyst component (B) is at least one member selected from the group consisting of Li, Na, K, Mg and Zn.
Claim 21
Dependent Claim
24 words
A process according to Claim 1, wherein the molar ratio of the conjugated diene to the cobalt compound (A) is from 6 to 50.
Claim 22
Dependent Claim
25 words
A process according to Claim 1, wherein the molar ratio of the catalyst component (B) to the catalyst component (A) is from 0.3 to 100.
Claim 23
Dependent Claim
25 words
A process according to Claim 1, wherein the molar ratio of the catalyst component (B) to the catalyst component (A) is from 0.9 to 50.
Claim 24
Dependent Claim
25 words
A process according to Claim 1, wherein the catalyst component (A) is contacted with the catalyst component (B) at a temperature of -30° to 50°C.
Claim 25
Dependent Claim
39 words
A process according to Claim 1, wherein the contact between the catalyst component (A) and the catalyst component (B) is conducted in at least one solvent selected from the group consisting of aliphatic hydrocarbons, aromatic hydrocarbons and conjugated dienes.
Claim 26
Dependent Claim
13 words
A process according to Claim 1, wherein the component (C) is carbon disulfide.
Claim 27
Dependent Claim
39 words
A process according to Claim 1, wherein the component C) is preliminarily added to at least one member selected from the group consisting of a conjugated diene, a solution of a monomer in a solvent and a water medium.
Claim 28
Dependent Claim
28 words
A process according to Claim 1, wherein the component (C) is added to the polymerization system after the components (A) and (B) have been added to the system.
Claim 29
Dependent Claim
27 words
A process according to Claim 1, wherein the component (C) is added at a proportion of 0.01 to 100 moles per mole of the cobalt compound (A).
Claim 30
Dependent Claim
27 words
A process according to Claim 1, wherein the componen (C) is added at a proportion of 0.3 to 10 moles per mole of the cobalt compound (A).
Claim 31
Dependent Claim
25 words
A process according to Claim 1, wherein the conjugated diene monomer is at least one member selected from the group consisting of butadiene and isoprene.
Claim 32
Dependent Claim
56 words
A process according to Claim 1, wherein the polymerization system is prepared by mixing a solution of a polymer in an organic solvent, water and a conjugated diene with a catalyst obtained preliminarily by contacting the component (A) with the component (B) in the presence of a conjugated diene, and then adding the component (C) thereto.
Claim 33
Dependent Claim
23 words
A process according to Claim 1, wherein at least one member selected from a surfactant and a dispersant is preliminarily added to water.
Claim 34
Dependent Claim
37 words
A process according to Claim 1, wherein at least one member selected from a surfactant and a dispersant is added to the polymerization system after the components (A) and (B) have been added to the polymerization system.
Claim 35
Dependent Claim
57 words
A process according to Claim 1, wherein the polymerization system is prepared by mixing the component (C) with a solution of a polymer in an organic solvent, water and a conjugated diene monomer and then adding thereto a catalyst obtained preliminarily by contacting the component (A) with the component (B) in the presence of a conjugated diene.
Claim 36
Dependent Claim
49 words
A process according to Claim 1, wherein at least one member selected from the group consisting of an antioxidant, an ultraviolet absorber, a foaming agent, a flame retardant, a lubricant, a processing adjuvant, a filler, a dye, a pigment and a polymerization initiator is added to the polymerization system.
Claim 37
Dependent Claim
36 words
A process according to Claim 1, wherein at least one member selected from the group consisting of an antioxidant, a foaming agent, a processing adjuvant and a radical generating agent is added to the polymerization system.
References Cited (Backward Citations)
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