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:
Nov. 27, 1979
Filed:
Jan. 04, 1979
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ;
U.S. Cl.
CPC ...
521106 ; 521121 ; 521126 ; 521127 ; 521129 ; 521130 ; 521137 ; 521187 ; 521188 ;
Abstract
Production of foamed plastics with improved combustion characteristics by condensing aqueous solutions of aminoplast precondensates with at least bifunctional organic isocyanate whereby an acid curing catalyst and an accelerator for polyurethane formation is used. For performing the condensation, the aqueous solution of the precondensate is added to the mixture of isocyanate and the accelerator at the same time as but separately from the acid curing catalyst.