Organic compounds -- part of the class 532-570 series – Organic compounds – Nitrogen attached directly or indirectly to the purine ring...
Patent
1981-02-03
1983-08-30
Coughlan, Jr., Paul M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Nitrogen attached directly or indirectly to the purine ring...
106 23, 106288Q, C09B 5704
Patent
active
044018150
ABSTRACT:
Novel isoindoline colorants of the formula ##STR1## where R.sup.1 is phenyl or 1-naphthyl, which are unsubstituted or substituted by groups which do not confer solubility, R.sup.2 and R.sup.3, independently of one another, are C.sub.1 -C.sub.4 -alkyl or benzyl or R.sup.3 is hydrogen and R.sup.2 is C.sub.1 -C.sub.4 -alkyl or benzyl, or is phenyl or 1-naphthyl which are unsubstituted or substituted by groups which do not confer solubility, R.sup.1 and R.sup.2 being identical or different, and the use of these colorants.
In surface coatings, printing inks and plastics, the products give brilliant yellow to red colorations, which exhibit very good lightfastness and fastness to weathering, and good fastness to overcoating.
REFERENCES:
patent: 3794659 (1974-02-01), Leister et al.
patent: 3991054 (1976-11-01), Bock et al.
Bock Gustav
Elser Wolfgang
Kemper Reinhard
Lotsch Wolfgang
BASF - Aktiengesellschaft
Coughlan, Jr. Paul M.
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