Abstract:
In an electrocoating process acid binders which are present at least partly in the form of their salts with basic compounds are used and the basic compounds used for salt formation consist of the extent of 0.1 to 50 percent of the neutralization equivalent of the acid binder of at least one arylamine and/or alkynylamine and/or quaternary ammonium hydroxide and/or phosphonium hydroxide with at least one aromatic ligand, and other conventional additives and non-basic corrosion inhibitors may be contained in the aqueous solution or dispersion of the coating composition. The process is suitable for the production of particularly corrosion-resistant coatings on metal articles.
Abstract:
PRODUCING OF PSEUDOIONONES HAVING THE GENERAL FORMULA: CH3-C(CH3)=CR2-A;
CH2=C(CH3)-CHR2-A
AND R3OC(CH3)2-CHR2-A BY REACTION OF DEHYDROLINALOOLS CH3-C(CH3)=CR2-B;
CH=C(CH3)-CHR2-B
AND R3OC(CH3)2-CHR2-B WITH AN ACETOACETIC ESTER CH3-CO-CHR1-COOR3 (WITH A DENOTING -CH2-CH2-C(CH3)=CH-CH=CHR1-CO-CH3; B DENOTING -CH2-CH2-C(CH3)(OH)-C=CH; R1 AND R2 DENOTING H OR CH3; AND R3 DENOTING AN ALKYL GROUP) BY CONTINUOUS REACTION IN AT LEAST TWO VESSELS ARRANGED IN SERIES THE RESIDENCE TIMES IN THE VESSELS BEING ABOUT EQUAL AND THE REACTION TEMPERATURES RISING IN EACH CASE BY FROM 1* TO 50*C. FROM VESSEL TO VESSEL, THE TEMPERATURE IN THE FIRST VESSEL BEING FROM 160* TO 190*C. THE PRODUCTS ARE VALUABLE PERFUMES AND INTERMEDIATES FOR THE SYNTHESIS OF COMPOUNDS OF THE VITAMIN-A AND CAROTENOID SERIES.