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. 16, 1985
Filed:
Oct. 25, 1983
Applicant:
Inventors:
Thomas A Ward, Pittsburgh, PA (US);
Stanley T Greer, Pittsburgh, PA (US);
William G Boberski, Gibsonia, PA (US);
Jerome A Seiner, Pittsburgh, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09J / ;
U.S. Cl.
CPC ...
1563073 ; 52232 ; 106 1813 ; 106 1816 ; 106 1827 ; 156 71 ; 156278 ; 156330 ; 252602 ; 252606 ; 26051624 ; 427386 ; 428247 ; 428913 ; 428920 ; 428921 ; 521 85 ; 521 90 ; 521 91 ; 521 92 ; 521907 ; 523179 ;
Abstract
An intumescent curable composition has as its principal constituents an epoxy resin; a curing agent; and an additive component which is composed of a mixture of materials which provide a source of phosphorus, zinc, boron and an expansion gas. The aforesaid composition is capable of forming a carbonaceous char upon exposure to heat or flame.