Method for producing black pigment

Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...

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106472, C09C 144

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active

057829683

ABSTRACT:
A method for producing a black pigment including the step of contacting a polymer (1) containing 5 to 500 mmol of hydroxyl groups, and optionally 30 to 300 mmol of carboxyl groups per 100 g of the polymer with a carbon material (2) at a temperature of 50 to 250.degree. C. The obtained black pigment can be dispersed in a dispersion media at a high density, can be used for producing a black-hued ink, a black-hued electrodeposition coating material, a thermosetting black-hued coating material, a photocuring black-hued coating material, and a photocuring black-hued electrodeposition coating material, and is useful as a material for a black matrix of a color filter or a counterelectrode substrate for black and white display TFT array substrate.

REFERENCES:
patent: 4379871 (1983-04-01), Werle et al.
patent: 4988420 (1991-01-01), Batzill et al.
patent: 5106417 (1992-04-01), Hauser et al.
patent: 5190586 (1993-03-01), Mizuguchi et al.

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