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US 9,284,402 B2Granted
High molecular weight castor oil-based polyols and uses thereof
AssigneeVertellus Specialties Inc.
InventorsWilliam J. Downey, Haibin Yu, Christofer S. Megson
Life of this patent
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Abstract
Castor oil-based polyol polymer compositions and their use in processes for preparing polyurethane compounds with modified properties (e.g. tensile strength, hydrolytic stability, and the like) are described.
Claims43
A polymer polyol comprising:
- a castor oil-based polyol derived from polymerization by esterification of castor oil and a fatty acid comprising at least one hydroxyl group, the castor oil-based polyol having a molecular weight greater than 900 Da and a hydroxyl value below 130 mg KOH/g;
- and
- a hydrocarbon polyol selected from a compound having a two carbon to six carbon straight or branched chain aliphatic hydrocarbon with at least two hydroxyl groups or a polymer consisting of from 1 to 100 monomeric units and at least two hydroxyl groups, where the monomeric unit is a two carbon to six carbon straight or branched chain hydrocarbon.
Dependencies are inferred from the claim text.