Gold(I) mercaptocarboxylic acid esters, method of their preparation and use
AssigneeDegussa AG
InventorsMarion Lotze, Hans Mehner
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Abstract
Novel gold(I) mercaptocarboxylic acid esters of the formula (I) ##STR1## in which X is a C.sub.1 - to C.sub.3 alkylene group and Z is a group from the series tricyclo(5,2,1,0.sup.2.6)decane-8- or -9-yl or tricyclo (5,2,1,0.sup.2.6)decyl-3- or -4-methyl. These esters can be prepared from mercaptocarboxylic acid esters of the formula (II) ##STR2## and from a gold(I) chloride-dialkylsulfide complex. The novel esters can be used in gold preparations for gilding solid bases, especially ceramic materials. Compared to known gold(I) mercaptocarboxylic acid esters, the novel esters result in considerably shorter drying times for gold preparations.
Claims17
A method of gilding solid bases, comprising applying a gold preparation comprising at least one gold (I) mercaptocarboxylic acid ester onto said solid base, wherein said gold (I) mercaptocarboxylic acid ester has the formula ##STR9## in which X is an alkylene group and Z an alkyl group, wherein X is a C.sub.1 - to C.sub.3 alkylene group and Z is selected from the group consisting of tricyclo(5,2,1,0.sup.2.6)decane-8- or -9-yl and tricyclo(5,2,1,0.sup.2.6)decyl-3- or -4-methyl.
Dependencies are inferred from the claim text.