Coatex S.a.

Omya Sa

Coatex S.a.s.

Printex Inc.

Societe D'exploitation Des Procedes Coatex

Georges Ravet

Jean-Bernard Egraz

Jacques Mongoin

Jean-Marc Suau

Jacky Rousset

Pierre Blanchard

Matthias Buri

Maurice Husson

Rene Blum

Hubert Bousquet

Henri Grondin

Jean-Pierre Fichou

Olivier Gonnet

Isabelle Capra-Ogier

Francois Dupont

Andre Rambert

Gilles Bousquet

Jean Bernard Egraz

Jean Pierre Fichou

Catherine Bonnet

The use, for the manufacture of paper coating colors, of a copolymer water-soluble in a neutral or alkaline medium as an agent for simultaneously adjusting the water retention of the coating colors and the Brookfield viscosity of the said coating colors; a water-retention agent comprising the copolymer; and coating colors and the coated paper and cardboard thus obtained.

Water soluble retention agent

Method for processing a mineral fillers with a phosphate, said fillers and their uses

Method for the treatment of mineral fillers using organic phosphate treatment agents. Treated mineral fillers obtained by said method and suspension of these treated mineral fillers in polyols. Use of these suspensions in the manufacture of flexible, semirigid, or rigid polyurethane foams used for the manufacture of molded or nonmolded objects.

Treated mineral fillers suspensions of these fillers in polyols and their uses in polyurethane foams

Water-retaining and optical-brightener-activating polymer composition, paper coating colors and sheets of coated paper thus obtained

Water-retaining and optical-brightner-activating polymer composition, paper coating colors and sheets of coated paper thus obtained

Treated mineral fillers suspensions of these fillers in polyols and

A method of producing milling adjuvants and/or dispersing agents, with the use of a separation apparatus which is comprised of one or more organic and/or mineral membranes; a milling adjuvant and/or dispersing agent produced by said method; and use of said adjuvant/agent in preparing an aqueous suspension of mineral particles; and the use of the aqueous suspension in applications involving pigments.

Method of producing milling adjuvants and/or dispersive agents, by

Method of producing milling adjuvants and/or dispersive agents by

A grinding agent containing polymers and/or copolymers partially neutralized by magnesium, for aqueous suspensions of mineral substances to be used in pigmentary applications is disclosed. A grinding agent composed of polymers and/or copolymers having a specific viscosity of between 0.3 and 0.8 and obtained by treatment, using one or several solvents, of a polymer and/or copolymer resulting from polymerization and/or copolymerization of acrylic and/or vinyl monomers comprising acid groups whose active acid sites are partially or completely neutralized to a degree of neutralization of 40 to 60%, including terminals, of the active acid sites using a neutralizing agent containing magnesium ions, and a degree of neutralization reaching 60% using a neutralizing agent containing sodium ions is disclosed. A procedure for grinding in an aqueous suspension using said agent, as well as aqueous suspensions produced using said procedure and their applications to the fields of weight fillers, paper coating, paints, and plastics is also disclosed.

Grinding and/or dispersing agent containing polymers and/or copolymers

Ground calcium carbonate is prepared by a process of grinding a suspension containing calcium carbonate to be ground and a water-soluble grinding agent in an aqueous medium while the temperature of the aqueous suspension is kept at below 60.degree. C.

Process for grinding calcium carbonate in aqueous media

A grinding agent containing polymers and/or copolymers partially neutralized by magnesium, for aqueous suspensions of mineral substances to be used in pigmentary applications is disclosed. A grinding agent composed of polymers and/or copolymers obtained by polymerization and/or copolymerization of acrylic and/or vinyl monomers containing acid groups, and in which the active acid sites are completely or partially neutralized to a degree of 40% to 60%, including terminals, using a neutralizing agent containing magnesium ions, and to a degree of up to 60% using a neutralizing agent containing monovalent ions is disclosed. A procedure for grinding in an aqueous suspension using said agent, as well as the aqueous suspensions produced using said procedure and their applications to the fields of weight fillers, paper coating, paints, and plastics is also disclosed.

Growing community of inventors

Saint-Genis-les-Ollieres, France

Georges Ravet