Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 30, 2010
Patent Application Number
10548196
Date Filed
February 26, 2004
Patent Primary Examiner
Patent abstract
The surface of rock or soil, newly-exposed, for example, by tunnelling, and having the tendency to become friable on exposure to the atmosphere, can be protected by forming thereon a film by the process of combining on the surface at least one coagulable material and a coagulating agent therefor. The preferred coagulable material is an aqueous polymer dispersion, preferably one which has some degree of elastomeric properties, and preferably one which additionally is anionically stabilized.
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