| Patents for C09C 1 - Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black (27,610) |
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| 06/02/1981 | US4271234 Iron oxide magnetic pigments for the production of magnetic coatings |
| 06/02/1981 | US4270955 With propionic acid, adding trialkyl, tricresyl or tributoxyethyl phosphate |
| 06/02/1981 | CA1102297A1 Treatment of spent bleaching clay |
| 05/28/1981 | WO1981001366A1 Use of silicic acid pellets as exipients for dental mass material |
| 05/27/1981 | EP0029148A1 Process for lowering the soot structure in preparing furnace blacks |
| 05/27/1981 | EP0029137A1 Titanium dioxide pigments of good dispersibility, process for their preparation and their use |
| 05/26/1981 | CA1101611A1 Stabilizing titanium dioxide pigments with vanadates |
| 05/26/1981 | CA1101609A1 Mineral fillers |
| 05/13/1981 | EP0028290A1 Corrosion inhibiting pigment and paint or varnish containing it |
| 05/12/1981 | US4267213 To impart hydrophilicity to substrates having siliceous surfaces |
| 05/12/1981 | US4267160 Carbon black for low-hysteresis rubber compositions |
| 05/12/1981 | CA1100721A1 Carbon pellets with controlled porosity |
| 05/06/1981 | EP0027997A1 Mineral filler, particularly calcium carbonate for paints and paper coatings |
| 05/06/1981 | EP0027996A1 Process for manufacturing mineral fillers by wet grinding |
| 05/06/1981 | EP0027992A1 Thermostable lead white, process for its preparation and articles of thermoplastic and elastic polymers pigmented by it |
| 05/05/1981 | US4265870 Method for producing carbon black |
| 05/05/1981 | CA1100255A1 Pigment preparation and use in coating compositions |
| 05/05/1981 | CA1100254A1 Enhancing solvent barrier property of pigmented polymeric bodies |
| 04/28/1981 | US4264568 By contacting with gaseous chlorine or hydrogen chloride |
| 04/28/1981 | US4264462 For use in magnetic tapes |
| 04/28/1981 | US4264372 Calcium carbonate containing kaolin clay additive |
| 04/21/1981 | US4263051 Soft-settling silica flatting agent |
| 04/15/1981 | EP0026948A1 Process for preparing a weather-resistant and/or light-stable rutile titanium dioxide pigment |
| 04/15/1981 | EP0026819A1 Process for preparing pearl-shaped blue ferrocyanide pigments |
| 04/14/1981 | US4261966 Process for the preparation of pigment grade iron oxides from ferrous sulphate and the resulting Fe2 O3 pigments |
| 04/14/1981 | US4261964 Utilization of combustible components of a tail-gas in the manufacture of carbon black at a high production rate |
| 04/07/1981 | USRE30568 Containing barium, magnesium and/or calcium |
| 04/07/1981 | US4260583 Reduction of deposits in carbon black reactors |
| 04/07/1981 | US4260498 Silane coated silicate minerals and method for preparing same |
| 04/07/1981 | US4260454 Precipitated siliceous products used in paper |
| 04/01/1981 | EP0026091A1 Method for manufacture of sized paper |
| 03/31/1981 | US4259308 Controlling flow of fuel to drier to ensure that dryness of product will meet predetermined specifications |
| 03/31/1981 | US4259218 Rubber compositions and method therefor |
| 03/31/1981 | CA1098257A1 Exterior grade titanium dioxide coated mica |
| 03/25/1981 | EP0025583A1 Electroconductive powder and process for production thereof |
| 03/17/1981 | US4256720 Combining carbonaceous feed with off-specification rerun carbon black |
| 03/17/1981 | US4256508 Iron oxide pigments with improved color strength |
| 03/10/1981 | US4255129 Apparatus and method for processing organic materials into more useful states |
| 03/10/1981 | CA1097032A1 Method and apparatus for producing carbon black |
| 03/10/1981 | CA1097031A1 Pigmentary bright primrose yellow monoclinic bismuth vanadate and processes for the preparation thereof |
| 03/03/1981 | CA1096585A1 Oxidation of metallic iron to black oxide pigments |
| 02/24/1981 | CA1096107A1 Chrome pigments |
| 02/17/1981 | US4251351 Processing of calcium carbonate minerals |
| 02/17/1981 | US4251283 Bismuth vanadate pigments and process for preparing same |
| 02/17/1981 | US4251221 Measuring properties and adjusting introduction of gases |
| 02/17/1981 | CA1095688A1 Precipitated silica granulates |
| 02/10/1981 | US4250158 Process for recovering carbon black and hydrocarbons from used tires |
| 02/10/1981 | US4250145 Carbon black reactor with improved burner |
| 02/05/1981 | WO1981000296A1 Apparatus and method for processing organic materials |
| 02/04/1981 | EP0023387A1 A dispersible pigment composition, its preparation and use in the coloration of thermoplastic materials and paints |
