A process for using grinding and/or dispersing agent containing

Details A process for using grinding and/or dispersing agent containing A process for using grinding and/or dispersing agent containing

1992-11-10

1995-07-11

Jones, Deborah

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253295, 526240, 241 16, C08F 842

Patent

active

054322391

ABSTRACT:
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.

REFERENCES:
patent: 4775420 (1988-10-01), Gonnet et al.
patent: 4840985 (1989-06-01), Gonnet et al.
patent: 4845191 (1989-07-01), Hautier
patent: 4868228 (1989-09-01), Gonnet et al.
patent: 5181662 (1993-01-01), Bousquet et al.

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