Patent US4495317A successfully refreshed from Google Patents.
US4495317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warer reducible epoxy coating composition
Assignee: Deft Chemical Coatings Inc
•
Filing: 1982-05-07
•
Granted: 1985-01-22
•
Expires: 2002-05-07
Abstract
Abstract A homogeneous, water-reducible coating composition comprises a modified polyamine resin homogeneously reduced in an aqueous system comprising water and a low-molecular weight nitroparaffin. An epoxy resin can be added to the coating composition to form a stable emulsion.
Inventors
- 👤 Richard A. Albers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:26
CPC Classifications
C; C09; C09D; C09D179/00; C09D179/04; C08; C08G; C08G59/00; C08G59/18; C08G59/182; C08G59/184; C08G59/40; C08G59/50; C09D163/00; C09D177/00; C09D179/02
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
146 words
A homogeneous water-reducible coating composition comprising epoxy resin and sufficient modified polyamine resin to cure the epoxy resin, the modified polyamine resin being a polyamide-epoxy adduct formed by reacting a poly-amino-imidazoline and diglycidyl ether of bisphenol A, the modified polyamine resin being homogeneously reduced in an aqueous system comprising nitroparaffin in an amount of at least 2% by weight of the modified polyamine resin and water in an amount of at least 50% by weight of the modified polyamine resin, the composition containing substantially no emulsifier, the nitroparaffin having the formula C n X 2n+2 where n is an integer from 1 to 4 and each X is independently selected from the group consisting of chlorine, hydrogen, and NO 2 , where at least one but no more than two X's are NO 2 , the modified polyamine resin being inherently insoluble and non-dispersible in water.
Claim 2
Dependent Claim
146 words
A homogeneous water-reducible coating composition comprising epoxy resin and sufficient modified polyamine resin to cure the epoxy resin, the modified polyamine resin being a polyamide-epoxy adduct formed by reacting a poly-amino-imidazoline and diglycidyl ether of bisphenol A, the modified polyamine resin being homogeneously reduced in an aqueous system comprising nitroparaffin in an amount of at least 2% by weight of the modified polyamine resin and water in an amount of at least 50% by weight of the modified polyamine resin, the composition containing substantially no emulsifier, the nitroparaffin having the formula C n X 2n+2 where n is an integer from 1 to 4 and each X is independently selected from the group consisting of chlorine, hydrogen, and NO 2 , where at least one but no more than two X's are NO 2 , the modified polyamine resin being inherently insoluble and non-dispersible in water.
Claim 3
Dependent Claim
25 words
The composition of claim 1 in which the nitroparaffin is selected from the group consisting of nitromethane, nitroethane, 1-nitropropane, 2-nitropropane, 1-nitrobutane, 2-nitrobutane, and combinations thereof.
Claim 4
Dependent Claim
11 words
The composition of claim 2 in which the nitroparaffin is 2-nitropropane.
Claim 5
Dependent Claim
20 words
The composition of claim 1 in which the modified polyamine resin is inherently incapable of being homogeneously reduced by water.
Claim 6
Dependent Claim
22 words
The composition of claim 1 comprising the nitroparaffin in an amount of up to 50% by weight of the modified polyamine resin.
Claim 7
Dependent Claim
25 words
The composition of claim 1 comprising the nitroparaffin in an amount of from about 15 to about 25% by weight of the modified polyamine resin.
Claim 8
Dependent Claim
20 words
The composition of claim 1 in which the modified polyamine resin has an amine value of less than about 400.
Claim 9
Dependent Claim
19 words
The composition of claim 1 having a volatile or anic content of no more than 450 grams per liter.
Claim 10
Dependent Claim
13 words
The composition of claim 8 including an organic solvent for the epoxy resin.
Claim 11
Dependent Claim
14 words
The composition of claim 8 including an organic solvent for the modified polyamine resin.
