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...
Reexamination Certificate
2006-06-20
2006-06-20
Wu, David W. (Department: 1713)
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...
C524S556000, C524S589000, C524S431000, C524S445000, C524S008000, C524S447000, C523S334000, C106S719000, C106S703000, C106S638000
Reexamination Certificate
active
07064161
ABSTRACT:
The invention relates to the technical field of mortars, concretes, and other compositions based on cement, and in particular to agents capable of modifying their rheological characteristics, in particular workability. Workability may be defined as the property of a hydraulic binder to remain workable during as long a time as possible. The invention relates to novel agents of the acrylic copolymer type having urethane functions for improving the workability of hydraulic binders, to a method of preparing such novel agents, to binders containing them, and to uses for them. Such agents have the advantageous property of not retarding the setting time.
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J.A.Brydson, Plastics Materials, Butterworth Heinemann, 7th Ed., p. 778.
Kensicher Yves
Suau Jean-Marc
Coatex S.A.
Sastri Satya
Wu David W.
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