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:
Jul. 20, 1993
Filed:
Nov. 20, 1991
Applicant:
Inventors:
John F Grunewalder, Mequon, WI (US);
Mark A Voelker, Butler, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106-2 ; 106271 ; 106 1829 ; 524490 ;
Abstract
A treating composition for a porous substrate such as wood is provided in the form of an oil-in-water dispersion comprising a dispersed phase of an organic solvent in relatively low amounts to reduce V.O.C., a water repellent, and a stabilizing surfactant. Optionally, preservatives and resins may be included. Penetration with relatively low organic solvent content is achieved by producing a dispersion having a maximum mean particle size of 3000 .ANG.. Also disclosed is a method of preparing the dispersion with a microfluidizer.