Carbon paper inks containing wax-anhydride compounds

Claim 1

In a carbon paper ink comprising a mixture of I. a vehicle oil, Ii. a pigment, Iii. a dye, the improvement comprising, in said mixture, an additive Iv. selected from the group consisting of A. a wax-maleic compound adduct reaction product of (i) maleic acid, maleic anhydride, citraconic acid, citraconic anhydride, ethylmaleic acid, ethylmaleic anhydride, glutaconic acid, glutaconic acid anhydride, itaconic acid, itaconic acid anhydride, methylitaconic acid, or methylitaconic acid anhydride and (ii) plastic microcrystalline wax, tank bottom microcrystalline wax, solvent extracted microcrystalling wax, Fischer-Tropsch wax, polyalkylene hydrocarbon wax or mixtures thereof, characterized by a melting point of at least about 150°F. and a penetration of less than about 50 (ASTM Test Method D5-25), the molar ratio of (i) to (ii) being from about 0.9 to about 1.5 and the reaction being carried out at substantially atmospheric pressure under free radical conditions, and B. said wax-maleic compound adduct reaction product of A coupled with a polyfunctional compound selected from the group consisting of 1. a polyfunctional polyalcohol selected from the group consisting of ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, triethylene glycol, butylene glycol, polyethylene glycol having a molecular weight of about 600, tetramethylene glycol, neopentyl glycol, 2-methyl-1,3-pentanediol, 1,5-pentanediol, hexamethylene glycol, glycerol, polyglycerol, pentaerythritol, mannitol, trimethylolpropane, trimethylolethane, 1,2,6-hexanetriol, polypentaerythritol, polyallyl alcohol, polymethallyl alcohol, ##SPC12## where R is hydrocarbon, amino, amide, ester, oxygen, silicon, ketone, phosphorus, sulfur, sulfone, or sulfoxide, A is alkyl, alkoxy, halo or nitro, and n is 1-4, 2. a polyfunctional amine selected from the group consisting of a polyamine of the formula ##EQU24## where A is ##EQU25## m being 2-10 and n being 1-8, C 8 H 17 NH-CH 2 CH 2 NH 2 , C 14 H 29 NH-CH 2 CH 2 NH 2 , C 16 H 33 NHCH 2 CH 2 NH 2 , C 12 H 25 NHC 2 H 4 NHC 2 H 4 NHC 2 H 4 NH 2 , C 12 H 21 NHC 4 H 8 NH 2 , ##EQU26## p-phenylene diamine, m-phenylene diamine, o-phenylene diamine, ##SPC13## where R is O, S, ##EQU27## x being 1-4, ##EQU28## R' being H or alkyl, ##EQU29## or ##EQU30## R" being alkyl, ##SPC14## and morpholine, and