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1. (WO1990006971) COMPOSITION D'ELECTROLAQUAGE CONTENANT UN ADDITIF EPOXY AUTO-CONDENSE DE POLYAMINE ET REVETEMENTS AINSI PRODUITS
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

WE CLAIM:
l. A coating composition comprising:
a principal resin comprising a self-addition epoxide resin-polyamine adduct with pendant alkylphenoxy groups;
a cross-linker comprising a blocked
polyisocyanate compound;
a grind resin comprising the reaction product of an aromatic diepoxide, a bis (aromatic alcohol) , a polyglycolamine, a diamine and an alkaryl monoepoxide;
a plasticizer; and
pigments selected from a group consisting of inorganic, organometallic and organic compounds.

2. A composition according to Claim 1, further comprising a defoamer, neutralizing acids and solvents.

3. A composition according to Claim 1, further comprising an anti-cratering agent selected from
polyacrylate resins, polyether resins, polyester resins, and silicone resins.

4. A composition according to Claim 3 wherein said anti-cratering agent is a polyacrylate resin having alkyl, aromatic, and dialkylamino pendant groups.

5. A composition according to Claim 1 wherein said crosslinker is a toluene diisocyanate compound, a blocked isocyanurate of a hexane diisocyanate compound or mixtures thereof.

6. A composition according to Claim 1 wherein said plasticizer is a poly(alkylene oxide) alcohol compound.

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7. A composition according to Claim 1, wherein the principal resin is the reaction product of a
self-addition epoxide resin and a mixture of amines
selected from the group consisting of amino alcohols and

5 alkyldia ines, the equivalent ratio of amine mixture to
adduct being from about 0.75 to 1 amine equivalent per
epoxide group;
the self-addition epoxide resin being the
reaction product of an aromatic or alkylaromatic
10 diepoxide having a molecular weight of from about 350 to 1500 and a phenol of the formula RC6H4OH wherein R is
hydrogen or an alkyl group of from 1 to 18 carbons, and
the equivalent ratio of diepoxide to alkyl phenol being
about 3 to 8 epoxy groups per phenol group.
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8. A composition according to Claim 7 wherein the equivalent ratio of diepoxide to alkylphenol is 3.5
to 4.5 epoxy groups per phenol group.

20 9. A composition according to Claim 8, wherein the diepoxide is formed by reacting bisphenol A and a
diglycidyl ether wherein the diglycidyl ether has a
molecular weight of from about 300 to about 800.

25 10. A composition according to Claim 7,
wherein the adduct is formed from bisphenol A, glycidyl
chloride and alkyl glycidyl ether of from about 4 to 12
carbons.
11. A composition according to Claim 1, wherein

30 the cross-linker is the reaction product of
trimethylolpropane, toluene diisocyanate and an alkyl
alcohol of from 4 to 12 carbons.

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12. A composition according to Claim 1, wherein the cross-linker is the reaction product of the isocyanurate of hexane-l,6-diisocyanate and a secondary amine.

13. A composition according to Claim 12 wherein the secondary amine has from 3 to 6 carbons in each alkyl group.

14. 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,tf-dimethyl propylene diamine and
9-amino-3 , 6-dioxanonan-l-ol .

15. A composition according to Claim 1, wherein the plasticizer is nonylphenoxypolypropoxy alcohol or cresyloxypolypropoxy alcohol.

16. A composition according to Claim 1, wherein the anti-cratering agent is a polymer of C,-C6 alkyl acrylate, styrene, C1-C6 hydroxyalkyl acrylate and dimethylaminoethyl acrylate.

17. A composition according to Claim 1, wherein the weight percent ranges of ingredients relative to total weight of nonvolatile solids are about 30% to 55% of principal resin, about 15% to 30% of cross-linker, up to about 20% of grind resin, about 3% to 12%
plasticizer, up to 35% pigments and up to about 3% anti-cratering agent.

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18. A composition according to Claim 17,
wherein the weight percentages are about 40% principal
resin, about 22% cross-linker, about 7% grind resin,
about 5.5% plasticizer, about 25% pigments, and about

5 0.5% anti-cratering agent.

19. 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
10 primary/tertiary diamine with the self-condensate of an
alkyl phenol of the formula RC6H4OH, 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 1500;
15 about 15% to 30% of a blocked isocyanate
cross-linker formed from trimethylol propane, toluene
diisocyante and alkyl alcohol of 4 to 12 carbons, or from the isocyanurate of hexane-l,6-diisocyanate and secondary amine having from 3 to 6 carbons in each alkyl group, or

20 a mixture thereof;
up to about 20% of a grind resin formed from
bisphenol A diglycidyl ether, an aromatic diol,
9-amino-3,6-dioxanonan-l-ol, N,W-dialkyl alkylenedia ine of 4 to 12 carbons and nonylphenolmonoglycidyl ether;
25 about 3% to 12% of a plasticizer comprising
nonylphenoxypolypropoxy alcohol or cresyloxypolypropoxy
alcohol; and
up to about 35% pigments comprising inorganic, organometallic, or organic compounds or mixtures thereof;

30 the percentage being in weight relative to the total weight of the composition.

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20. A composition according to Claim 19 further comprising up to about 3% of an anti-cratering agent comprising a polymer of alkyl acrylate, styrene,
hydroxyalkyl acrylate and dimethylaminoethyl acrylate.

21. A coating composition comprising:
about 40% of a principal resin formed by
adducting a mixture of diethanolamine and N,N-dimethyl-propylene diamine with the self-condensate of nonylphenol and the diepoxide bisphenol A-liquified-bisphenol A diglycidyl ether having a molecular weight of 350 to 1500;
about 22% of a blocked isocyanate cross-linker formed from trimethylolpropane, toluene diisocyanate and 3-oxahexan-l-ol;
about 7% of a grind resin formed from bisphenol A diglycidyl ether, bisphenol A, nonylphenylmonoglycidyl ether, 9-amino-3,6-dioxanonan-l-ol and
N N-dimethylpropylene diamine;
about 5.5% of a plasticizer selected from nonylphenoxypolypropoxyethanol and cresylphenoxypoly-propoxyethanol ;
about 0.5% of an anti-cratering agent
comprising a polymer of butyl acrylate, 2-hydroxyethyl acrylate, dimethylaminoethyl acrylate and styrene; and
about 25% pigments comprising inorganic, and/or organic compounds and/or mixtures thereof.

22. A coating composition according to Claim 19, 20 or 21 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.

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23. A coating composition according to Claim
19, 20 or 21 wherein the equivalent ratio of diepoxide to alkylphenol is 3:1 to 8:1 epoxy to phenoxy groups.

5 24. A coating composition according to Claim
19, 20 or 21 wherein the equivalent ratio of diepoxide to alkylphenol is 3.5:1 to 4.5:1 epoxy to phenoxy groups.

25. A coating bath comprising a mixture of 10 about 20 to 30 weight percent of the composition of each of Claims 1 through 21, and a remaining weight percent of defoaming agents and an acidic, aqueous medium of pH
about 4.5 to 7.

15 26. An article electrocoated with a
composition according to each of the Claims 1 through 21.