Patent US4004062A successfully refreshed from Google Patents.
US4004062A
Expired / Lapsed
US
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Aqueous polyester coating composition
Assignee: General Electric Co
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Filing: 1974-08-30
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Granted: 1977-01-18
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Expires: 1994-08-30
Abstract
Abstract An aqueous coating composition containing in admixture a water soluble polyester, a water soluble orthoamic acid diamine and minor amounts of other water soluble polymeric coating materials. The water soluble orthoamic acid diamine is prepared by reacting in a suitable solvent for at least one reactant, an aromatic diamine and an aromatic dianhydride with the reactants in the molar ratio of m/(m-1) respectively, where m has a value between 2 and about 7. The diamine is dissolved in a solvent and the dianhydride is slowly added to the solution to form the orthoamic acid diamine. The reaction is carried out at a temperature below that at which imidization occurs. The reaction product may then be made water soluble by the addition of a volatile base such as ammonia or a volatile amine. Water solutions of polyester resins and the orthoamic acid diamine are utilized to produce coatings on substrates such as magnet wire. Water soluble phenol-formaldehyde resins, aminoplasts, epoxy resins and the like, and accelerators and other ingredients may be added to the coating solution. Coatings produced on substrates, including magnet wire, may be heat cured to form clear, tough, flexible, adherent solvent resistant dielectric thermally stable coatings.
Inventors
- 👤 Marvin A. Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:45
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1067; C08G73/1046; C08G73/1057; C08G73/1064; C08G73/1071; C08G73/1075; C08G73/1082; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01B3/421; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
32 words
A coating composition for application to a substrate from an aqueous solution comprising the admixture of a water soluble film forming polyester resin and a water soluble aromatic oligorthoamic acid di-primary amine.
Claim 2
Dependent Claim
32 words
A coating composition for application to a substrate from an aqueous solution comprising the admixture of a water soluble film forming polyester resin and a water soluble aromatic oligorthoamic acid di-primary amine.
Claim 3
Dependent Claim
80 words
An aqueous base resin coating composition comprising, the admixture of a water soluble film forming polyester resin and a water soluble aromatic digorthoamic acid di-primary amine in the weight ratio of between about 0.1 and 10 parts polyester per part of diamine, said composition having a solids content of between about 25% and 40% by weight, a coating of said composition on a substrate being curable upon the application of heat to form a cured resin coating on said substrate.
Claim 4
Dependent Claim
80 words
An aqueous base resin coating composition comprising, the admixture of a water soluble film forming polyester resin and a water soluble aromatic digorthoamic acid di-primary amine in the weight ratio of between about 0.1 and 10 parts polyester per part of diamine, said composition having a solids content of between about 25% and 40% by weight, a coating of said composition on a substrate being curable upon the application of heat to form a cured resin coating on said substrate.
Claim 5
Dependent Claim
72 words
A coating composition for application to a substrate from an aqueous solution comprising the admixture of between about 1 and about 10 parts by weight of a water soluble film forming polyester resin, and between about 1 and about 10 parts by weight of a water soluble aromatic oligorthoamic acid di-primary amine, a coating of said composition on a substrate being heat curable to form a cured resin coating on said substrate.
Claim 6
Dependent Claim
72 words
A coating composition for application to a substrate from an aqueous solution comprising the admixture of between about 1 and about 10 parts by weight of a water soluble film forming polyester resin, and between about 1 and about 10 parts by weight of a water soluble aromatic oligorthoamic acid di-primary amine, a coating of said composition on a substrate being heat curable to form a cured resin coating on said substrate.
Claim 7
Dependent Claim
24 words
The coating composition defined in claim 3 wherein the admixture includes up to about 10 parts by weight of a water soluble phenol-formaldehyde resin.
Claim 8
Dependent Claim
25 words
The coating composition defined in claim 3 wherein the admixture further includes up to about 10 parts by weight of a water soluble epoxy resin.
Claim 9
Dependent Claim
25 words
THe coating composition defined in claim 3 wherein the admixture further includes up to about 10 parts by weight of a water soluble aminoplast resin.
Claim 10
Dependent Claim
33 words
The coating composition defined in claim 3 wherein said aromatic oligorthoamic acid di-primary amine is the reaction product of an aromatic diamine and an aromatic dianhydride in the molar ratio of two-to-one respectively.
Claim 11
Dependent Claim
19 words
The coating composition defined in claim 3 wherein said aromatic oligorthoamic acid di-primary amine is a diamide diacid diamine.
Claim 12
Dependent Claim
72 words
The coating composition defined in claim 3 wherein said water soluble aromatic oligorthoamic acid di-primary amine comprises the reaction product of an aromatic diamine and an aromatic dianhydride, in the molar ratio of m to m-1) respectively, where m has a value of from 2 to about 7, with the addition to said reaction product of a volatile nitrogen containing base in an amount sufficient to make the reaction product water soluble.
Claim 13
Dependent Claim
46 words
The coating composition defined in claim 3 wherein said aromatic oligorthoamic acid di-primary amine is the reaction product of an aromatic diamine and an aromatic dianhydride in the molar ratio of m to (m-1) respectively, where m has a value of from 2 to about 7.
Claim 14
Dependent Claim
111 words
The coating composition defined in claim 10 wherein said aromatic diamine is selected from the group consisting of: aromatic diamines having the general formula: H.sub.2 N-R'-NH.sub.2 wherein R' is a divalent radical selected from the group consisting of ##STR15##wherein R'" is an aryl group and "" is an alkyl or an aryl group having 1 to 6 carbon atoms, n is an integer of from 1 to 4 and m has a value of 0, 1 or more and ##STR16##wherein R" is selected from the group consisting of an alkylene chain having 1-3 carbon atoms, ##STR17##wherein R'" and R"" are as above-defined and x is an integer of at least 0.
Claim 15
Dependent Claim
37 words
The coating composition defined in claim 10 wherein said aromatic diamine is selected from the group consisting of p,p'-methylenedianiline p,p'-oxydianiline and m-phenylenediamine; and said aromatic dianhydride is selected from the group consisting of 3,3',4,4'-benzophenonetetracarboxylic dianhydride, and 4,4'-(2-acetoxy-1,3-glyceryl)-bis-anhydrotrimellitate.
Claim 16
Dependent Claim
63 words
The coating composition defined in claim 3 wherein said water soluble film forming polyester comprises the reaction product of an aromatic acid or anhydride selected from the group consisting of trimellitic anhydride, trimellitic acid, terephthalic acid, isophthalic acid and mixtures thereof, and a polyhydroxyl selected from the group consisting of neopentyl glycol, propylene glycol, butylene 1,3-glycol, diethylene glycol, glycerine, trishydroxyethylisocyanurate, and mixtures thereof.
Claim 17
Dependent Claim
20 words
The coating composition defined in claim 13 wherein said water soluble film forming polyester further includes an aliphatic dibasic acid.
Claim 18
Dependent Claim
26 words
A substrate having a coating thereon produced by applying thereof a film of the composition defined in claim 3 followed by heat curing of the film.
Claim 19
Dependent Claim
27 words
A metal wire having a coating thereon produced by applying thereto a film of the composition defined in claim 3 followed by heat curing of the film.
Claim 20
Dependent Claim
27 words
A process for coating a substrate comprising the steps of applying to said substrate a coating of the composition defined in claim 3 and curing said coating.
Claim 21
Dependent Claim
27 words
A process for producing magnet wire comprising the steps of applying to a wire a coating of the composition defined in claim 13 and curing said coating.
Claim 22
Dependent Claim
36 words
A metal wire having a coating thereon produced by applying thereto a film of the composition defined in claim 3 followed by heat curing of the film and with a Nylon overcoating over said cured coating.
Claim 23
Dependent Claim
35 words
A process for producing magnet wire comprising the steps of applying to a wire a coating of the composition defined in claim 13, curing said coating, and applying a Nylon overcoating onto said cured coating.
Claim 24
Dependent Claim
14 words
The coating composition defined in claim 9 including the addition of an organometallic accelerator.
