Red colors

Details Red colors Red colors

1976-12-17

1980-01-08

Rollins, Alton D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

426540, 525375, 526259, 526310, 528421, C07D22118, C07D21502

Patent

active

041828852

ABSTRACT:
Red colors having the anthraquinone structure ##STR1## are disclosed wherein R.sub.1 and R.sub.2 are independently selected from among hydrogen, halos, lower alkyls, lower alkoxies, nitros, and sulfonates, and R.sub.3 and R.sub.4 are independently selected from hydrogens, alkyls and alkylsulfonates. Precursors are disclosed as well. In a preferred embodiment R.sub.4 is an alkyl-containing polymer linking a plurality of anthraquinones into a polymeric colorant especially useful as a nonabsorbable colorant for edibles.

REFERENCES:
patent: 3920855 (1975-11-01), Dawson et al.
patent: 3937851 (1976-02-01), Bellance et al.
Ida et al., Yakugakuzasshi 89(1969) pp. 524-530, Index Chemical, 34, 117536 (1969) (English Translation thereof).

Affiliated with

Also associated with

Rating

Red colors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Red colors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Red colors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1941480