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US 2025/0320340 A1Published application
Processes for producing filled polyol compositions
AssigneeCovestro LLC
InventorsRick L. Adkins, Brian L. Neal, Bin Lee
Life of this patent
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Abstract
Processes for producing filled polyol compositions, such as polymer polyol compositions. The processes include reacting a polymerizable composition in the presence of a composition comprising a base polyol and an amine antioxidant, in which the amine antioxidant comprises a secondary diarylamine, a primary aromatic amide, a triazole, or a combination thereof.
Claims18
1-20. (canceled)
A process for preparing a filled polyol comprising free-radically polymerizing a reaction mixture comprising:
- (a) a base polyol having a functionality of from about 2 to about 8 and a hydroxyl number of from about 10 to about 1000 mg KOH/g;
- (b) an amine antioxidant comprising a secondary diarylamine, a primary aromatic amide, a triazole, or a combination thereof;
- (c) at least one preformed stabilizer;
- (d) an ethylenically unsaturated monomer;
- (e) a free radical polymerization catalyst;
- and, optionally (f) a polymer control agent,
- wherein the at least one preformed stabilizer comprises the reaction product of a reaction mixture comprising:
- (c)(1) a macromer that contains reactive unsaturation and that is a reaction product of a reaction mixture comprising:
- (i) an H-functional starter having a functionality of 2 to 8 and a hydroxyl number of 20 to 50;
- (ii) from 0.1 to 3% by weight, based on 100% by weight of the sum of components (i), (ii) and (iii), of a hydroxyl-reactive compound that contains reactive unsaturation;
- and
- (iii) from 0 to 3% by weight, based on 100% by weight of the sum of components (i), (ii) and (iii), of a diisocyanate;
- (c)(2) an ethylenically unsaturated compound;
- (c)(3) a free radical initiator;
- (c)(4) a polymer control agent;
- and
- optionally,
- (c)(5) a chain transfer agent.
15 more elements
Dependencies are inferred from the claim text.