Concrete admixture additive

Details Concrete admixture additive Concrete admixture additive

2007-12-25

2007-12-25

Pezzuto, Helen L (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S280000, C526S282000, C526S284000, C526S304000, C526S307800, C526S332000, C526S333000, C526S347000, C526S348000, C526S348600

Reexamination Certificate

active

10655343

ABSTRACT:
A new family of concrete admixture additives can be derived from reacting a mixture of olefins/cyclic olefins-maleic anhydride copolymers and methoxy polyethylene glycol amines and/or polyethylene glycol monoalkyl ethers, or a mixture of styrene-maleic anhydride copolymers and methoxy polyethylene glycol amines and/or polyethylene glycol monoalkyl ethers, or a mixture of styrene-olefins/cyclic olefins-maleic anhydride terpolymers and methoxy polyethylene glycol amines and/or polyethylene glycol monoalkyl ethers. These reactions lead to formation of a kind of carboxylic salt containing polymer, which can be used alone in concrete. Only a small amount of this substance is needed to provide excellent water reduction, high concrete flowability and high early strength.

REFERENCES:
patent: 5612396 (1997-03-01), Valenti et al.
patent: 6503319 (2003-01-01), Courage et al.
patent: 6573316 (2003-06-01), Albrecht et al.

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