Sun Chemical Corporation

Other

Ciba Specialty Chemicals Corporation

Terence R Chamberlain

Norman Wayne Smith

Donald Thomas DeRussy

Russell J Schwartz

Gregory T Huber

Tatiana Romanova

Anthony C Zwirgzdas

Russel J Schwartz

Paul Andrew Merchak

Niranjan Deo

Kimberly A Clark

Michael John Lemmons

Tatiana N Romanova

Paul A Merchak

Tariana N Romanova

Donald Henderson

A polyalkyl benzimide polymeric dispersant produced from the reaction product of polyisobutylene amine with 1,2,4-benzenetricarboxylic anhydride, and method of preparing same and colorant dispersions containing dispersant.

Polymeric dispersants and dispersions containing same

Polymeric colored dispersant having the structure A-(B&#x2014;X), where A is an organic chromophore; B is a covalently bonded linking moiety; X is a branched or linear C-Cpolymeric covalently linked hydrocarbon, and n is an integer from 1 to 4, and low viscosity colorant dispersions containing same having a relative interfacial tension drop of less than about 1.5.

Polymeric colored dispersants and colorant dispersions containing same

A polymeric dispersant of the structure: wherein Ris selected from the group consisting of H, CH, and a combination thereof, and n is an integer from 4 to 200, for use in printing inks.

Polymeric dispersant

Mono- and Bis-Azo/Hydrazone Pyrrole Pigments and Methods for preparing same.

Mono- and bis-hydrazone pigments

A process for preparing transparent Pigment Yellow 138 by grinding Pigment Yellow 138 in the presence of a grinding agent, preparing an aqueous slurry of the ground particles, and filtering the slurry resulting in a filter cake containing particles of transparent Pigment Yellow 138. In addition, a process for improving color strength of an ink and/or plastic composition is also disclosed by adding transparent Pigment Yellow 138 to the composition.

Preparation of yellow pigment

A process for the manufacture of a pigments form of perylene-3,4,9,10-tetracarboxylic acid N,N'-bis-methylimide having a transparent clean yellowish shade, comprises comminution of a mixture comprising perylene-3,4,9,10-tetracarboxylic acid N,N&#x2032;-bis-methylimide produced by methylation of perylenetetracarboxylic imide with an alkylating agent and perylene-3,4,9,10-tetracarboxylic acid N,N&#x2032;-bis-methylimide produced by the condensation of perylenetetracarboxylic anhydride with methylamine, in the presence of dimerized rosin. The pigments obtainable are notable for their outstanding coloristic and rheological properties and are suitable for use in a variety of applications.

Perylene pigment composition and process therefor

Mono-and bis-hydrazone pigments

Poly (alkylene oxide) substituted acetoacetanilides of the formula: ##STR1## wherein B comprises a divalent bridging moiety selected from the group consisting of C.sub.1 -C.sub.6 alkylene, --NHSO.sub.2 --, --O--, --CO--, --COO--, and --NCHO--; X comprises a poly (alkylene oxide) having a number average molecular weight of about 200 to 10,000; R comprises 0 to 4 moieties independently selected from the group consisting of C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy and halogen; and d is an integer of 1 to 3. The poly (alkylene oxide) substituted acetoacetanilides are prepared by reacting a poly (alkylene oxide) monoamine, diamine or triamine with isatoic anhydride followed by acetoacetylation of the resultant aminobenzamide. The substituted acetoacetanilides are useful for preparing improved diarylide pigment compositions which in turn are useful for preparing storage stable printing inks (especially of the publication gravure type).

Poly (alkylene oxide) substituted acetoacetanilides

Diarylide pigment compositions useful for preparing storage stable printing inks (especially of the publication gravure type) are prepared using a poly (alkylene oxide) substituted acetoacetanilide together with a typical acetoacetanilide and coupling the mixture of acetoacetanilides with tetrazotized dichlorobenzidine.

Poly (alkylene oxide)-modified diarylide pigment composition

Pigments that can be used to color plastics, paints, and printing inks have the structural formula ##STR1## wherein each R.sup.1, each R.sup.3, and R.sup.7 represent hydrogen, halogen, nitro, or lower alkyl and each R.sup.2, each R.sup.4, each R.sup.5, and R.sup.6 represent hydrogen or halogen.

Growing community of inventors

Cincinnati, OH, United States of America

Terence R Chamberlain