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:
Apr. 19, 1977
Filed:
Aug. 09, 1976
Applicant:
Inventor:
John F Hadley, Bradford Woods, PA (US);
Assignee:
H. H. Robertson Company, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
260 / ; 260838 ; 260844 ;
Abstract
Phenolic foam products are fabricated from phenol-aldehyde resol; a blowing agent; a condensation catalyst; a cell control agent; and an allyl ether of methylol-substituted phenol wherein the said allyl ether is present in a range from 0.5 to 25 percent by weight of the phenol-aldehyde resol. The function of the allyl ether is to overcome the extreme friability of the phenolic foam system.