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:
Aug. 25, 2009
Filed:
Nov. 10, 2005
Mark P. Allen, Bruce Township, MI (US);
Huzeir Lekovic, Troy, MI (US);
Srikanth Miryala, Farmington Hills, MI (US);
Arnold W. Braun, Jr., Trenton, MI (US);
Mark P. Allen, Bruce Township, MI (US);
Huzeir Lekovic, Troy, MI (US);
Srikanth Miryala, Farmington Hills, MI (US);
Arnold W. Braun, Jr., Trenton, MI (US);
Dow Global Technologies, Inc., Midland, MI (US);
Abstract
A structural member is reinforced with a thermoset polymer foam having (a) a density of 80-650 kg/m, (b) a storage modulus, measured on a 12 mm wide×3.5 mm thick×17.5 single cantilever sample according to ASTM D 4065-01, under conditions of 1 Hz and a heating rate of 2° C./min, such that the ratio of the storage modulus at 0° C., expressed in MPa, divided by the density of the thermoset polymer foam, expressed in kg/m, is at least 0.4, and (c) the ratio of the storage modulus of the thermoset polymer foam at 100° C. divided by the storage modulus of the thermoset polymer foam at 0° C. is at least 0.5. The foam is preferably a polyurethane-isocyanurate foam. The foam exhibits excellent resistance to cracking due to mechanical and thermal stresses.