Claim 12
Dependent Claim
143 words
A homogeneous, water-reduced coating composition comprising: (a) epoxy resin; (b) sufficient moified polyamine resin to cure the epoxy resin, wherein the modified polyamine resin (i) is a polyamide-epoxy adduct formed by reacting a poly-amine-imidazoline and diglycidyl ether of bisphenol A, (ii) has an amine value of less than about 400, and (iii) is inherently incapable of being reduced, dissolved, or dispersed by water; and (c) an aqueous system in which the modified polyamine resin is homogeneously reduced, the aqueous system comprising an organic solvent for the modified polyamine resin, nitroethane in an amount of from about 15% to about 25% by weight of the modified polyamine resin, and water in an amount of at least 50% by weight of the modified polyamine resin, the composition containing substantially no emulsifier and having a volatile organic content of no more than 450 grams per liter.
Claim 13
Dependent Claim
143 words
A homogeneous, water-reduced coating composition comprising: (a) epoxy resin; (b) sufficient moified polyamine resin to cure the epoxy resin, wherein the modified polyamine resin (i) is a polyamide-epoxy adduct formed by reacting a poly-amine-imidazoline and diglycidyl ether of bisphenol A, (ii) has an amine value of less than about 400, and (iii) is inherently incapable of being reduced, dissolved, or dispersed by water; and (c) an aqueous system in which the modified polyamine resin is homogeneously reduced, the aqueous system comprising an organic solvent for the modified polyamine resin, nitroethane in an amount of from about 15% to about 25% by weight of the modified polyamine resin, and water in an amount of at least 50% by weight of the modified polyamine resin, the composition containing substantially no emulsifier and having a volatile organic content of no more than 450 grams per liter.
Claim 14
Dependent Claim
143 words
A composition for forming a coating, the composition comprising (a) epoxy resin, (b) nitroparaffin, the nitroparaffin having the formula C n X 2n+2 where n is an integer from 1 to 4 and each X is independently selected from the group consisting of chlorine, hydrogen, and NO 2 , where at least one but no more than two X's are NO 2 , and (c) sufficient modified polyamine resin to cure the epoxy resin, the nitroparaffin being present in the composition in an amount sufficient that the modified polyamine resin is homogeneously reduced by an aqueous system comprising water in an amount of at least 50% by weight of the modified polyamine resin, the composition containing substantially no emulsifier and having a volatile organic content of less than 450 grams per liter, the modified polyamine resin being inherently insoluble and non-dispersible in water.
Claim 15
Dependent Claim
143 words
A composition for forming a coating, the composition comprising (a) epoxy resin, (b) nitroparaffin, the nitroparaffin having the formula C n X 2n+2 where n is an integer from 1 to 4 and each X is independently selected from the group consisting of chlorine, hydrogen, and NO 2 , where at least one but no more than two X's are NO 2 , and (c) sufficient modified polyamine resin to cure the epoxy resin, the nitroparaffin being present in the composition in an amount sufficient that the modified polyamine resin is homogeneously reduced by an aqueous system comprising water in an amount of at least 50% by weight of the modified polyamine resin, the composition containing substantially no emulsifier and having a volatile organic content of less than 450 grams per liter, the modified polyamine resin being inherently insoluble and non-dispersible in water.
Claim 16
Dependent Claim
108 words
A composition for forming a coating, the composition containing substantially no emulsifier and comprising (a) epoxy resin, (b) nitroparaffin selected from the group consisting of nitromethane, nitroethane, 1-nitropropane, 1-nitrobutane, 2-nitrobutane, and combinations thereof, and (c) sufficient modified polyamine resin to cure the epoxy resin, the nitroparaffin being present in the composition in an amount sufficient that the modified polyamine resin is homogeneously dispersed in an aqueous system comprising water in an amount of at least 50% by weight of the modified polyamine resin, the composition having a volatile organic content of less than 450 grams per liter, the modified polyamine resin being inherently insoluble and non-dispersible in water.
