US3876604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curing with dispersed complexes of selected diamines and alkali salts
Assignee: Uniroyal Chemical Co Inc
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Filing: 1973-08-13
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Granted: 1975-04-08
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Expires: 1993-08-13
Abstract
Abstract Amine-curable polymers are cured effectively by using a dispersion of complexes of 4,4''-methylene dianiline and/or racemic 2,3-di (4-aminophenyl) butane and selected alkali metal salts including sodium chloride. The particle size within the dispersion is such that at least about 90% of the particles have a diameter of no more than about 60 microns and preferably no more than about 30. The vehicle for the dispersion is an inert organic liquid preferably, di(2-ethylhexyl)phthalate.
Inventors
- 👤 Paul P Caruso
- 👤 John J Verbanc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:06
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
172 words
A PROCESS FOR CURING AN AMINE-CURABLE POLYMER OR PREPOLYMER WHICH COMPRISES COMMINGLING SAID POLYMER WITH A DISPERSION OF A CURING AGENT IN AN INERT CARRIER LIQUID, SAID CURING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF (A) A COMPLEX OF 4,4''-METHYLENEDIANILINE AND A SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM CHLORIDE, SODIUM BROMIDE, SODIUM IODIDE, SODIUM NITRITE LITHIUM CHLORIDE, LITHIUM BROMIDE, LITHIUM IODIDE, LITHIUM NITRITE AND SODIUM CYANIDE, AND (B) A COMPLEX OF RACEMIC 2,3-DI(4-AMINOPHENYL)BUTANE WITH A SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM CHLORIDE, SODIUM BROMIDE, SODIUM IODIDE, POTASSIUM CHLORIDE, POTASSIUM BROMIDE, POTASSIUM IODIDE, RUBIDIUM CHLORIDE, RUBIDIUM BROMIDE, RUBIDIUM IODIDE, CESIUM CHLORIDE, CESIUM BROMIDE, AND CESIUM IODIDE; THE RATIO OF SAID DIANILINE OR SAID RACEMIC 2,3-DI(4-AMINOPHENYL)BUTANE TO SAID SALT IN SAID COMPLEX BEING 3 MOLES TO 1 MOLE; THE RESULTING DISPERSION CONTAINING UP TO 75 WT., % OF SAID COMPLEX, AND AT LEAST 90% OF SAID PARTICLES OF COMPLEX BEING LESS THAN ABOUT 60 MICRONS IN DIAMETER, AND SUBJECTING THE COMMINGLED POLYMER OR PREPOLYMER AND DISPERSION TO CURING CONDITIONS.
Claim 2
Dependent Claim
172 words
A PROCESS FOR CURING AN AMINE-CURABLE POLYMER OR PREPOLYMER WHICH COMPRISES COMMINGLING SAID POLYMER WITH A DISPERSION OF A CURING AGENT IN AN INERT CARRIER LIQUID, SAID CURING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF (A) A COMPLEX OF 4,4''-METHYLENEDIANILINE AND A SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM CHLORIDE, SODIUM BROMIDE, SODIUM IODIDE, SODIUM NITRITE LITHIUM CHLORIDE, LITHIUM BROMIDE, LITHIUM IODIDE, LITHIUM NITRITE AND SODIUM CYANIDE, AND (B) A COMPLEX OF RACEMIC 2,3-DI(4-AMINOPHENYL)BUTANE WITH A SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM CHLORIDE, SODIUM BROMIDE, SODIUM IODIDE, POTASSIUM CHLORIDE, POTASSIUM BROMIDE, POTASSIUM IODIDE, RUBIDIUM CHLORIDE, RUBIDIUM BROMIDE, RUBIDIUM IODIDE, CESIUM CHLORIDE, CESIUM BROMIDE, AND CESIUM IODIDE; THE RATIO OF SAID DIANILINE OR SAID RACEMIC 2,3-DI(4-AMINOPHENYL)BUTANE TO SAID SALT IN SAID COMPLEX BEING 3 MOLES TO 1 MOLE; THE RESULTING DISPERSION CONTAINING UP TO 75 WT., % OF SAID COMPLEX, AND AT LEAST 90% OF SAID PARTICLES OF COMPLEX BEING LESS THAN ABOUT 60 MICRONS IN DIAMETER, AND SUBJECTING THE COMMINGLED POLYMER OR PREPOLYMER AND DISPERSION TO CURING CONDITIONS.
