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:
Oct. 10, 1978
Filed:
Mar. 25, 1977
Applicant:
Inventors:
Anthony Joseph Papa, Saint Albans, WV (US);
Richard Lee Rollins, South Charleston, WV (US);
Frank Edward Critchfield, Charleston, WV (US);
Assignee:
Union Carbide Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
521127 ; 260 / ; 521132 ; 521136 ; 521159 ;
Abstract
This invention provides a low density (<2 pcf.) modified phenolic foam produced by combining a resole resin with a phosphorus-containing isocyanate-terminated prepolymer in the presence of a minor amount of a surfactant, a catalytic amount of an organotin catalyst, and a halocarbon blowing agent. Foam products producted by the method of the invention have a good combination of low combustibility, friability resistance and compressive strength.