Claim 17
Dependent Claim
108 words
A composition for forming a coating, the composition containing substantially no emulsifier and comprising (a) epoxy resin, (b) nitroparaffin selected from the group consisting of nitromethane, nitroethane, 1-nitropropane, 1-nitrobutane, 2-nitrobutane, and combinations thereof, and (c) sufficient modified polyamine resin to cure the epoxy resin, the nitroparaffin being present in the composition in an amount sufficient that the modified polyamine resin is homogeneously dispersed in an aqueous system comprising water in an amount of at least 50% by weight of the modified polyamine resin, the composition having a volatile organic content of less than 450 grams per liter, the modified polyamine resin being inherently insoluble and non-dispersible in water.
Claim 18
Dependent Claim
25 words
The composition of claim 12 in which the nitroparaffin is selected from the group consisting of nitromethane, nitroethane, 1-nitropropane, 2-nitropropane, 1-nitrobutane, 2-nitrobutane, and combinations thereof.
Claim 19
Dependent Claim
11 words
The composition of claim 13 in which the nitroparaffin is 2-nitropropane.
Claim 20
Dependent Claim
13 words
The composition of claim 12 or 13 in which the nitroparaffin is nitroethane.
Claim 21
Dependent Claim
13 words
The composition of claim 12 including an organic solvent for the epoxy resin.
Claim 22
Dependent Claim
13 words
The composition of claim 12 including an organic solvent for the epoxy resin.
Claim 23
Dependent Claim
22 words
The composition of claims 12, 13, 17 or 18 having a volatile organic content of no more than 350 grams per liter.
Claim 24
Dependent Claim
140 words
A homogeneous composition comprising modified polyamine resin curing agent for epoxy resins, the modified polyamine resin being a polyamide-epoxy adduct formed by reacting a poly-amino-imidazoline and diglycidyl ether of bisphenol A, the modified polyamine resin being homogeneously reduced in an aqueous system comprising water in an amount of at least 50% by weight of the modified polyamine resin and nitroparaffin in an amount of at least 2% by weight of the modified polyamine resin, the composition containing substantially no emulsifier, the nitroparaffin having the formula C n X 2n+2 where n is an integer from 1 to 4 and each X is independently selected from the group consisting of chlorine, hydrogen, and NO 2 , where at least one but no more than two X's are NO 2 , the modified polyamine resin being inherently insoluble and non-dispersible in water.
Claim 25
Dependent Claim
140 words
A homogeneous composition comprising modified polyamine resin curing agent for epoxy resins, the modified polyamine resin being a polyamide-epoxy adduct formed by reacting a poly-amino-imidazoline and diglycidyl ether of bisphenol A, the modified polyamine resin being homogeneously reduced in an aqueous system comprising water in an amount of at least 50% by weight of the modified polyamine resin and nitroparaffin in an amount of at least 2% by weight of the modified polyamine resin, the composition containing substantially no emulsifier, the nitroparaffin having the formula C n X 2n+2 where n is an integer from 1 to 4 and each X is independently selected from the group consisting of chlorine, hydrogen, and NO 2 , where at least one but no more than two X's are NO 2 , the modified polyamine resin being inherently insoluble and non-dispersible in water.
Claim 26
Dependent Claim
27 words
The composition of claim 20 or 30 in which the nitroparaffin is selected from the group consisting of nitromethane, nitroethane, 1-nitropropane, 2-nitropropane, 1-nitrobutane, 2-nitrobutane, and combinations thereof.
Claim 27
Dependent Claim
14 words
The composition of claims 1, 20 or 21 in which the nitroparaffin is nitroethane.
Claim 28
Dependent Claim
22 words
The composition of claim 20 or 21 in which the modified polyamine resin is inherently incapable of being homogeneously reduced by water.
Claim 29
Dependent Claim
24 words
The composition of claim 20 or 21 comprising the nitroparaffin in an amount of up to 50% by weight of a modified polyamine resin.
Claim 30
Dependent Claim
22 words
The composition of claim 20 or 21 in which the modified polyamine resin has an amine value of less than about 400.
