US3694523A
Expired / Lapsed
US
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Diamine salts of dicarboxylic acids as additives for block polymers
Assignee: Phillips Petroleum Co
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Filing: 1970-01-30
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Granted: 1972-09-26
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Expires: 1990-01-30
Abstract
Abstract The tensile strength of radial or linear block copolymers containing terminal non-elastomeric blocks and central elastomeric blocks is improved by incorporating into the polymer at least one diamine salt of a dicarboxylic acid.
Inventors
- 👤 Kent W Rollmann
- 👤 Harold V Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:14
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
246 words
said elastomeric block is a. a homopolymer of a conjugated diene containing from about four to 12 carbon atoms per molecule, b. a copolymer of two or more conjugated dienes, or c. a copolymer of one or more conjugated dienes with one or more monovinyl-substituted aromatic hydrocarbon monomers which contain at least 50 percent by weight of said diene based on the weight of said elastomeric block; wherein said terminal non-elastomeric blocks comprise from about 20 to 80 percent by weight of the total polymer composition and said elastomeric block comprises from about 80 to 20 percent by weight of the total polymer composition, and wherein each terminal block of said linear block polymer comprises at least 10 weight percent of the total polymer composition; and wherein each of said non-elastomeric polymer block of said radial block polymer comprises at least 5 weight percent of the total polymer composition, and at least one additive in the amount to provide from about 0.5 to 3 parts by weight of said additive per 100 parts by weight of said linEar or radial block polymers, wherein said at least one additive is the salt formed by reacting a primary diamine corresponding to the general formula R(NH2)2, wherein R is an alkylene radical containing from about six to 12 carbon atoms, and a dicarboxylic acid that can be represented by the general formula R''(CO2H)2, wherein R'' is an alkylene or cycloalkylene radical containing from about six to 16 carbon atoms.
Claim 2
Dependent Claim
30 words
The composition of claim 1 wherein said additive is selected from hexamethylene diammonium adipate, hexamethylene diammonium sebacate or hexamethylene diammonium 1,12-dodecanoate; and wherein said polymer is a linear block copolymer.
Claim 3
Dependent Claim
20 words
The composition of claim 2 wherein said linear block copolymer consists essentially of polymerized monomers selected from styrene and 1,3-butadiene.
Claim 4
Dependent Claim
20 words
The composition of claim 1 wherein said block polymer is comprised of polymerized monomers selected from styrene, 1,3-butadiene, and epsilon-caprolactone.
Claim 5
Dependent Claim
37 words
The composition of claim 1 wherein said additive is selected from hexamethylene diammonium adipate, hexamethylene diammonium sebacate or hexamethylene diammonium 1,12-dodecanoate; and wherein said polymer is a radial block copolymer consisting essentially of polymerized 1,3-butadiene and styrene.
Claim 6
Dependent Claim
40 words
The composition of claim 1 wherein said at least one additive is employed in an amount to provide from about 0.1 to 1 parts by weight of said at least one additive per 100 parts by weight of said polymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |