Patent US4522988A successfully refreshed from Google Patents.
US4522988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing high cis-1,4 diene polymers having good green strength and tack
Assignee: Firestone Polymers LLC
•
Filing: 1984-06-04
•
Granted: 1985-06-11
•
Expires: 2004-06-04
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
2026-11-05 13:50
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
146 words
A method of preparing diene polymers having a high content of cis-1,4 addition and good green strength and tack comprising polymerizing a 1,3-diene monomer in a hydrocarbon solvent in the presence of a catalytically effective amount of a catalyst composition which comprises: (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, alcohols or mixtures thereof; hydrogen fluoride; hydrogen fluoride complexes with ethers, alcohols or mixtures thereof and mixtures of said compounds.
Claim 2
Independent Claim
146 words
A method of preparing diene polymers having a high content of cis-1,4 addition and good green strength and tack comprising polymerizing a 1,3-diene monomer in a hydrocarbon solvent in the presence of a catalytically effective amount of a catalyst composition which comprises: (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, alcohols or mixtures thereof; hydrogen fluoride; hydrogen fluoride complexes with ethers, alcohols or mixtures thereof and mixtures of said compounds.
Claim 3
Dependent Claim
25 words
The method of claim 1 wherein said diene polymer is a polybutadiene polymer having a cis-1,4 addition content of from about 90 to about 99%.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein said hydrocarbon solvent is an aliphatic, cycloaliphatic or aromatic hydrocarbon solvent.
Claim 5
Dependent Claim
11 words
The method of claim 1 wherein said hydrocarbon solvent is hexane.
Claim 6
Dependent Claim
23 words
The method of claim 1 wherein said 1,3-diene monomer is polymerized at a temperature of from about -10° C. to about 150° C.
Claim 7
Dependent Claim
22 words
The method of claim 1 wherein said 1,3-diene monomer is polymerized at a temperature from about 50° C. to about 130° C.
Claim 8
Dependent Claim
42 words
The method of claim 1 wherein said carboxylated metal oxy borate compound is a compound represented by the formula (RCOOMO) 3 B in which R is an alkyl radical containing from 7 to 11 carbon atoms and M is cobalt or nickel.
Claim 9
Dependent Claim
22 words
The method of claim 1 wherein said organometallic compound is selected from the group consisting of organoaluminum, organolithium, organomagnesium, and organozinc compounds.
Claim 10
Dependent Claim
12 words
The method of claim 1 wherein said organometallic compound is triisobutyl aluminum.
Claim 11
Dependent Claim
12 words
The method of claim 1 wherein said organometallic compound is n-butyl lithium.
Claim 12
Dependent Claim
53 words
The method 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 13
Dependent Claim
16 words
The method of claim 9 wherein said boron trifluoride ether complex is boron trifluoride diethyl ether.
Claim 14
Dependent Claim
40 words
The method of claim 6 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 15
Dependent Claim
21 words
The method of claim 1 wherein said boron trifluoride alcohol complex is a boron trifluoride-ethanol complex or a boron trifluoride-octanol complex.
Claim 16
Dependent Claim
23 words
The method 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 17
Dependent Claim
17 words
The method of claim 1 wherein the molar ratio of components a:b:c ranges from 1:1.5:1.5 to 1:15:15.
References Cited (Backward Citations)
US3170904A
Cited
US3170907A
Cited
US3170905A
Cited
US3471462A
Cited
US3464965A
Cited
US3528957A
Cited
US3483177A
Cited
US3487063A
Cited
US3674759A
Cited
US3769270A
Cited
US3725492A
Cited
US3856764A
Cited
US3910869A
Cited
GB1499638A
Cited
US3985941A
Cited
US4304885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-10 | 1988-12-10 | 1989-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-10 | 1992-12-10 | 1993-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-10 | 1996-12-10 | 1997-06-11 | $7700.00 | Window Closed / Lapsed |