Modified form of disazo pigment CI 20040

Details Modified form of disazo pigment CI 20040 Modified form of disazo pigment CI 20040

1975-11-11

1977-09-13

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260208, 106288Q, C09B 4300

Patent

active

040481522

ABSTRACT:
A form of the disazo pigment C.I. 20040 having the formula 30% of ##STR1## IS SHOWN HAVING IMPROVED COVERING POWER, IMPROVED FLUIDITY IN LACQUER SYSTEMS AND HIGH LUSTER, WHICH IS CHARACTERIZED BY A SPECIFIC SURFACE OF 10 - 20, PREFERABLY 12 - 17 M.sup.2 /G AND A MAXIMUM IN GRAIN DIAMETER DISTRIBUTION BETWEEN 500 AND 1000 NM, AT LEAST 30 % OF ALL GRAINS HAVING A DIAMETER OF FROM 500 TO 1000 NM AND LESS THAN 25% OF ALL GRAINS HAVING A DIAMETER OR MORE THAN 1000 NM. This new pigment is obtained by isolating the pigment, after coupling, by stirring it out with alkali and, after having filtered it off and washed until neutrality, heating it to temperatures above 100.degree. C with an organic solvent which is immiscible with water or miscible with water to a limited degree only.

REFERENCES:
patent: 3711461 (1973-01-01), Pretzer et al.
patent: 3872078 (1975-03-01), Cseh et al.
patent: 3910875 (1975-10-01), Rieper et al.
patent: 3928315 (1975-12-01), Ribka
Colour Index, 3rd Ed., vol. 4, p. 4140, CI No. 20040.

Affiliated with

Also associated with

Rating

Modified form of disazo pigment CI 20040 does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Modified form of disazo pigment CI 20040, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modified form of disazo pigment CI 20040 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-273018