Engelhard Corporation

National Starch and Chemical Corporation

Engelhard Minerals & Chemicals Corporation

Frank J Washabaugh

Robert H Williams

William S Stoy

Richard C Pluta

William C Goble

Paul R Demko

Disclosed are compositions suitable for use as a litter for the accumulation of animal urine comprised of at least one uncalcined clay substrate, said substrate characterized by having a calcium oxide content of less than about 5% by weight and wherein the clay mineral component of said substrate contains at least about 35% by weight attapulgite, combined with at least one chemical pH indicator which provides a visual indication of pH change. Also disclosed are processes for making such compositions and to litters using such compositions.

Compositions for use as diagnostic animal litter and methods for their

Heat-treated palygorskite clay, such as attapulgite having controlled low moisture and carbonate content, is used with steel wool or other non-asbestos fiber in asbestos-free friction material compositions such as clutch linings, brake pads, truck blocks and the like. These compositions include conventional fillers, lubricants, wear modifiers and the like in order to achieve friction and wear properties comparable to asbestos-based materials.

Asbestos-free friction material incorporating attapulgite clay

Liquid unsaturated polyester resins may be thickened and made thixotropic by addition of a colloidal, gelling grade clay such as attapulgite and a quaternary ammonium surfactant under moderate shear. This thixotropic polyester composition is formed without making provision for first chemically reacting clay and surfactant. For enhanced long-term stability a tertiary amine surfactant having an alkyl group and two polyoxyethylene groups attached to the nitrogen may be added to the above composition. For polyester resins having a styrene monomer content greater than 35%, the clay and surfactant are mixed with styrene first, to form a pregel, prior to addition of the polyester resin to be thickened.

Method of thickening liquid polyester system with clay

Improved adhesive compositions useful in the manufacturing of corrugated boards are disclosed; said compositions being comprised of a mixture of: (a) a crosslinkable water dispersible polymer, (b) an ungelatinized starch, (c) a urea-formaldehyde resin, (d) an acidic metal salt, and (e) water.

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Titusville, NJ, United States of America

Frank J Washabaugh