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. 05, 2021
Filed:
Jul. 31, 2017
Ddp Specialty Electronic Materials Us, Llc, Wilmington, DE (US);
Gregory T. Stewart, Midland, MI (US);
Matthew J. Kalinowski, Midland, MI (US);
Kshitish A. Patankar, Midland, MI (US);
Dakai Ren, Lake Jackson, TX (US);
Steven P. Crain, Midland, MI (US);
Ernest J. Herst, Midland, MI (US);
Daniel W. Cheney, Boise, ID (US);
Jeffrey K Olson, White City, OR (US);
Tyler G. Congleton, White City, OR (US);
DDP SPECIALTY ELECTRONIC MATERIALS US, LLC, Wilmington, DE (US);
Abstract
A fire retardant article has a wood-based material with a polyisocyanurate foam article attached thereto, where the polyisocyanurate foam article covers 90% or more of the exposed portion of the wood-based material, has a thickness greater than 1.8 centimeters, a foam core having a density of 28-128 kg/m, a trimer concentration characterized by at least one of (i) a trimer level in a range of 12-25 weight-percent and (ii) a molar ratio of trimer to sum of urethane and urea in a range of 1-8, a phosphorous concentration of at least 0.3 wt %, a combined concentration of phosphorous and bromine of at least 0.5 wt %, and a vapor permeable and non-combustible facer on at least one primary surface of the foam core.