Dentistry – Prosthodontics – Impression taking or bite determination
Patent
1986-11-26
1989-03-21
Ivy, C. Warren
Dentistry
Prosthodontics
Impression taking or bite determination
523109, 528 69, 264 16, 525920, 526301, 522 27, 522 28, 522 77, 522 79, 522 97, 522908, A61C 900
Patent
active
048138754
ABSTRACT:
Disclosed is a new urethane polyacrylate having at least one terminal isocyanato acrylic pendent radical. Preferably the molecular chain within the acrylate caps has been extended with a polyhydroxy compound just before final end capping with isocyanato acrylic. The isocyanato acrylic is preferably isocyanato ethyl methacrylate and the urethane is diisocyanate capped polyether and the polyether radical is oxyalkylene. The method for producing the urethane polyacrylate involves end capping a polyol with diisocyanate yielding a reaction product with two reactive equivalents of isocyanate and then capping less than all of the isocyanate with a hydroxyacrylate, after which the remaining isocyanate is reacted with polyol to provide chain extension. The chain extending polyol is then capped with a isocyanato acrylic.
Also disclosed is a new impression material for application to mammalian tissue and curing in contact therewith, the impression material including a free radical polymerizable resin, alkyl benzensulfonyl titanate, polymerization initiator and filler and the method of use.
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Hanson, Jr. Edward J.
Ivy C. Warren
Wheeler David E.
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