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. 23, 2021
Filed:
Mar. 14, 2017
Ddp Specialty Electronic Materials Us, Llc, Wilmington, DE (US);
Xiaomei Song, Shanghai, CN;
Dakai Ren, Midland, MI (US);
Hongyu Chen, Shanghai, CN;
Yi Zhang, Shanghai, CN;
DDP SPECIALTY ELECTRONIC MATERIALS US, LLC, Wilmington, DE (US);
Abstract
An intumescent coating system contains: a polyol component; an isocyanate component; a latent crosslinker having two or more —NACHOR groups, where A is selected from a group consisting of H and —CHOR, and in each case R is independently selected from a group consisting of hydrocarbons having from one to four carbons, the latent crosslinker being present at a concentration of 30 weight-percent or more based on polyol weight; a boron component one weight-percent or more and 10 weight-percent or less based on total weight of the formulation; and expandable graphite at a concentration of 10 weight-percent or more and 50 weight-percent or less based on the total intumescent system weight; where the polyol and isocyanate are selected so that the reaction product at room temperature of the intumescent coating system components produces a coating having a tensile elongation of 40-percent or more as determined according to ISO 37.