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US 6,787,628 B2Granted
Polyether/polyurethane association thickeners
AssigneeAvecia Limited
InventorsDean Thetford, Stuart Barnett
Life of this patent
Estimating the term…
Abstract
A polymer comprising the addition reaction product of a polyisocyanate having a functionality of from 2 to 10 and a succinylpolyether having a C6-30-alk(en)yl group and at least one group which is capable of reacting with the polyisocyanate and where the number of recurring ethyleneoxy groups in the polyether is from 4 to 800.
Claims11
A polymer comprising the addition reaction product of a polyisocyanate having a functionality of from 2 to 10 and a succinylpolyether having a C6-30-alk(en)yl group and at least one group which is capable of reacting with the polyisocyanate.
Dependencies are inferred from the claim text.