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:
May. 04, 1999
Filed:
Jul. 08, 1997
Malkit S Deogan, Chesterfield, MO (US);
Rubin Feldman, Ladue, MO (US);
Allen W Thorpe, Olivette, MO (US);
Edward W Taylor, Jr, Ballwin, MO (US);
Nu-Chem, Inc., Fenton, MO (US);
Abstract
An intumescent composition for protecting a substrate against fire and thermal extremes includes a polymer binder containing a small amount of platinum, preferably in the form of a coordination complex. The binder is a non-silicone based polymer, and the platinum acts as a catalyst under fire conditions to protect the char and increase char life, thereby increasing the time of protection. The binder is preferably an epoxy, most preferably an epoxy polysulfide. The platinum is preferably mixed with nickel, most preferably as a nickel-platinum ammonia complex, the complex being present in an amount of less than two percent by weight of the composition. The complexes are preferably tetrafluoroborate salts. The composition also preferably includes a solvent, a carbonific, a spumific, and a polymerization catalyst.