摘要:
Disclosed is a process for preparing dianthranilate compounds which comprises (a) admixing reactants as follows: (1) a diol of the formula R1(OH)2, wherein R1 is an alkylene group having at least about 20 carbon atoms, and wherein the —OH groups are primary or secondary, (2) isatoic anhydride, present in an amount of at least, about 2 moles of isatoic anhydride per every one mole of diol, (3) a catalyst which is 1,4-diazabicyclo [2.2.2]octane, N,N,N′,N′-tetramethylethylene diamine, or a mixture thereof, said catalyst being present in an amount of at least about 0.2 mole of catalyst per every one mole of diol, and (4) a solvent; and (b) heating the mixture thus formed to form a dianthranilate compound of the formula Also disclosed is a process for preparing diazopyridone colorants which comprises (I) preparing a dianthranilate compound by the aforementioned method, (II) reacting the dianthranilate compound with nitrosylsulfuric acid to form a diazonium salt, and (III) reacting the, diazonium salt with a pyridone compound to form a diazopyridone compound.
摘要:
Disclosed is a process for preparing a diazopyridone compound either (A) of the formula or (B) of the formula which comprises diazotizing a dianiline and coupling it with a pyridone or diazotizing an aniline and coupling it with a dipyridone.
摘要:
Disclosed is a phase change ink composition comprising a phase change ink carrier and a compound of the formula and dimers thereof, wherein R, R2, X and Z are as described herein.
摘要:
Nano-sized phthalocyanine pigment particles include a phthalocyanine chromogen structure as the main component, and a substituted soluble metal-phthalocyanine dye as a minor component that is associated non-covalently with the phthalocyanine chromogen structure, wherein the presence of one or more sterically bulky substituents on the substituted soluble metal-phthalocyanine dye limits an extent of pigment particle growth and aggregation, to afford nano-sized pigment particles.