Claim 31
Dependent Claim
15 words
The composition of claim 20 or 21 including an organic solvent for the polyamine resin.
Claim 32
Dependent Claim
20 words
The composition of claim 20 or 21 having a volatile organic content of no more than 450 grams per liter.
Claim 33
Dependent Claim
24 words
The composition of claim 20 or 21 including epoxy resin in an amount about stoichiometric to the amount of polyamide resin in the composition.
Claim 34
Dependent Claim
127 words
A homogeneous composition comprising modified polyamine resin having an amine value of less than about 400 homogeneously reduced in an aqueous system comprising (i) water in an amount of at least 50% by weight of the modified polyamine resin, (ii) nitroethane in an amount of from about 15 to about 25% by weight of the modified polyamine resin, and (iii) an organic solvent for the modified polyamine resin, the composition containing substantially no emulsifier wherein the modified polyamine resin is inherently incapable of being homogeneously reduced, dissolved, or dispersed by water, and the composition has a volatile organic content of no more than about 450 grams per liter, the modified polyamine resin being a polyamide-epoxy adduct formed by reacting a poly-amino-imidazoline and diglycydl ether of bisphenol A.
Claim 35
Dependent Claim
127 words
A homogeneous composition comprising modified polyamine resin having an amine value of less than about 400 homogeneously reduced in an aqueous system comprising (i) water in an amount of at least 50% by weight of the modified polyamine resin, (ii) nitroethane in an amount of from about 15 to about 25% by weight of the modified polyamine resin, and (iii) an organic solvent for the modified polyamine resin, the composition containing substantially no emulsifier wherein the modified polyamine resin is inherently incapable of being homogeneously reduced, dissolved, or dispersed by water, and the composition has a volatile organic content of no more than about 450 grams per liter, the modified polyamine resin being a polyamide-epoxy adduct formed by reacting a poly-amino-imidazoline and diglycydl ether of bisphenol A.
Claim 36
Dependent Claim
143 words
A homogeneous, water-reducible composition comprising modified polyamine resin curing agent for epoxy resins and nitroparaffin in an amount sufficient that the modified polyamine resin can be homogeneously reduced by water in an amount of at least 50% by weight of the modified polyamine resin, the modified polyamine resin being a polyamide epoxy adduct formed by reacting a poly-amino-imidazoline and diglycidyl ether of bisphenol A, the composition containing substantially no emulsifier and having a volatile organic content of less than 450 grams per liter, the modified polyamine resin being inherently insoluble and non-dispersible in water, the nitroparaffin having the formula C n X 2n+2 where an is an integer from 1 to 4 and each X is independently selected from the group consisting of chlorine, hydrogen, and NO 2 , where at least one but no more than two X's are NO 2 .
Claim 37
Dependent Claim
143 words
A homogeneous, water-reducible composition comprising modified polyamine resin curing agent for epoxy resins and nitroparaffin in an amount sufficient that the modified polyamine resin can be homogeneously reduced by water in an amount of at least 50% by weight of the modified polyamine resin, the modified polyamine resin being a polyamide epoxy adduct formed by reacting a poly-amino-imidazoline and diglycidyl ether of bisphenol A, the composition containing substantially no emulsifier and having a volatile organic content of less than 450 grams per liter, the modified polyamine resin being inherently insoluble and non-dispersible in water, the nitroparaffin having the formula C n X 2n+2 where an is an integer from 1 to 4 and each X is independently selected from the group consisting of chlorine, hydrogen, and NO 2 , where at least one but no more than two X's are NO 2 .
Claim 38
Dependent Claim
22 words
The composition of claim 12 or 13 in which the modified polyamine resin is inherently incapable of being homogeneously reduced by water.
References Cited (Backward Citations)
US3099632A
Cited
US3474056A
Cited
US3192248A
Cited
US4066625A
Cited
US3723332A
Cited
US3970621A
Cited
US4076676A
Cited
US4120839A
Cited
US4159976A
Cited
US4182831A
Cited
US4179440A
Cited
JPS5578013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |