The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 1990
Filed:
Aug. 10, 1989
Applicant:
Inventors:
Jeffrey K Parkinson, Lawrenceville, GA (US);
Anthony J O'Lenick, Jr, Lilburn, GA (US);
Assignee:
Siltech Inc., Norcross, GA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106727 ; 106781 ; 106806 ; 106823 ;
Abstract
An improved water-resistant cementitious composition and products made therefrom are provided by forming an aqueous cementitious slurry, as for example of calcined gypsum and adding an organic amine preferably containing a hydroxyl functionality and a silanic hydrogen containing silicone compound. The slurry is set in conventional manner by heating and drying. The resulting product has a high degree of water-resistance and has no adverse effect upon the physical properties of the board.