POLYURETHANES, POLISHING ARTICLES AND POLISHING SYSTEMS THEREFROM AND METHOD OF USE THEREOF

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...

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Bibliographische Detailangaben
Hauptverfasser:	STOMBERG, Jaimie E, LEHUU, Duy K, RULE, Joseph D, SIGLIN, David P, JENNEN, Jay M
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON DRESSING OR CONDITIONING OF ABRADING SURFACES FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GRINDING MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS POLISHING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING
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Beschreibung
Zusammenfassung:	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. L'invention concerne des polyuréthanes et des articles de polissage fabriqués à partir de ceux-ci comprenant un produit de réaction d'un mélange réactif comprenant un polyol, un allongeur de chaîne diol, un diisocyanate, un mono-alcool et une amine multifonctionnelle. Le rapport molaire des groupes isocyanates aux groupes hydroxyle dans le mélange réactif est supérieur ou égal à 0,98. De tels polyuréthanes peuvent rester stables même à une exposition prolongée à des températures d'extrusion réactives élevées.