Polymer-modified fiber-cement composition

Details Polymer-modified fiber-cement composition Polymer-modified fiber-cement composition

2006-12-12

2006-12-12

Szekely, Peter (Department: 1714)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S005000, C524S007000, C524S008000

Reexamination Certificate

active

07148270

ABSTRACT:
A method for providing a polymer-modified fiber-cement composite by forming an aqueous composition including admixing an emulsion polymer having a glass transition temperature (Tg) of from −25° C. to 150° C., cement, cellulosic fibers, siliceous material, and water; forming a composite precursor by removal of at least some of the water; and curing/drying the composite precursor at a temperature at least 10° C. higher than the Tg of the polymer is provided. In an alternative embodiment the emulsion polymer is applied to the composite precursor. Polymer-modified fiber-cement composites formed by the method of the invention are also provided.

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Abstract of XP 002246061 for Japanese Patent No. 19950017622.

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