Claims
- 1. A coating composition comprising:
- a principal resin comprising a self-addition epoxide resin-polyamine adduct with pendant alkylphenoxy groups;
- a cross-linker comprising a toluene diisocyanate compound, a blocked isocyanurate of a hexane diisocyanate compound or mixtures thereof;
- a grind resin comprising the reaction product of an aromatic diglycidyl ether, an aromatic diol, an aminopolyalkoxy alcohol, a diamine and an alkylaryl glycidyl ether;
- a plasticizer; and
- pigments selected from a group consisting of inorganic, organometallic and organic compounds.
- 2. A composition according to claim 1, wherein the cross-linker is the reaction product of the isocyanurate of hexane-1,6-diisocyanate and a secondary amine.
- 3. A composition according to claim 2 wherein the secondary amine has from 3 to 6 carbons in each alkyl group.
- 4. A composition according to claim 1, wherein the grind resin is a reaction product of bisphenol A diglycidyl ether, bisphenol A, nonylphenyl glycidyl ether, N,N-dimethyl propylene diamine and 9-amino-3,6-dioxanonan-1-ol.
- 5. A coating composition comprising:
- about 30% to 55% of a principal resin formed by adducting a mixture of an amino alcohol of 4 to 8 carbons and a primary/tertiary diamine with the self-condensate of an alkyl phenol of the formula RC.sub.6 H.sub.4 OH, R being hydrogen or an alkyl of 1 to 18 carbons, and bisphenol A-liquified-bisphenol A diglycidyl ether having a molecular weight of about 350 to 2000;
- about 15% to 30% of a blocked isocyanate cross-linker formed from the isocyanurate of hexane-1,6-diisocyanate and secondary amine having from 3 to 6 carbons in each alkyl group, or a mixture of the blocked isocyanurate recited above with a cross-linker formed from trimethylol propane, toluene diisocyanate and alkyl alcohol of 4 to 12 carbon atoms;
- up to about 20% of a grind resin formed from bisphenol A diglycidyl ether, an aromatic diol, 9-amino-3,6-dioxanonan-1-ol, N,N-dialkyl alkylenediamine of 4 to 12 carbons and nonylphenolmonoglycidyl ether;
- about 3% to 12% of a plasticizer comprising nonylphenoxypolypropoxy alcohol or cresyloxypolypropoxy alcohol; and
- up to about 35% pigments comprising inorganic, organometallic, organic compounds or mixtures thereof;
- the precentage being in weight relative to the total weight of the composition.
- 6. A composition according to claim 5 further comprising up to about 3% of an anti-cratering agent comprising a polymer of alkyl acrylate, styrene, hydroxyalkyl acrylate and dimethylaminoethyl acrylate.
- 7. A coating composition according to claim 5 wherein the equivalent ratio of amine mixture to self-addition epoxy resin is from about 0.75 to about 1 amine equivalent per epoxide group.
- 8. A coating composition according to claim 5 wherein the equivalent ratio of diepoxide to alkylphenol is 3:1 to 8:1 epoxy to phenoxy groups.
- 9. A coating composition according to claim 5 wherein the equivalent ratio of diepoxide to alkylphenol is 3.5:1 to 4.5:1 epoxy to phenoxy groups.
- 10. A coating bath comprising a mixture of about 20 to 30 weight percent of the composition of claim 5, and a remaining weight percent of defoaming agents in an acidic, aqueous medium of pH about 4.5 to 7.
- 11. An article electrocoated with a composition according to claim 5.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation of Ser. No. 08/250,991, filed May 31, 1994, now abandoned; which is a continuation of Ser. No. 08/112,864 filed Aug. 26, 1993, now abandoned; which is a continuation of 07/970,432 filed Nov. 2, 1992, now abandoned; which is a continuation of 07/798,359 filed Nov. 21, 1991, now abandoned; which is a continuation of 07/697,491, filed May 2, 1991, now abandoned; which is a continuation of 07/506,955, filed Apr. 10, 1990, now abandoned; which is a divisional of 07/288,327 filed Dec. 22, 1988, now U.S. Pat. No. 4,920,162 which is a continuation in part of 06/574,901, filed Jan. 30, 1984, now abandoned; and a continuation in part of 06/759,618, filed Jul. 26, 1985, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4920162 |
Clark et al. |
Apr 1990 |
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Divisions (1)
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Number |
Date |
Country |
Parent |
288327 |
Dec 1988 |
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Continuations (7)
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Number |
Date |
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Parent |
250991 |
May 1994 |
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Parent |
112864 |
Aug 1993 |
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Parent |
970432 |
Nov 1992 |
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Parent |
798359 |
Nov 1991 |
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Parent |
697491 |
May 1991 |
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Parent |
506955 |
Apr 1990 |
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Parent |
574901 |
Jan 1984 |
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