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:
Feb. 24, 1987
Filed:
Sep. 25, 1985
Applicant:
Inventors:
Stacey A Baitinger, Wilmington, DE (US);
Robert C Brothers, Wilmington, DE (US);
Kenneth T Dishart, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ;
U.S. Cl.
CPC ...
4283177 ; 4283191 ; 4283197 ;
Abstract
Laminate structures comprising a foamed polyurethane or polyisocyanurate resin core with a facer material uniformly adhered thereto with an adhesive material having functional groups capable of interacting chemically with isocyanate groups in the foamed resin core are disclosed. Suitable adhesive materials include .alpha.-olefin-acid copolymers, ethylene vinyl alcohol, polyimides, polyamines and phenolic resins. The bond between the foam core and the facer material has a peel strength of at least 1.5 lbs/in., preferably 5 lbs/in.