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. 04, 2025
Filed:
Dec. 22, 2020
Huntsman International Llc, The Woodlands, TX (US);
Rene Alexander Klein, Hoegaarden, BE;
Nima Esmaeili, Etterbeek, BE;
Nadja Kathrin Richter, Brussels, BE;
Rajesh Kumar Gajendran, Brussels, BE;
Xiaodong Guo, Mechelen, BE;
Thomas Julien Joncheray, Woluwe Saint Pierre, BE;
Jan Vandenbroeck, Scherpenheuvel-Zichem, BE;
Abstract
A polyisocyanurate and/or polyurethane (PIR/PUR) comprising material having improved Flame. Smoke and/or Toxicity (FST) retardancy is disclosed and a method for forming said PIR/PUR comprising material. The PIR/PUR material is comprising at least 0.2 wt % of compounds having a number average equivalent weight<160 g/mol and at least one non-polymerized ethylenically unsaturated moiety based on the total weight of the PIR/PUR comprising material, and optionally 0.01 wt % up to 1 wt % of one or more radical initiator compounds based on the total weight of the PIR/PUR comprising material.