US4562172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing high cis-1,4 diene polymers having good green strength and tack
Assignee: Bridgestone Firestone Inc
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Filing: 1985-03-04
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Granted: 1985-12-31
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Expires: 2005-03-04
Abstract
Abstract Diene polymers having a high content of cis-1,4 addition are prepared by polymerizing a 1,3-diene monomer in a hydrocarbon solvent in the presence of a catalyst composition comprising (a) a carboxylated metal oxy borate compound in which the metal is nickel or cobalt, (b) an organometallic compound of a metal of Groups I, II, and III of the Periodic System, and (c) one or more fluorine containing compounds selected from the group consisting of boron trifluoride complexes with ethers, alcohols or mixtures thereof; hydrogen fluoride; hydrogen fluoride complexes with ethers, alcohols, or mixtures thereof and mixtures of said compounds. The resultant polymers exhibit good green strength and tack and are particularly suitable for use as tire rubbers.
Inventors
- 👤 Jung W. Kang
- 👤 James E. Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:02
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
102 words
A catalyst composition comprising: (a) a carboxylated metal oxy borate compound selected from the group consisting of compounds represented by the formulae (RCOOMO) 3 B and (RCOOMO) 2 BOR', wherein R and R' are alkyl radicals containing from 7 to 17 carbon atoms, and M is nickel or cobalt; (b) an organometallic compound in which the metal is selected from Groups I, II, and III of the Periodic System; and (c) one or more fluorine containing compounds selected from the group consisting of boron trifluoride complexes with ethers, hydrogen fluoride complexes with ethers, alcohols or mixtures thereof and mixtures of said compounds.
Claim 2
Dependent Claim
102 words
A catalyst composition comprising: (a) a carboxylated metal oxy borate compound selected from the group consisting of compounds represented by the formulae (RCOOMO) 3 B and (RCOOMO) 2 BOR', wherein R and R' are alkyl radicals containing from 7 to 17 carbon atoms, and M is nickel or cobalt; (b) an organometallic compound in which the metal is selected from Groups I, II, and III of the Periodic System; and (c) one or more fluorine containing compounds selected from the group consisting of boron trifluoride complexes with ethers, hydrogen fluoride complexes with ethers, alcohols or mixtures thereof and mixtures of said compounds.
Claim 3
Dependent Claim
40 words
The catalyst composition of claim 1 wherein said carboxylated metal oxy borate compound is represented by the formula (RCOOMO) 3 B, wherein R is an alkyl radical containing from 7 to 11 carbon atoms and M is nickel or cobalt.
Claim 4
Dependent Claim
26 words
The catalyst composition of claim 1 wherein said organometallic compound is an organometallic compound selected from the group consisting of organoaluminum, organolithium, organomagnesium, and organozinc compounds.
Claim 5
Dependent Claim
13 words
The catalyst composition of claim 1 wherein said organometallic compound is triisobutyl aluminum.
Claim 6
Dependent Claim
13 words
The catalyst composition of claim 1 wherein said organometallic compound is n-butyl lithium.
Claim 7
Dependent Claim
55 words
The catalyst composition of claim 1 wherein said boron trifluoride complex is a boron trifluoride complex with an ether represented by the formula R'OR, wherein R and R' may be alkyl, cycloalkyl, aryl, alkaryl, and arylalkyl radicals containing from 1 to 30 carbon atoms and wherein R and R' may be the same or different.
Claim 8
Dependent Claim
17 words
The catalyst composition of claim 1 wherein said boron trifluoride ether complex is boron trifluoride diethyl ether.
Claim 9
Dependent Claim
41 words
The catalyst composition of claim 1 wherein said boron trifluoride complex is a boron trifluoride complex with an alcohol represented by the formula ROH, wherein R is an alkyl, cycloalkyl, aryl or arylalkyl radical containing from 1 to 30 carbon atoms.
Claim 10
Dependent Claim
22 words
The catalyst composition of claim 1 wherein said boron trifluoride alcohol complex is a boron trifluoride-ethanol complex or a boron trifluoride-octanol complex.
Claim 11
Dependent Claim
24 words
The catalyst composition of claim 1 wherein the molar ratio of components a:b:c of the catalyst composition ranges from about 1:1:1 to about 1:70:70.
Claim 12
Dependent Claim
18 words
The catalyst composition of claim 1 wherein the molar ratio of components a:b:c ranges from 1:1.5:1.5 to 1:15:15.
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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) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |