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US 12,195,574 B2Granted
Polymer polyol compositions and their use in the production of flexible polyurethane foams
AssigneeCovestro LLC
InventorsRick L. Adkins, Brian L. Neal, Andrew S. Frazee
Life of this patent
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Abstract
Disclosed are polymer polyol compositions that include an amino diphenylamine, optionally in combination with other antioxidants, such as phenolic antioxidants, as well the use of such polymer polyol compositions in the production of flexible polyurethane foams. The polyurethane foam includes a reaction product of a polyisocyanate component and an isocyanate-reactive component that includes the polymer polyol composition.
Claims20
A polymer polyol composition comprising a dispersion of polymer particles in a base polyol, wherein:
- (a) the polymer particles comprise at least one of:
- (1) a polymer comprising the free radical polymerization reaction product of an ethylenically unsaturated compound;
- (2) a polyisocyanate polyaddition polymer comprising the reaction product of a reaction mixture comprising an isocyanate and an alkanolamine;
- and
- (3) a polyhydrazodicarbonamide comprising the reaction product of a reaction mixture comprising an isocyanate and a diamine and/or a hydrazine, and
- (b) the polymer polyol composition further comprises an amine of the structure (I):
- in which R is an aryl radical, each R1 is independently hydrogen, a C1-C4 alkyl radical, or a C1-C4 alkoxy radical, each R2 is independently hydrogen or a C1-C4 alkyl radical, and each R3 is independently hydrogen, a C1-C4 alkyl radical, a C1-C4 alkoxy radical, or a radical of the formula:
- in which R4 is a C1-C12 alkyl radical, a C5-C12 cycloalkyl radical, a C6-C12 aryl radical, or a C7-C13 aralkyl radical, and R5 is hydrogen or a C1-C12 alkyl radical.
5 more elements
A polymer polyol composition comprising:
- (a) a base polyol having a functionality of 2 to 8 and a hydroxyl number of 20 to 400 mg KOH/g;
- and
- (b) polymer particles dispersed in the base polyol, the polymer particles comprising the reaction product of a reaction mixture comprising:
- (1) an ethylenically unsaturated compound;
- (2) a preformed stabilizer comprising the reaction product of a reaction mixture comprising:
- (3) a free radical initiator;
- and
- (c) an amine of the structure (I):
- in which R is an aryl radical, each R1 is independently hydrogen, a C1-C4 alkyl radical, or a C1-C4 alkoxy radical, each R2 is independently hydrogen or a C1-C4 alkyl radical, and each R3 is independently hydrogen, a C1-C4 alkyl radical, a C1-C4 alkoxy radical, or a radical of the formula:
- in which R4 is a C1-C12 alkyl radical, a C5-C12 cycloalkyl radical, a C6-C12 aryl radical, or a C7-C13 aralkyl radical, and R5 is hydrogen or a C1-C12 alkyl radical.
7 more elements
Dependencies are inferred from the claim text.