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US 10,781,282 B2Granted
Flame retardant polyol
AssigneeDow Global Technologies LLC
InventorsBeilei Wang, Yi Zhang, Hongyu Chen, Renhua Fan, Min Yang
Life of this patent
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Abstract
A reaction system, such as for forming a rigid polyurethane foam, includes a flame retardant polyol that is a brominated reaction product of a cardanol component, a bromine component, and an additive component. The cardanol component includes at least 80 wt % of cardanol, based on the total weight of the cardanol component, and the bromine component including at least 80 wt % of bromine, based on the total weight of the bromine component.
Claims10
A reaction system, comprising:
- a flame retardant polyol that is a brominated reaction product of a cardanol component, a bromine component, and an additive component, the cardanol component including at least 80 wt % of cardanol, based on the total weight of the cardanol component, and the bromine component including at least 80 wt % of bromine, based on the total weight of the bromine component, wherein the additive component includes an aminoalcohol and at least one selected from an aldehyde and a ketone, wherein the flame retardant polyol is a flame retardant cardanol modified brominated polyol that is formed through two stages that include:
- (1) preparing a Cardanol Mannich Base Polyol by using a decarboxylated cashew nutshell liquid, diethanolamine, and formaldehyde via Mannich reaction;
- and
- (2) brominating the Cardanol Mannich Base Polyol to form the flame retardant cardanol modified brominated polyol.
1 more element
Dependencies are inferred from the claim text.