US4530986A
Expired / Lapsed
US
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Elastomeric sulfonate terpolymers and process for forming the sulfonated terpolymers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1983-05-19
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Granted: 1985-07-23
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Expires: 2003-05-19
Abstract
Abstract The present invention relates to a free radical emulsion polymerization process for the formation of substantially gel-free terpolymers of a major portion of a mixture of butadiene and styrene and a minor portion of a sulfonate containing monomer wherein the terpolymers are water insoluble and have about 18 to about 100 meq. of sulfonate groups per 100 grams of polymer.
Inventors
- 👤 Robert A. Weiss
- 👤 Robert D. Lundberg
- 👤 Allen C. Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:37
CPC Classifications
C; C08; C08L; C08L9/00; C08F; C08F236/00; C08F236/02; C08F236/04; Y; Y10; Y10S; Y10S260/00; Y10S260/31
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
155 words
A solid water insoluble elastomeric terpolymer comprising about 13 to about 48 weight percent of styrene, about 55 to 88 weight percent of butadiene and a minor proportion of a metal or amine neutralized sulfonate monomer characterized by the formula: ##STR8## wherein Y is a cation selected from Groups I-A, II-A, I-B and II-B of the Periodic Table or an amine of the formula: ##STR9## where R 1 and R 2 can be aliphatic groups of C 1 to C 12 or hydrogen, said terpolymer being water insoluble, having at least about 20 to about 80 meq. of sulfonate groups per 100 grams of polymer, and having a reduced viscosity as measured in a solvent at a concentration of 10 gm/liter of greater than 0.7 and less than 5.0, wherein said sulfonate groups are affixed to the aromatic rings of said terpolymer said terpolymer not being able to form a latex in an aqueous solution.
Claim 2
Dependent Claim
155 words
A solid water insoluble elastomeric terpolymer comprising about 13 to about 48 weight percent of styrene, about 55 to 88 weight percent of butadiene and a minor proportion of a metal or amine neutralized sulfonate monomer characterized by the formula: ##STR8## wherein Y is a cation selected from Groups I-A, II-A, I-B and II-B of the Periodic Table or an amine of the formula: ##STR9## where R 1 and R 2 can be aliphatic groups of C 1 to C 12 or hydrogen, said terpolymer being water insoluble, having at least about 20 to about 80 meq. of sulfonate groups per 100 grams of polymer, and having a reduced viscosity as measured in a solvent at a concentration of 10 gm/liter of greater than 0.7 and less than 5.0, wherein said sulfonate groups are affixed to the aromatic rings of said terpolymer said terpolymer not being able to form a latex in an aqueous solution.
Claim 3
Dependent Claim
17 words
A terpolymer according to claim 1, wherein said sulfonate containing monomer is a metal neutralized sulfonated styrene.
Claim 4
Dependent Claim
26 words
A solid elastomeric polymer according to claim 1 wherein said terpolymer has about 18 to about 90 meq. of sulfonate groups per 100 grams of polymer.
Claim 5
Dependent Claim
26 words
A solid elastomeric terpolymer according to claim 1, wherein said terpolymer has about 20 to about 80 meq. of sulfonate groups per 100 grams of polymer.
Claim 6
Dependent Claim
146 words
A solid, elastomeric, substantially gel-free thermally stable and oxidatively stable terpolymer comprising about 13 to about 48 weight percent of styrene, about 45 to about 88 weight percent butadiene and a minor proportion of a metal or amine neutralized sulfonate monomer characterized by the formula: ##STR10## wherein Y is a cation selected from Groups I-A, II-A, I-B and II-B of the Periodic Table or an amine of the formula: ##STR11## where R 1 and R 2 can be aliphatic groups of C 1 to C 12 or hydrogen, said terpolymer being water insoluble having at least about 20 to about 80 meq. of sulfonate groups per 100 grams of polymer with a reduced viscosity as measured in a solvent at a concentration of 10 gm/liter of greater than 0.7 and less than 5.0, wherein said sulfonate groups are affixed to the aromatic rings of said terpolymer.
Claim 7
Dependent Claim
146 words
A solid, elastomeric, substantially gel-free thermally stable and oxidatively stable terpolymer comprising about 13 to about 48 weight percent of styrene, about 45 to about 88 weight percent butadiene and a minor proportion of a metal or amine neutralized sulfonate monomer characterized by the formula: ##STR10## wherein Y is a cation selected from Groups I-A, II-A, I-B and II-B of the Periodic Table or an amine of the formula: ##STR11## where R 1 and R 2 can be aliphatic groups of C 1 to C 12 or hydrogen, said terpolymer being water insoluble having at least about 20 to about 80 meq. of sulfonate groups per 100 grams of polymer with a reduced viscosity as measured in a solvent at a concentration of 10 gm/liter of greater than 0.7 and less than 5.0, wherein said sulfonate groups are affixed to the aromatic rings of said terpolymer.
Claim 8
Dependent Claim
16 words
A terpolymer according to claim 5, wherein said sulfonate monomer is a metal neutralized sulfonated styrene.
Claim 9
Dependent Claim
54 words
A terpolymer according to claims 1, 2, 5 or 6 wherein said solvent is selected from the group consisting of tetrahydrofuran, 1,2-ethylene dichloride, toluene, xylene, a mixture of 95 vol. % of toluene and 5 vol. % of methanol, and a mixture of 90 vol. % of hexane and 10 vol. % of isopropanol.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-22 | 1997-01-21 | 1997-07-23 | $7700.00 | Window Closed / Lapsed |