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

Details Grinding and/or dispersing agent containing polymers and/or copo Grinding and/or dispersing agent containing polymers and/or copo

1995-02-06

1996-07-09

Lipman, Bernard

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524556, C08K 300

Patent

active

055345867

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: 5145902 (1992-09-01), Ravet et al.
patent: 5278248 (1994-01-01), Egraz et al.

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