Patent ID: 6015458
Filing Date: 2000-01-18
Classification: C07D,C09B

Abstract:
A process for preparing a perylene pigment composition comprising reacting(a) a perylene tetracarboxylic compound;(b) about 0.01 to about 20% by weight, relative to the perylene tetracarboxylic compound, of a non-pigmentary cyclic anhydride or imide having the formula ##STR12## wherein W is O or NR.sup.1,R.sup.1 is hydrogen, a metal, C.sub.1 -C.sub.6 alkyl, C.sub.5 -C.sub.8 cycloalkyl, C.sub.7 -C.sub.16 aralkyl, C.sub.6 -C.sub.10 aryl, or -Alk-X,R.sup.2, R.sup.3, and R.sup.4 are independently hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.7 -C.sub.16 aralkyl, or C.sub.6 -C.sub.10 aryl, or R.sup.2 and R.sup.3 together are fused-on rings and R.sup.4 is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.7 -C.sub.16 aralkyl, or C.sub.6 -C.sub.10 aryl, or R.sup.2, R.sup.3, and R.sup.4 together are fused-on rings,the dotted line is an optional double bond representing R.sup.2 --C.dbd.C--R.sup.3 or R.sup.3 --C.dbd.C--R.sup.4,Alk is C.sub.1 -C.sub.18 alkylene or C.sub.5 -C.sub.8 cycloalkylene, andX is(i) an anionic group selected from --SO.sub.3.sup.-, --COO.sup.-, --PO.sub.3.sup..dbd., --PO(OR.sup.x)O.sup.- (wherein R.sup.x is C.sub.1 -C.sub.6 alkyl), --O--PO.sub.3.sup..dbd., or --O--PO(OR.sup.y)O.sup.- (wherein R.sup.y is C.sub.1 -C.sub.6 alkyl), wherein the anionic group is electrically balanced with a stoichiometric amount of a cation,(ii) a cationic group having the formula --NR.sup.a R.sup.b R.sup.c+ (wherein R.sup.a, R.sup.b, and R.sup.c, are independently hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.7 -C.sub.16 aralkyl, or C.sub.6 -C.sub.10 aryl), wherein the cationic group is electrically balanced with a stoichiometric amount of an anion,(iii) NR.sup.d R.sup.e, wherein R.sup.d is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.7 -C.sub.16 aralkyl, C.sub.6 -C.sub.10 aryl, C.sub.2 -C.sub.6 alkanoyl, C.sub.7 -C.sub.11 aroyl, or sulfonyl and R.sup.e is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.7 -C.sub.16 aralkyl, or C.sub.6 -C.sub.10 aryl,(iv) OR.sup.f, wherein R.sup.f is hydrogen, C.sub.1 -C.sub.6 alkyl, or C.sub.6 -C.sub.10 aryl,(v) COOR.sup.g, wherein R.sup.g is C.sub.1 -C.sub.6 alkyl, C.sub.7 -C.sub.16 aralkyl, or C.sub.6 -C.sub.10 aryl,(vi) sulfonyl, or(vii) C.sub.6 -C.sub.10 aryl;(c) an equivalent excess, relative to the total amount of components (a) and (b), of ammonia or a primary amine having the formula R.sup.A -NH.sub.2 wherein R.sup.A is C.sub.1 -C.sub.6 alkyl, C.sub.7 -C.sub.16 aralkyl, or C.sub.6 -C.sub.10 aryl;(d) optionally, a solvent; and(e) optionally, one or more additives.