US 12,134,675 B2
Biobased polyurethane elastomer memory foam compositions
Jason James Robinson, Toronto (CA); Radu Lucian Vicol, Toronto (CA); Mustafa Abu Ghalia, Toronto (CA); and Guerino G. Sacripante, Oakville (CA)
Assigned to Evoco Limited, Toronto (CA)
Filed by Evoco Limited, Toronto (CA)
Filed on Feb. 22, 2022, as Appl. No. 17/677,264.
Prior Publication US 2023/0265236 A1, Aug. 24, 2023
Int. Cl. C08G 18/20 (2006.01); C08G 18/32 (2006.01); C08G 18/42 (2006.01); C08G 18/66 (2006.01); C08G 18/68 (2006.01); C08G 18/76 (2006.01); C08G 63/672 (2006.01); C08K 5/00 (2006.01); C08K 5/11 (2006.01); C08G 101/00 (2006.01)
CPC C08G 18/68 (2013.01) [C08G 18/7671 (2013.01); C08G 2101/00 (2013.01); C08G 2110/0008 (2021.01); C08G 2110/005 (2021.01); C08G 2110/0058 (2021.01)] 19 Claims
 
1. A polyurethane elastomer memory foam composition comprising an organic diisocyanate, a chain extender, a polyurethane crosslinker, a plasticizer, a surfactant, a foaming agent, and a polyester resin, the polyester resin being a random copolymer having randomly distributed subunits of formula 1

OG Complex Work Unit Chemistry
where:
each R is independently selected from the group consisting of ethylene, octylene, and decylene,
a is from about 1 to about 99 mole % of the polyester resin,
b is from about 1 to about 99 mole % of the polyester resin,
c is from about 0.1 to about 10 mole % of the polyester resin, and
a+b+c=100 mole % of the polyester resin,
wherein the polyurethane crosslinker provides crosslinking of the resulting polyurethane elastomer.