公开(公告)号：US12202973B1

公开(公告)日：2025-01-21

申请号：US18308212

申请日：2023-04-27

Applicant: DUPONT SPECIALTY ELECTRONIC MATERIALS US, LLC

Inventor： Kali Ananth Suryadevara ,  Steve Black ,  Dan Youmans ,  Kyoung Moo Koh ,  Mark Rickard

IPC: C08L75/06 ,  C08G18/08 ,  C08G18/42 ,  C08G101/00 ,  C08K5/521 ,  C08K7/14

Abstract: A faced polyisocyanurate foam board comprising a halogen-free foam made from a halogen-free foam formulation comprising isocyanate, polyol, and phosphorus-containing flame retardant, and 1.06 to 1.66 kg/m3 (30 to 47 g/ft3) of glass fiber distributed in the foam throughout the thickness of the board; wherein the polyisocyanurate foam board has a trimer content of 11 to 19.5 weight percent, at least 0.1 weight percent phosphorous, and as measured by ASTM E84, a Flame Spread Index of 0 to 25 and a maximum Smoke Development Index of 450 or less.