公开(公告)号：WO2021262656A1

公开(公告)日：2021-12-30

申请号：PCT/US2021/038382

申请日：2021-06-22

Applicant: SES FOAM, LLC

Inventor： LUNA, Jose ,  VALENTINE, Charles

IPC: C08G18/22 ,  C08G18/24 ,  C08G18/42 ,  C08G18/46 ,  C08G18/76 ,  C08J9/14 ,  C08K5/00 ,  C08K5/54 ,  C08G18/225 ,  C08G18/4202 ,  C08G18/4208 ,  C08G18/4213 ,  C08G18/4607 ,  C08G18/73 ,  C08G18/7664 ,  C08G18/7671 ,  C08G2101/00 ,  C08G2110/0025 ,  C08G2110/005 ,  C08J2201/022 ,  C08J2203/182 ,  C08J2375/06 ,  C08J2485/02 ,  C08J9/144 ,  C08K5/0066 ,  C08K5/521 ,  C08L75/06

Abstract: This disclosure provides for new polyisocyanurate (PIR) foams that exhibit improved flame retardant properties and thermal barrier properties, and which can pass certain thermal barrier tests in the absence of a protective covering such as specified in the thermal barriers codes. In an aspect, it has been unexpectedly discovered that when a relatively high viscosity and high functionality polyisocyanate is used with a high aromatic content polyester polyol and an HFO and/or HCFO blowing agent, and a flame retardant compound, unexpectedly good flame retardant polyisocyanurate foams can be generated, for example, when a high A-side:B-side volume ratio (v:v) and a relatively high Isocyanate Index (ISO Index) are used in the process.