	US 12,460,041 B2
	Method for improving the flame, smoke and/or toxicity retardancy in polyisocyanurate / polyurethane (PIR/PUR) comprising materials
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); and Jan Vandenbroeck, Scherpenheuvel-Zichem (BE)
Assigned to HUNTSMAN INTERNATIONAL LLC
Appl. No. 17/785,548
Filed by Huntsman International LLC, The Woodlands, TX (US)
PCT Filed Dec. 22, 2020, PCT No. PCT/EP2020/087582 § 371(c)(1), (2) Date Jun. 15, 2022, PCT Pub. No. WO2021/130201, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 19219222 (EP), filed on Dec. 23, 2019.
Prior Publication US 2023/0021509 A1, Jan. 26, 2023
Int. Cl. C08G 18/12 (2006.01); C08F 4/34 (2006.01); C08F 220/20 (2006.01); C08F 222/10 (2006.01); C08F 290/06 (2006.01); C08G 18/08 (2006.01); C08G 18/09 (2006.01); C08G 18/18 (2006.01); C08G 18/20 (2006.01); C08G 18/48 (2006.01); C08G 18/67 (2006.01); C08G 18/76 (2006.01); C08G 18/79 (2006.01); C08G 18/81 (2006.01); C08G 101/00 (2006.01); C08J 9/14 (2006.01); C08K 5/14 (2006.01)

CPC C08G 18/12 (2013.01) [C08F 4/34 (2013.01); C08F 220/20 (2013.01); C08F 222/104 (2020.02); C08F 290/067 (2013.01); C08G 18/092 (2013.01); C08G 18/14 (2013.01); C08G 18/18 (2013.01); C08G 18/1833 (2013.01); C08G 18/1866 (2013.01); C08G 18/2036 (2013.01); C08G 18/48 (2013.01); C08G 18/4804 (2013.01); C08G 18/672 (2013.01); C08G 18/673 (2013.01); C08G 18/7664 (2013.01); C08G 18/794 (2013.01); C08G 18/8175 (2013.01); C08J 9/141 (2013.01); C08K 5/14 (2013.01); C08G 2101/00 (2013.01); C08G 2110/0025 (2021.01); C08G 2115/02 (2021.01); C08G 2350/00 (2013.01)]

18 Claims

1. A polyisocyanurate and/or polyurethane (PIR/PUR) comprising material that comprises:

at least 0.2 wt % of ethylenically unsaturated compounds based on the total weight of the PIR/PUR comprising material, said compounds having a number average equivalent weight<160 g/mol and having at least one non-polymerized ethylenically unsaturated moiety, 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 and

wherein the compounds having at least one non-polymerized ethylenically unsaturated moiety are selected or originating from compounds having at least one ethylenically unsaturated moiety and having an onset temperature for radical polymerization (T_onset) with or without the radical initiator which is 2° C. up to 40° C., lower than the maximum reaction temperature achieved during the process for making the PIR/PUR comprising material (T_reaction).