公开(公告)号：US11135813B2

公开(公告)日：2021-10-05

申请号：US16323271

申请日：2017-07-31

申请人： DDP SPECIALTY ELECTRONIC MATERIALS US, LLC

发明人： Gregory T. Stewart ,  Matthew J. Kalinowski ,  Kshitish A. Patankar ,  Dakai Ren ,  Steven P. Crain ,  Ernest J. Herst ,  Daniel W. Cheney ,  Jeffrey K Olson ,  Tyler G. Congleton

IPC分类号： B32B21/04 ,  B32B3/26 ,  B32B5/18 ,  B32B5/24 ,  B32B7/08 ,  B32B7/12 ,  B32B21/02 ,  B32B21/14 ,  B32B27/18

摘要： 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/m3, 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.