US Patent 7410538 Granulated hydrophobic additive for cementitious materials

Patent 7410538 was granted and assigned to Dow Corning on August, 2008 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Dow Corning

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7410538

Patent Inventor Names

Frederic Gubbels0

Derek Butler0

Date of Patent

August 12, 2008

Patent Application Number

10398325

Date Filed

September 20, 2001

Patent Primary Examiner

‌

Anthony J Green

Patent abstract

A cementitious material in powder form comprising cement, also comprises sufficient of a granulated hydrophobing additive, which comprises form 5 to 15 parts by weight of an organopolysiloxane component, form 10 to 50 parts by weight of a water-soluble or water-dispersible binder and from 50 to 90 parts by weight of a carrier particle, to give from 0.01 to 5% by weight of the organosiloxane component based on the weight of the cement. The cementitious material displays good hydrophobicity, which may improve upon subsequent wettings of the applied cementitious material to a substrate.