Cement dispersants comprising graft copolymers

Details Cement dispersants comprising graft copolymers Cement dispersants comprising graft copolymers

2005-05-17

2005-05-17

Seidleck, James J. (Department: 1711)

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

Synthetic resins

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

C525S384000, C525S162000, C525S163000, C525S285000

Reexamination Certificate

active

06894121

ABSTRACT:
Cement dispersants made of graft copolymers of a specified type and/or their salts are produced by using as an intermediate product allyletherester monomers prepared by an esterification reaction of α-allyl-ω-hydroxy-polyoxyalkylene refined so as to have peroxide value less than 5.0 meq/kg and aliphatic monocaboxylic acid under a specified condition in the absence of solvent and in the presence of an antioxidant.

REFERENCES:
patent: 6627703 (2003-09-01), Kinoshita et al.

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