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:
Feb. 25, 1986
Filed:
Jul. 12, 1974
Applicant:
Inventors:
Marco Wismer, Gibsonia, PA (US);
Jerome A Seiner, Pittsburgh, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; C09D / ;
U.S. Cl.
CPC ...
42840224 ; 106300 ; 106312 ; 210651 ; 42721331 ; 42721336 ; 521 76 ; 521 92 ; 521920 ;
Abstract
Air-containing microcapsular opacifiers, optionally containing pigment particles incorporated in the microcapsular structure, have substantially continuous, organic polymeric solid walls and a particle diameter of about 0.5 micron to about 10 microns, e.g., less than 1 or 2 microns. The opacifiers are produced by heating precursor microcapsules containing a liquid core material to a temperature sufficient to substantially drive off the core material from the precursor microcapsules and replace it with air.