Phase change inks comprising colorant, a phase change ink carrier, and an
antioxidant or UV stabilizer of the formula
##STR1##
wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7,
R.sub.8, and R.sub.9 each, independently of the others, is hydrogen,
hydroxy, amino, alkyl, aryl, arylaikyl, alkylaryl, alkoxy, aryloxy,
arylalkyloxy, alkylaryloxy, halogen, cyano, aldehyde, ketone, ester,
amide, sulfide, sulfoxide, nitrile, sulfone, acyl, or carboxylic acid,
provided that at least one of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5,
R.sub.6, R.sub.7, R.sub.8, and R.sub.9 is alkyl having at least about 8
carbon atoms, alkoxy having at least about 8 carbon atoms, aryl having at
least about 6 carbon atoms, aryloxy having at least about 6 carbon atoms,
arylalkyl having at least about 7 carbon atoms, arylalkyloxy having at
least about 7 carbon atoms, alkylaryl having at least about 7 carbon
atoms, or alkylaryloxy having at least about 7 carbon atoms.
De verandering van de fase inkt het bestaan van uit kleurstof, een de inktdrager van de faseverandering, en een anti-oxyderende of UVSTABILISATOR van de formule ## STR1 ## waarin R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, en R.sub.9 elk, onafhankelijk van anderen, waterstof, hydroxy, amino, alkyl zijn, aryl, arylaikyl, alkylaryl, alkoxy, aryloxy, arylalkyloxy, alkylaryloxy, halogeen, cyano, aldehyde, keton, ester, amide, sulfide, sulfoxide, nitril, sulfon, acyl, of carboxylic zuur, op voorwaarde dat minstens één van R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, v stabilizer of the formula ## STR1 ## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, and R.sub.9 each, independently of the others, is hydrogen, hydroxy, amino, alkyl, aryl, arylaikyl, alkylaryl, alkoxy, aryloxy, arylalkyloxy, alkylaryloxy, halogen, cyano, aldehyde, ketone, ester, amide, sulfide, sulfoxide, nitrile, sulfone, acyl, or carboxylic acid, provided that at least one of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, and R.sub.9 is alkyl having at least about 8 carbon atoms, alkoxy having at least about 8 carbon atoms, aryl having at least about 6 carbon atoms, aryloxy having at least about 6 carbon atoms, arylalkyl having at least about 7 carbon atoms, arylalkyloxy minstens ongeveer 7 koolstofatomen hebben, alkylaryl minstens ongeveer 7 koolstofatomen hebben, of alkylaryloxy die minstens ongeveer 7 koolstofatomen hebben.
