Polyurethane casting material
AssigneeJohnson & Johnson Products, Inc.
InventorHee K. Yoon
Life of this patent
Estimating the term…
Abstract
An improved polyurethane orthopaedic cast bandage is disclosed. The bandage is a polyurethane prepolymer coated on an open-weave, fibrous substrate. The prepolymer contains dimorpholinodiethylether as a catalyst which gives the cast bandage increased shelf stability and excellent set time.
Claims6
A storage-stable orthopaedic cast bandage comprising a water-activatable polyurethane prepolymer coated on an open-weave fibrous substrate, said prepolymer comprising an aromatic polyisocyanate and a polyol in an equivalent ratio of from 2:1 to 15:1 and containing from 0.1% to 10%, based on the weight of prepolymer, of dimorpholinodiethylether as a catalyst.
Dependencies are inferred from the claim text.