Yara Engineering Corporation

Thomas D Thompson

Wayne M Bundy

Robert W Bradshaw

Peter Economou

William F Moll, Jr

John F Gergel

A stable calcined clay slurry and method of preparing the same are provided by adding to a calcined clay suspension containing at least 50% clay in aqueous medium about 0.30% to 0.49% by weight of anionic polymer and about 0.007% to 0.011% by weight of cationic polymer by weight in the slurry.

Stable clay slurries

A method and composition for control of rheological properties of polyester-styrene resin compositions is provided in which a smectite is reacted with a quaternary ammonium salt to provide a desired level of quaternary ammonium salt thereon and the treated smectite is added to a polyester-styrene resin mixture to produce a desired level of viscosity.

Rheological control of polyester-styrene resin compositions

A color developing coating and coated paper are provided in which a paper sheet is coated with a mixture of dispersing agent, adhesive and a reactive pigment made up of essentially from the group bentonite and montmorillonite admixed with kaolinite, a polyvalent cation and a ligand.

Color developing coating using unrefined clays on paper

An oxidizing clay for pressure sensitive record materials is provided by treating an acid leached clay with cupric salts.

Dye or color developing inorganic pigments

This invention provides a high bulking clay consisting essentially of selectively flocculated ultra fine particles of clay coated with a member from the group consisting of polyfunctional amines and long chain amines.

High bulking calcined clay pigments and methods of making the same

Reactive pigments and methods of producing the same for use in manifold copy systems is provided in which a member from the group consisting of bentonite and montmorillonite is admixed with kaolinite, added to an aqueous solution of a polyvalent cation, a ligand is added and the solids separated, dried and pulverized.

Reactive pigments and methods of producing the same

Color developing coating compositions containing reactive pigments

A reinforcing pigment for elastomeric materials is provided in the form of kaolin treated with an organic acid containing functional groups such as -NH.sub.2, -SO.sub.3 H and -SH.

Growing community of inventors

Flemington, NJ, United States of America

Thomas D Thompson