| 摘要 |
<p>The invention is concerned with novel alkylated hydroxyl aryl compounds having the following structural formula: < IMG > wherein R1 is hydrogen, alkyl having 1-4 carbon atoms, or alkoxy having from 1-4 carbon atoms, R2 is a formyl moiety or a bisulfite adduct of a formyl moiety; R3 is alkyl having from 1-6 carbon atoms, hydroxy alkyl having from 2-6 carbon atoms, alkenyl having from 2-6 carbon atoms, alkynyl having from 2-6 carbon atoms, hydroxy alkenyl having from 2-6 carbon atoms, hydroxy alkynyl having from 3-6 carbon atoms, keto alkyl having from 2-6 carbon atoms, or keto alkenyl having from 3-6 carbon atoms; Y is a group of the formula < IMG > -N? (R4)3X? or a halogen or sulfate; R4 is alkyl hydroxy alkyl, or carboxyl alkyl, each alkyl having from 1-4 carbon atoms, and R5 is hydrogen or another adjoining fused six membered aromatic ring. The compounds of the invention are useful as additives in alkaline zinc electroplating baths.</p> |