| 02/04/1981 | EP0023265A1 Finely divided solids, their preparation and use |
| 02/03/1981 | CA1094824A1 Process for the manufacture of abrasive material |
| 01/27/1981 | US4247530 Combustion of hydrocarbons, heat exchanging, carbonization |
| 01/27/1981 | US4247338 Metal chromate pigment compositions |
| 01/20/1981 | US4246355 Ion exchange processes and products |
| 01/20/1981 | US4246251 Method of producing carbon black |
| 01/20/1981 | US4246232 Apparatus for making carbon black |
| 01/20/1981 | US4246040 Reacting basic polyaluminum salt with an acid in presence of powder |
| 01/20/1981 | US4246039 White pigment quality by wet processing |
| 01/20/1981 | US4246006 By mixing diamond particles with powdered metal, sintering in non-oxidising atmosphere, and crushing |
| 01/20/1981 | CA1093907A1 Inorganic oxide pigments |
| 01/20/1981 | CA1093789A1 Precipitated siliceous products and methods for their use and production |
| 01/20/1981 | CA1093762A1 Black-pigmented, uv-hardening printing ink |
| 01/14/1981 | EP0022385A1 Device and process of producing carbon black by incomplete aero-acetylenic combustion |
| 01/14/1981 | EP0022187A1 Inorganic titanium- and iron-oxide pigments of improved brilliance and dispersibility in lacquer-binding agents and process for preparing them |
| 01/13/1981 | US4244933 Calcium carbonate particles and processes for preparing same |
| 01/13/1981 | US4244707 Abrasive composition for use in toothpaste |
| 01/07/1981 | EP0021439A1 Flake silver powders with chemisorbed monolayer of dispersant and process for preparing the same |
| 01/07/1981 | EP0021262A1 Inorganic titanium- and iron-oxide pigments of improved brilliance and dispersibility in lacquer-binding agents and process for preparing them |
| 01/07/1981 | EP0020889A1 Carbon blacks for printing inks |
| 01/06/1981 | US4243365 Carbon black pellet and method and apparatus for producing same |
| 01/06/1981 | CA1092754A1 Silane treatment of titanium dioxide pigment |
| 12/30/1980 | US4242318 Process for the preparation of aqueous suspensions containing at least 65% by weight of calcium carbonate |
| 12/30/1980 | US4242251 Composition comprising a thermoplastic resin and mineral filler particles coated with an ethylenically unsaturated organic acid, the ethylenic double bonds of which remain substantially unreacted; product resulting from causing said to react |
| 12/23/1980 | USRE30455 Precombustion of oil in chemical reactor |
| 12/23/1980 | US4241142 Dull and matte finish |
| 12/23/1980 | US4241022 Carbon black for low-hysteresis rubber compositions |
| 12/23/1980 | US4240870 Calcium carbonate |
| 12/23/1980 | US4240587 Method for recycling tires and similarly compounded materials to recover usable constituents |
| 12/16/1980 | US4239736 Bleaching iron impurity |
| 12/16/1980 | US4239548 Titanium dioxide pigment |
| 12/16/1980 | CA1091632A1 Processing of calcium carbonate minerals |
| 12/10/1980 | EP0020316A1 Surface-modified pigment of natural kaolin material and a process of producing same |
| 12/10/1980 | EP0019714A1 A process and an apparatus for filtering solids from carbon black smoke |
| 12/09/1980 | US4238322 Apparatus for preparation of a sprayable precipitated silicic acid suspension |
| 12/09/1980 | US4238199 Process for the control of the ratio DBP number/DBP number after pressing in the manufacture of carbon black pellets |
| 12/09/1980 | CA1090957A1 Dust-free metal chromate pigment composition and process of preparation |
| 12/09/1980 | CA1090953A1 Iron oxide coated mica nacreous pigments |
| 12/02/1980 | US4237092 Method and apparatus for producing carbon black |
| 12/02/1980 | US4236934 Nonleafing aluminum flake pigments |
| 12/02/1980 | CA1090833A1 Processing of clays |
| 12/02/1980 | CA1090503A1 Chrome pigments |
| 11/25/1980 | US4235861 From iron sulfate oxidized in air |
| 11/25/1980 | US4235768 Production of readily dispersible titanium dioxide pigments |
| 11/25/1980 | US4235639 Chrome pigment |
| 11/25/1980 | US4235638 For imparting hydrophilicity to siliceous surfaces |
| 11/18/1980 | US4234348 Process for the production of iron oxide red pigments |
| 11/18/1980 | CA1089630A1 Process for the preparation of pigmentary bright primrose yellow bismuth vanadate |
| 11/18/1980 | CA1089607A1 Inorganic pigment comprising a solid solution of differing spinels |
| 11/12/1980 | EP0018866A1 Silica-based ball- or pearl-shaped pigment, process for obtaining it and its use, especially as a reinforcing filler in elastomers |