US4447586A
Expired / Lapsed
US
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Metal fluoborate catalyzed hindered aromatic amine curing agents for polyepoxide resins
Assignee: Resolution Performance Products LLC
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Filing: 1983-04-11
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Granted: 1984-05-08
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Expires: 2003-04-11
Abstract
Abstract Curable compositions are made from polyepoxide resins and hindered aromatic diamines accelerated with copper fluoborate. Cured products obtained from these compositions are useful in oil well casings, geothermal piping, chemical piping and tankage, filament wound large composites and the like.
Inventors
- 👤 David A. Shimp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:56
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/40; C08G59/50; C08G59/5033
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
92 words
A curing agent for polyepoxide resins comprising a solution of: (a) a sterically hindered aromatic diamine containing two primary amine groups attached directly to carbon atoms in the aromatic nucleus wherein the carbon atoms are not adjacent to each other and wherein each position ortho to each amine group contains an alkyl substituent having one to three carbon atoms; and (b) copper fluoborate ps wherein the copper fluoborate is present in the solution in the amount of about 0.2 to about 5 weight percent based on the weight of (a) and (b).
Claim 2
Dependent Claim
92 words
A curing agent for polyepoxide resins comprising a solution of: (a) a sterically hindered aromatic diamine containing two primary amine groups attached directly to carbon atoms in the aromatic nucleus wherein the carbon atoms are not adjacent to each other and wherein each position ortho to each amine group contains an alkyl substituent having one to three carbon atoms; and (b) copper fluoborate ps wherein the copper fluoborate is present in the solution in the amount of about 0.2 to about 5 weight percent based on the weight of (a) and (b).
Claim 3
Dependent Claim
26 words
The curing agent of claim 1 wherein no more than one position ortho to each amine group in the hindered aromatic amine contains a methyl substituent.
Claim 4
Dependent Claim
24 words
The curing agent of claim 1 wherein at least three positions ortho to the amine groups contain C 2 to C 3 alkyl substituents.
Claim 5
Dependent Claim
24 words
The curing agent of claim 1 wherein the copper fluoborate is an aqueous solution containing about 30 to about 50 weight percent copper fluoborate.
Claim 6
Dependent Claim
11 words
The curing agent of claim 4 wherein the water is removed.
Claim 7
Dependent Claim
23 words
The curing agent of claim 1 wherein the copper fluoborate is present in the amount of about 0.3 to about 3 weight percent.
Claim 8
Dependent Claim
13 words
The curing agent of claim 1 wherein the hindered aromatic amine is diethyltoluenediamine.
Claim 9
Dependent Claim
13 words
The curing agent of claim 1 wherein the hindered aromatic amine is methylenebis(2,6-diisopropylaniline).
Claim 10
Dependent Claim
124 words
A curable composition comprising: (a) a sterically hindered aromatic diamine containing two primary amine groups attached directly to carbon atoms in the aromatic nucleus wherein the carbon atoms are not adjacent to each other and wherein each position ortho to each amine group contains an alkyl substituent having one to three carbon atoms; (b) copper fluoborate; and (c) a polyepoxide resin having more than one terminal 1,2-epoxy groups per molecule, wherein the copper fluoborate is present in the amount of about 0.2 to about 5 weight percent based on the weight of (a) and (b) and wherein the hindered aromatic diamine and the polyepoxide resin are present in the equivalent ratios of about 0.5 to about 1.5 amine hydrogen atoms per 1 epoxy group.
Claim 11
Dependent Claim
124 words
A curable composition comprising: (a) a sterically hindered aromatic diamine containing two primary amine groups attached directly to carbon atoms in the aromatic nucleus wherein the carbon atoms are not adjacent to each other and wherein each position ortho to each amine group contains an alkyl substituent having one to three carbon atoms; (b) copper fluoborate; and (c) a polyepoxide resin having more than one terminal 1,2-epoxy groups per molecule, wherein the copper fluoborate is present in the amount of about 0.2 to about 5 weight percent based on the weight of (a) and (b) and wherein the hindered aromatic diamine and the polyepoxide resin are present in the equivalent ratios of about 0.5 to about 1.5 amine hydrogen atoms per 1 epoxy group.
Claim 12
Dependent Claim
26 words
The curable composition of claim 9 wherein no more than one position ortho to each amine group in the hindered aromatic amine contains a methyl substituent.
Claim 13
Dependent Claim
24 words
The curable composition of claim 9 wherein at least three positions ortho to the amine groups contain C 2 to C 3 alkyl substituents.
Claim 14
Dependent Claim
24 words
The curable composition of claim 9 wherein the copper fluoborate is an aqueous solution containing about 30 to about 50 weight percent copper fluoborate.
Claim 15
Dependent Claim
11 words
The curable composition of claim 12 wherein the water is removed.
Claim 16
Dependent Claim
31 words
The curable composition of claim 9 wherein the copper fluoborate is present in the amount of about 0.3 to about 3 weight percent based on the weight of (a) and (b).
Claim 17
Dependent Claim
13 words
The curable composition of claim 9 wherein the hindered aromatic amine is diethyltoluenediamine.
Claim 18
Dependent Claim
13 words
The curable composition of claim 9 wherein the hindered aromatic amine is methylenebis(2,6-diisopropylaniline).
Claim 19
Dependent Claim
34 words
The curable composition of claim 9 wherein the hindered aromatic diamine and the polyepoxide resin are present in the equivalent ratios of about 0.8 to about 1.2 amine hydrogen atoms per 1 epoxy group.
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) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |