Photosetting impression materials

Details Photosetting impression materials Photosetting impression materials

1991-05-28

1993-01-12

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

106 35, 106 382, C08G 1830

Patent

active

051791862

ABSTRACT:
A 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.

REFERENCES:
patent: 3891523 (1975-06-01), Hisamatsu et al.

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