Phase change ink colorants and phase change inks produced theref

Details Phase change ink colorants and phase change inks produced theref Phase change ink colorants and phase change inks produced theref

1991-06-17

1992-01-28

Dixon, Jr., William R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 20, C09D 1102

Patent

active

050840991

ABSTRACT:
This invention relates to modified phase change ink compatible colorants which comprise a phase change ink soluble complex of(a) a tertiary alkyl primary amine and (b) dye chromophores, i.e., materials that absorb light in the visible wavelength region to produce color having at least one pendant acid functional group in the free acid form (not the salt of that acid). These modified colorants are extremely useful in producing phase change inks when combined with a phase change ink carrier, even though the unmodified dye chromophores have limited solubility in the phase change ink carrier. Thin films of uniform thickness of the subject phase change ink compositions which employ the modified phase change ink colorants exhibit a high degree of lightness and chroma. The primary amine-dye chromphore complexes are soluble in the phase change ink carrier and exhibit excellent thermal stability.

REFERENCES:
patent: 3994872 (1976-11-01), Kuster
patent: 4133695 (1979-01-01), Wheeler et al.
patent: 4664715 (1987-05-01), Jesse
patent: 4786327 (1988-11-01), Wenzel et al.

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