Phosphorus-containing copolymers, method for the production...

Details Phosphorus-containing copolymers, method for the production... Phosphorus-containing copolymers, method for the production...

2006-02-24

2010-11-30

Harlan, Robert D. (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S319000, C526S286000

Reexamination Certificate

active

07842766

ABSTRACT:
Copolymers which are obtained by free radical copolymerization of a vinylic poly(alkylene oxide) compound (A) with an ethylenically unsaturated monomer compound (B), and the use thereof as dispersants for aqueous solid suspensions, in particular hydraulic binders based on cement, lime, gypsum and anhydrite, are described. With very good water reduction power, the copolymers according to the invention scarcely retard the hardening of the concrete and ensure long processability of the concrete.

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