Claim 3
Dependent Claim
41 words
The process of claim 1 wherein said curing agent is a complex of 4,4''-methylenedianiline and a salt selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, sodium nitrite, lithium chloride, lithium bromide, lithium iodide, lithium nitrite and sodium
Claim 4
Dependent Claim
13 words
The process of claim 2 wherein said prepolymer or polymer is a urethane
Claim 5
Dependent Claim
13 words
The process of claim 3 wherein said curing takes place at a temperature
Claim 6
Dependent Claim
10 words
The process of claim 1 wherein said liquid is di(2-ethylhexyl)
Claim 7
Dependent Claim
13 words
The process of claim 1 wherein said liquid is an aromatic process oil.
Claim 8
Dependent Claim
11 words
The process of claim 1 wherein said liquid is tetraethylene glycol
Claim 9
Dependent Claim
13 words
The process of claim 1 wherein said curing agent is a complex of
Claim 10
Dependent Claim
12 words
The process of claim 1 wherein said dispersion contains a surface active
Claim 11
Dependent Claim
136 words
A composition of matter comprising a mixture of particles of a complex dispersed in an inert liquid carrier, the resulting dispersion containing up to 75 wt. % of complex, said complex being selected from the group consisting of a) racemic 2,3-di(4-aminophenyl)butane and a salt selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, potassium chloride, potassium bromide, potassium iodide, rubidium chloride, rubidium bromide, rubidium iodide, cesium chloride, cesium bromide and cesium iodide, and b) 4,4''-methylenedianiline and a salt selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, sodium nitrite, lithium chloride, lithium bromide, lithium iodide, lithium nitrite and sodium cyanide; the ratio of said dianiline and said racemic 2,3-di(4-aminophenyl) butane to said salt in said complexes being 3 moles to 1 mole, and at least 90% of said particles of
Claim 12
Dependent Claim
136 words
A composition of matter comprising a mixture of particles of a complex dispersed in an inert liquid carrier, the resulting dispersion containing up to 75 wt. % of complex, said complex being selected from the group consisting of a) racemic 2,3-di(4-aminophenyl)butane and a salt selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, potassium chloride, potassium bromide, potassium iodide, rubidium chloride, rubidium bromide, rubidium iodide, cesium chloride, cesium bromide and cesium iodide, and b) 4,4''-methylenedianiline and a salt selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, sodium nitrite, lithium chloride, lithium bromide, lithium iodide, lithium nitrite and sodium cyanide; the ratio of said dianiline and said racemic 2,3-di(4-aminophenyl) butane to said salt in said complexes being 3 moles to 1 mole, and at least 90% of said particles of
Claim 13
Dependent Claim
37 words
The composition of claim 10 wherein said complex comprises 4,4''-methylenedianiline and a salt selected from the group consisting of sodium chloride, sodium bromide, sodium iodide, sodium nitrite, lithium chloride, lithium bromide, lithium iodide, lithium nitrite and sodium
Claim 14
Dependent Claim
13 words
The composition of claim 10 wherein at least 90% of said particles of
Claim 15
Dependent Claim
13 words
The composition of claim 10 wherein at least 90% of said particles of
Claim 16
Dependent Claim
9 words
The composition of claim 10 wherein said liquid is
Claim 17
Dependent Claim
11 words
The composition of claim 10 wherein said liquid is tetraethylene glycol
Claim 18
Dependent Claim
46 words
The composition of claim 10 wherein said inert liquid is selected from the group consisting of (a) esters of phthalic acid, isophthalic acid and aliphatic diacids, (b) aromatic and naphthenic hydrocarbon processing oils, (c) halogenated biphenyls, (d) liquid aromatic sulfonamides and (e) tetra ethylene glycol bis(2-ethylhexanoate).
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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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |