US4141871A
Expired / Lapsed
US
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Aqueous dispersions of polyhydroxy polyether resins as coating compositions for metallic substrates
Assignee: Valspar Corp
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Filing: 1977-08-17
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Granted: 1979-02-27
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Expires: 1997-08-17
Abstract
Abstract Coating compositions are prepared from aqueous dispersions of polyhydroxy polyether resins and aminoplast or phenolplast resins or blocked polyisocyanates containing as a diluent an aqueous emulsion of a water immiscible alcohol. The coating compositions are particularly useful as can coatings.
Inventors
- 👤 David A. Shimp
- 👤 Robert B. Mitzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:49
CPC Classifications
C; C09; C09D; C09D171/00; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/4879; C09D161/00; C09D161/04; C09D161/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31678; Y10T428/31688
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
134 words
In a heat curable coating composition made from an aqueous dispersion of a complex polyhydroxy polyether resin derived from an epihalohydrin and a polyhydric phenol and having a melting point of at least 50° C. in admixture with an aminoplast or phenolplast resin or a blocked polyisocyanate and an anionic or nonionic surfactant or mixture thereof, the improvement which comprises using as a diluent in the dispersion an emulsion of a water immiscible butanol in water plus an anionic or nonionic surfactant or mixture thereof wherein the butanol is present in the amount of about 5 to about 30 weight percent based on the weight of the total volatiles in the coating composition and wherein the coating composition has a surface tension of about 26 to about 28 dynes per centimeter at 25° C.
Claim 2
Dependent Claim
134 words
In a heat curable coating composition made from an aqueous dispersion of a complex polyhydroxy polyether resin derived from an epihalohydrin and a polyhydric phenol and having a melting point of at least 50° C. in admixture with an aminoplast or phenolplast resin or a blocked polyisocyanate and an anionic or nonionic surfactant or mixture thereof, the improvement which comprises using as a diluent in the dispersion an emulsion of a water immiscible butanol in water plus an anionic or nonionic surfactant or mixture thereof wherein the butanol is present in the amount of about 5 to about 30 weight percent based on the weight of the total volatiles in the coating composition and wherein the coating composition has a surface tension of about 26 to about 28 dynes per centimeter at 25° C.
Claim 3
Dependent Claim
34 words
The coating composition of claim 1 wherein the butanol is present in the amount of about 8 to about 22 weight percent based on the weight of the total volatiles in the coating composition.
Claim 4
Dependent Claim
18 words
The coating composition of claim 1 wherein the solids content is about 20 to about 45 weight percent.
Claim 5
Dependent Claim
11 words
The coating composition of claim 1 wherein the butanol is n-butanol.
Claim 6
Dependent Claim
32 words
The composition of claim 1 wherein the complex polyhydroxy polyether resin is the reaction product of epichlorohydrin and p,p'-dihydroxydiphenyl propane having a melting point of about 80° C. to about 135° C.
Claim 7
Dependent Claim
32 words
The composition of claim 1 wherein the butanol is incorporated as an emulsion in water having a particle size of less than 50 microns and is stable for at least 10 minutes.
Claim 8
Dependent Claim
111 words
In a process for preparing a heat curable coating composition made from an aqueous dispersion of a complex polyhydroxy polyether resin derived from an epihalohydrin and a polyhydric phenol and having a melting point of at least 50° C. in admixture with an aminoplast or phenolplast resin or a blocked polyisocyanate and an anionic or nonionic surfactant or mixture thereof, the improvement which comprises adding to the dispersion an emulsion in water of a water immiscible butanol and an anionic or nonionic surfactant or mixture thereof wherein the butanol is added in the amount of about 5 to about 30 weight percent based on the total volatiles in the coating composition.
Claim 9
Dependent Claim
111 words
In a process for preparing a heat curable coating composition made from an aqueous dispersion of a complex polyhydroxy polyether resin derived from an epihalohydrin and a polyhydric phenol and having a melting point of at least 50° C. in admixture with an aminoplast or phenolplast resin or a blocked polyisocyanate and an anionic or nonionic surfactant or mixture thereof, the improvement which comprises adding to the dispersion an emulsion in water of a water immiscible butanol and an anionic or nonionic surfactant or mixture thereof wherein the butanol is added in the amount of about 5 to about 30 weight percent based on the total volatiles in the coating composition.
Claim 10
Dependent Claim
33 words
The process of claim 7 wherein the butanol is present in the amount of about 8 to about 22 weight percent based on the weight of the total volatiles in the coating composition.
Claim 11
Dependent Claim
10 words
The process of claim 7 wherein the butanol is n-butanol.
Claim 12
Dependent Claim
32 words
The process of claim 7 wherein the butanol is added as an emulsion in water having a particle size of less than 50 microns and a stability of at least 10 minutes.
Claim 13
Dependent Claim
21 words
The process of claim 7 wherein the solids content of the coating composition is about 20 to about 45 weight percent.
Claim 14
Dependent Claim
32 words
The process of claim 7 wherein the complex polyhydroxy polyether resin is the reaction product of epichlorohydrin and p,p'-dihydroxydiphenyl propane having a melting point of about 80° C. to about 135° C.
References Cited (Backward Citations)
US4043963A
Cited
US4059550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |