| Patents for C09B 67 - Influencing the physical, e.g. the dyeing or printing, properties of dyestuffs without chemical reaction, e.g. by treating with solvents; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films (19,338) |
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| 06/04/1991 | US5021067 Rapid oxidation dyes for darkening hair; 5,6-dioxyindole derivatives |
| 05/28/1991 | US5019132 Moist filter cake of metal-free azo or azomethine intermediate, metallizing with metal salt to aqueous slurry of metal complx dye, diluting |
| 05/28/1991 | CA1284494C Phthalocyanine treatment process |
| 05/28/1991 | CA1284493C Pigments and photoconductive elements sensitive to infrared radiation |
| 05/22/1991 | EP0427993A2 Heterocyclic compounds and their use as pigments and dyes |
| 05/21/1991 | US5017231 Process for preparing coated pigments |
| 05/21/1991 | US5017195 Non-dustable granular dye: dye particles coated with hydroxylpropyl cellulose or carbohydrate |
| 05/15/1991 | EP0427535A2 Polyamide-polyester fluorescent pigments |
| 05/09/1991 | CA2015990A1 Polyamide-polyester fluorescent pigments |
| 05/07/1991 | US5013455 Process for enhancing the filterability of organic pigments |
| 05/07/1991 | CA1283925C Compositions used to dye keratinous fibers, specifically human hair, the said dye containing the precursors of oxydative dyes and heterocyclic couplers, process in which the said compositions are used, novel heterocyclic couplers used and process for their preparation |
| 05/02/1991 | EP0425442A2 Aqueous dyestuff preparations |
| 05/02/1991 | EP0425439A2 Aqueous printing ink for ink-jet printing |
| 05/02/1991 | EP0425435A1 Process for trichromic dyeing or printing |
| 05/02/1991 | EP0425434A2 Dyestuff mixtures and their use |
| 05/02/1991 | EP0424896A1 Dustless time pigment or dyestuff granulate |
| 04/25/1991 | WO1991006607A1 Process for treating pigments |
| 04/25/1991 | CA2065367A1 Process for treating pigments |
| 04/24/1991 | CN1050889A Structural aggregate pigments |
| 04/17/1991 | EP0422907A2 Copper phthalocyanine pigment composition and pigment composition dispersion containing same |
| 04/17/1991 | EP0422474A2 Fluorescent pigments |
| 04/17/1991 | EP0422237A1 Liquid composition and method of dyeing therewith |
| 04/16/1991 | US5008173 Phthalocyanine crystal, process for manufacture thereof and its use for electrophotographic photosensitive material |
| 04/16/1991 | CA1283125C Keratinic fiber dye composition for human hair having and halogenated nitroaniline base, dying process using the said composition and novel halogenated 2-nitroaniline used |
| 04/16/1991 | CA1283124C Keratinic fiber dye composition having a 2-nitro-metaphenylenediamine base, process for its preparation and novel 2-nitro-metaphenylenediamine used |
| 04/13/1991 | WO1991005745A1 Process for making structural aggregate pigments |
| 04/13/1991 | CA2067376A1 Process for making structural aggregated pigments |
| 04/11/1991 | DE4031650A1 Trichromatic dyeing or printing mixt., pref. for polyamide fibre |
| 04/10/1991 | EP0421930A2 Improvement of the filtrability of organic pigments |
| 04/10/1991 | EP0421927A2 Preparation process of mono- and polyazo-dyes |
| 04/10/1991 | EP0421916A2 Composite membranes and processes using them |
| 04/10/1991 | EP0421293A2 Aqueous preparations of C.I. azoic diazo components their manufacture and their use |
| 04/10/1991 | CN1050550A Spray granulation contaiaing 90-94% content mitsui indigopure |
| 04/09/1991 | US5006276 Dichroic dyes combination; stability at low temperature; light resistance |
| 04/09/1991 | US5006173 Transforming crude copper phthalocyanines into a pigmentary state |
| 04/09/1991 | US5006128 Substituted 2,4-di[4'-(disulfonaphth-2"-ylazo)phenylamino]-6-amino-1,3,5-triazines |
| 04/04/1991 | WO1991004302A1 Multicomponent mixtures of bright red, dispersed azo dyes |
| 04/02/1991 | CA1282405C Method for making uniformly sized particles from water-insoluble organic compounds |
| 03/27/1991 | CN1050206A Oxytitanium phthalocyanine, process for producing same and electrophotosensitive member using same |
| 03/21/1991 | WO1991004293A1 Colored metallic pigments |
| 03/21/1991 | CA2066628A1 Colored metallic pigments |
| 03/19/1991 | US5000792 Pigment dispersing agent and offset printing ink composition employing the same |
| 03/13/1991 | EP0416675A1 High stability pigments belonging to the 1,4-diketone pyrrole-[3,4-C]-pyrroles and new pyrrole-[3,4-C]-pyrroles series, suitable for the purpose |
| 03/12/1991 | US4999205 Curcumin complexed on water-dispersible substrates |
| 03/12/1991 | US4999132 Polyesteramide dispersing agent |
| 03/07/1991 | DE4002768A1 Disperse dyestuff formulation with polyester contg. eutectic mixts. |
| 03/07/1991 | DE3928979A1 Pigment formulation giving ink with good flow - contg. co-polyester prepd. from 12-hydroxy-stearic acid and hydroxy-carboxylic acid with shorter main chain |
| 03/05/1991 | US4997920 Dyeing polyolefins |
| 03/05/1991 | US4997590 Coating |
