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US 2026/0022201 A1Published application
Polyurethanes, Polishing Articles and Polishing Systems Therefrom and Method of Use Thereof
Assignee3M Innovative Properties Company
InventorsJoseph D. Rule, David P. Siglin, Jay M. Jennen, Jaimie E. Stomberg, Duy K. Lehuu
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Abstract
Polyurethanes and polishing articles made therefrom including a reaction product of a reactive mixture including a polyol, a diol chain extender, a diisocyanate, a mono-alcohol, and a multifunctional amine are described. The mole ratio of isocyanate groups to hydroxyl groups in the reactive mixture is 0.98 or greater. Such polyurethanes may remain stable even at extended exposure to elevated reactive extrusion temperatures.
Claims15
A polyurethane comprising a reaction product of a reactive mixture including.
- a polyol;
- a diol chain extender;
- a diisocyanate;
- a mono-alcohol;
- and
- a multifunctional amine according to at least one of Formula I and Formula II
- wherein,
- X is an integer from 0 to 10, inclusive of the endpoints,
- R1 is a linear or branched aliphatic group, cyclic aliphatic group, aromatic group or a compound containing an aromatic group having from 2 to 20 carbon atoms,
- R2 is a linear or branched alkyl group having from 1 to 20 carbon atoms,
- R2′ is hydrogen or a linear or branched alkyl group having from 1 to 20 carbon atoms;
- and
- wherein the mole ratio of isocyanate groups to hydroxyl groups in the reactive mixture is 0.98 or greater.
10 more elements
Dependencies are inferred from the claim text.