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| Number | Title | Issue Date |
| 5229209 | Preparation of vesiculated core/shell polymeric particles A process for the manufacture of core/shell polymer particles comprises forming a core particle containing acid functionality, a first shell around said core of a copolymer of a nonionic monoethylenically unsaturated aromatic monomer and a copolymerisable... | 07/20/1993 |
| 5081081 | Stabilized metal oxide powder composition A composition suitable for use in the manufacture of a ceramic material comprises free-flowing substantially non-aggregated particulate zirconia. A substantial proportion of the zirconia is present in the tetragonal crystalline form and the particles of z... | 01/14/1992 |
| 5055513 | Polymer granules and compositions containing them Compositions suitable for use as a camouflage material are based on vesiculated granules of polymer material which are substantially free of titanium dioxide but contain a light reflecting agent. The agent is an oxide, hydroxide or insoluble salt of magne... | 10/08/1991 |
| 5032425 | Treatment process A process of coating or encapsulating an inorganic powder is described in which the powder, preferably a pigment, is dispersed in an aqueous medium and an ethylenically unsaturated monomer is polymerized in the presence of the powder and while subjecting ... | 07/16/1991 |
| 4974338 | Drying process When it has been attempted to dry wet polymeric particles in hot air at up to 100° C. it has tended to produce discoloration in the product, introduce aggregates into the product, reduce the dispersibility of the product and reduce the integrity of the s... | 12/04/1990 |
| 4963156 | Tanning agent and process A leather tanning agent for use as a sole tannage or with another includes Al (III) ions, Ti (IV) ions and an organic masking agent in specific proportions. The ratio of Ti:Al expressed as metal oxides TiO2 :Al2 O3 on a we... | 10/16/1990 |
| 4937009 | Leather tanning process using aluminium (III) and titanium (IV) complexes In a leather tanning process, animal skins are treated with a tanning agent comprising an aluminium (III)/titanium (IV) mixed complex with a salt of a polyhydroxymonocarboxylic acid as a masking compound. The masking compound preferably has the general fo... | 06/26/1990 |
| 4927464 | Particulate material There is an increasing demand for products which are effective in the absorbancy of UV light but still remain transparent to visible light. Titanium dioxide has been proposed for this use. A new form of titanium dioxide has been developed which is very effecti... | 05/22/1990 |
| 4920160 | Polymeric particles and their preparation Swollen core/sheath polymeric particles are disclosed having one or more voids in the core formed by reaction with a base such as sodium hydroxide. The sheath contains styrene or similar monomer polymerized in an amount greater than 25 mole percent and th... | 04/24/1990 |
| 4874806 | Emulsion paint An emulsion paint of an improved shear resistance has been developed containing as a filling agent a titanium chelate which is the reaction product of a titanium orthoester, a glycol a glycol ether, an alkanolamine and an alpha-hydroxy carboxylic acid.... | 10/17/1989 |
| 4863973 | Polymeric particles and their preparation Swollen core/sheath polymeric particles are disclosed having one or more voids in the core formed by reaction with a base such as sodium hydroxide. The sheath contains styrene or similar monomer polymerized in an amount greater than 25 mole percent and th... | 09/05/1989 |
| 4832268 | Improved mill for grinding powder and method of using A mill for grinding powder material is disclosed having a cylindrical separation chamber into which the powder material is fed as a dispersion in a gas stream. Powdered material initially is supplied through two spaced powder inlets each located between a... | 05/23/1989 |
| 4820593 | Stabilised metallic oxides Zirconia has been used in the manufacture of ceramics for many years. The desirability of stabilizing the crystal form has been recognized and one or more stabilizing agents have been used. The present invention produced a stabilized zirconia carrying a coatin... | 04/11/1989 |
| 4806333 | Finely divided oxide and its manufacture A product suitable as a ceramic comprises substantially nonaggregated alumina particles with 95% by number having an aspect ratio (i.e., the ratio of the longest dimension to the shortest dimension for any single particle) not greater than 1.1 and more th... | 02/21/1989 |
| 4792098 | Improved impact plate grinding mill having reduced milling gas consumption The invention relates to an improved mill that achieves excellent milling with a reduced consumption of milling gas. The mill incorporates an impact plate in-line with a first jet and venturi and a second jet and venturi to entrain the milled particles fr... | 12/20/1988 |
| 4731089 | Leather tanning process using aluminium (III) and titanium (IV) complexes In a leather tanning process, animal skins are treated with a tanning agent comprising an aluminium (III)/titanium (IV) mixed complex with a salt of a polyhydroxymonocarboxylic acid as a masking compound. The masking compound preferably has the general fo... | 03/15/1988 |
| 4705568 | Compositions incorporating titanium compounds In has been desired to employ adhesion promoters in printing inks to promote the adhesion of the ink to a plastic substrate but hitherto the available adhesion promoters have tended to discolor the ink and in certain cases to produce an ink containing a s... | 11/10/1987 |
| 4563221 | Pigments and their manufacture Pigments for use in plastics should produce a composition containing as few nibs or aggregates as is possible and also develop as little dust as possible during handling. A new pigment has now been developed which comprises particulate titanium dioxide ha... | 01/07/1986 |