Claim 25
Dependent Claim
19 words
The composition of claim 21 wherein said organometallic accelerator is selected from the group consisting of the titanium chelates.
Claim 26
Dependent Claim
16 words
The coating composition defined in claim 9 including the addition thereto of a flow control agent.
Claim 27
Dependent Claim
36 words
The composition of claim 23 wherein said flow control agent is selected from the group consisting of fluorocarbon surfactants, carboxypropyl terminated dimethylsiloxane polymer flow agents, nonylphenoxypoly(ethyleneoxy)ethanol. and a mixture of cresylic acidphenol blend with n-butyl alcohol.
Claim 28
Dependent Claim
27 words
A process for coating a substrate comprising the steps of applying to said substrate a coating of the composition defined in claim 21 and curing said coating.
Claim 29
Dependent Claim
27 words
A process for coating a substrate comprising the steps of applying to said substrate a coating of the composition defined in claim 24 and curing said coating.
Claim 30
Dependent Claim
23 words
A process for coating a substrate as defined in claim 26 including the step of applying a Nylon overcoating to the cured coating.
Claim 31
Dependent Claim
32 words
A process for producing magnet wire comprising applying to a wire a coating of the composition defined in claim 12, curing said coating, and applying a Nylon overcoating to said cured coating.
Claim 32
Dependent Claim
19 words
The coating composition of claim 12 including the addition of a flow control agent and an organometallic curing accelerator.
Claim 33
Dependent Claim
35 words
A process for producing magnet wire comprising the steps of applying to a wire a coating of the composition defined in claim 29, curing said coating, and applying a Nylon overcoating to said cured coating.
Claim 34
Dependent Claim
27 words
Magnet wire comprising a wire substrate having a coating thereon produced by the application and cure thereon of a coating of the composition defined in claim 29.
Claim 35
Dependent Claim
11 words
Magnet wire as defined in claim 31, including a Nylon overcoating.
Claim 36
Dependent Claim
138 words
A coating composition for application to a substrate from an aqueous solution comprising the admixture of between about 1 and about 10 parts by weight of a water soluble polyester resin having an acid value of from about 45 to about 80 and a hydroxyl value of about 100 to about 200; and between about 1 and about 10 parts by weight of a water soluble aromatic orthoamic acid diamine reaction product of an aromatic diamine and an aromatic dianhydride in the molar ratio of m to (m-1) respectively, where m has a value of from 2 to about 7; said admixture having an aromatic to aliphatic molar ratio of between about 25 and about 50 percent aromatic; a coating of said composition on a substrate being heat curable to form a cured resin coating on said substrate.
Claim 37
Dependent Claim
138 words
A coating composition for application to a substrate from an aqueous solution comprising the admixture of between about 1 and about 10 parts by weight of a water soluble polyester resin having an acid value of from about 45 to about 80 and a hydroxyl value of about 100 to about 200; and between about 1 and about 10 parts by weight of a water soluble aromatic orthoamic acid diamine reaction product of an aromatic diamine and an aromatic dianhydride in the molar ratio of m to (m-1) respectively, where m has a value of from 2 to about 7; said admixture having an aromatic to aliphatic molar ratio of between about 25 and about 50 percent aromatic; a coating of said composition on a substrate being heat curable to form a cured resin coating on said substrate.
Claim 38
Dependent Claim
27 words
A process for coating a substrate comprising the steps of applying to said substrate a coating of the composition defined in claim 33, and curing said coating.
Claim 39
Dependent Claim
34 words
A process for producing magnet wire comprising the steps of applying to a wire a coating composition as defined in claim 33, curing said coating, and applying a Nylon overcoating to said cured coating.
Claim 40
Dependent Claim
27 words
Magnet wire comprising a wire substrate having a coating thereon produced by the application and cure thereon of a coating of the composition defined in claim 33.
Claim 41
Dependent Claim
11 words
Magnet wire as defined in claim 36 including a Nylon overcoating.
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) | 1980-01-18 | 1980-07-19 | 1981-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-18 | 1984-07-19 | 1985-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-18 | 1988-07-19 | 1989-01-18 | $7700.00 | Window Closed / Lapsed |