| 03/05/1991 | CA2023146A1 High stability pigments belonging to the 1,4-diketone pyrrole-¬3,4-c|-pyrroles and new pyrrole-¬3,4-c|-pyrroles series, suitable for the purpose |
| 02/28/1991 | DE4026255A1 Novel sulphonated aromatic cpds. useful as dispersants |
| 02/28/1991 | DE3927811A1 Copolymer of anhydride of unsatd. carboxylic acid and cyclic ketene - used as dispersant, esp. in washing compsn., or support for active material |
| 02/27/1991 | EP0414585A1 Keratinous fibres dye composition containing an indole dye and at least a paraphenylenediamine having a secondary amino group and process |
| 02/26/1991 | US4996304 Reactive disazo dyes containing fluoro-chloropyrimidyl groups and vinyl sulfonyl group |
| 02/26/1991 | US4995885 Concentrated aqueous dye solutions for dyeing paper |
| 02/21/1991 | WO1991002033A1 Stable, fluid, aqueous pigment dispersions |
| 02/19/1991 | US4994566 Crystallization using tetrahydrofuran |
| 02/19/1991 | US4994339 Intermediate ethylene copolymer layer to block carrier injection; photosensitivity; laser-diode copies |
| 02/19/1991 | US4994193 For home laundering; having Acid Blue, Direct Blue and Reactive Red dyes outside dispersed phase; antisoilants |
| 02/18/1991 | CA2023458A1 Curcumin complexed on water-dispersible substrates |
| 02/13/1991 | EP0412121A1 Azo pigment composition having improved process heat stability and dried ink transparency. |
| 02/12/1991 | WO1991002034A1 New pigment preparations based on perylene compounds |
| 02/12/1991 | US4992586 Dehalogenation of a halonitrobenzene compound |
| 02/12/1991 | US4992101 Process for the preparation of opaque diketopyrrolo-pyrrole pigments |
| 02/12/1991 | US4992078 Lowering inorganic salt content using semipermeable membrane |
| 02/12/1991 | US4991919 Optical head apparatus including concentric, periodic grating in a waveguide |
| 02/12/1991 | CA1279962C Flaky coloured pigments |
| 02/05/1991 | US4990280 Photoactivator dye composition for detergent use |
| 02/05/1991 | US4990187 Process for preparing gravure base ink |
| 02/05/1991 | CA1279869C Modified acid dyestuff |
| 01/31/1991 | DE3924815A1 Sensitiser for photo-oxidative reactions - contg. formed, polymerically bound, photosensitive dyes |
| 01/30/1991 | EP0409981A1 Ferrocene derivatives, surfactants containing them and process for producing organic thin films |
| 01/24/1991 | DE3913667A1 Pigment formulation giving good printing properties - contg. di: or poly:isobutenyl-succinic bis:amide and/or bis:ester |
| 01/23/1991 | EP0409737A1 Oxytitanium phthalocyanine, process for producing same and electrophotosensitive member using same |
| 01/23/1991 | EP0409028A1 Optical bleaching process for paper coatings and optical bleaching compositions used for this process |
| 01/22/1991 | US4986852 Pigments and use thereof |
| 01/22/1991 | US4986851 Mixture of organic sulfate and phosphate dispersants |
| 01/22/1991 | CA2021719A1 Dye composition for keratin fibers using indolic colorant and at least one paraphenylenediamin including a secondary amino group, and process for application |
| 01/22/1991 | CA2021559A1 Process for the whitening of paper coating compositions and also whitener preparations for this process |
| 01/22/1991 | CA1279425C Automotive paint compositions containing pearlescent pigments and dyes |
| 01/16/1991 | EP0408508A1 Liquid dyestuff preparations, method for their production and their use |
| 01/16/1991 | EP0408499A2 Method of conditioning organic pigments |
| 01/16/1991 | EP0408498A2 Plate like organic effect pigments |
| 01/16/1991 | EP0408192A1 Solvent soluble dye |
| 01/16/1991 | EP0407831A1 Method of preparing colour intensive, transparent and easily dispersible copper phthalocyanines |
| 01/15/1991 | US4985045 Mixtures of mon-azo dyestuffs for dyeing and printing hydrophobic synthetic fiber materials |
| 01/15/1991 | US4985044 Multi-component mixtures of blue disperse azo dyes for the dyeing of synthetic fibers |
| 01/15/1991 | US4985043 Mixtures of monoazo dyes containing halogen and cyano substituents |
| 01/15/1991 | CA1279140C Pigment composition |
| 01/10/1991 | WO1991000318A1 Anionic polycarboxylated surfactants as dye-leveling agents |
| 01/02/1991 | EP0406168A1 Addition products of phenylalkylglycid ethers |
| 01/02/1991 | EP0405448A1 Purification of tellurapyrylium dyes |
| 01/02/1991 | EP0405420A1 Electrophotographic photoreceptor |
| 01/01/1991 | US4981773 Method for stabilization of organic base substances against light |
| 01/01/1991 | US4981767 Photoconductive mixed crystals of phthalocyanine compounds and process for producing the same |
| 01/01/1991 | US4981612 Optical element having non-linear optical properties |
| 01/01/1991 | US4981489 Disazo compounds and formulations containing same |
| 12/31/1990 | CA2020044A1 Phenylalkyl glycidyl ether addition products |
| 12/27/1990 | EP0403917A1 Solid pigment preparations of high concentration |
| 12/27/1990 | EP0403809A2 Chemiluminescent solution based on substituted perylene |