ApplicationNo. 706128 filed on 05/28/1991
US Classes:528/49, Material contains only one -C-XH,-C-C(=X)-XH or carbon to -NH or HNH group106/35, Dental106/38.2Molds and mold coating compositions
ExaminersPrimary: Welsh, Maurice J.
Attorney, Agent or Firm
Foreign Patent References
International ClassC08G 018/30
Foreign Application Priority Data1990-06-07 DE
AbstractA method of making a dental impression which comprises applying to the structure of which an impression is to be made a special prepolymer. The prepolymer is composed of units of at least one macrodiol, at least one aliphatic polyisocyanate, and an unsaturated monoalcohol as chain terminator, wherein the average functionality of the prepolymer based on the unsaturated groups is >2.