Photosetting resin for making strong, tough resin articles
AssigneeJapan Institute of Advanced Dentistry
InventorsEiichi Masuhara, Shigeo Komiya, Takeyuki Sawamoto
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Abstract
A photosetting resin comprising a liquid monomer composition and a photopolymerization initiator, the monomer composition containing a compound represented by the following formula (1) and a compound represented by the following formula (2) in a weight ratio within the range from 97:3 to 50:50: ##STR1## (wherein R.sub.1 is H or CH.sub.3, and 0.ltoreq.m.sub.1 +m.sub.2 .ltoreq.4) ##STR2## (wherein R.sub.2 is H or CH.sub.3, and 5.ltoreq.n.sub.1 +n.sub.2 .ltoreq.12). This photosetting resin can provide a cured resin which is excellent in both strength and toughness.
Claims3
A photosetting resin comprising a liquid monomer composition and a photopolymerization initiator, said resin when cured having a minimum value of flexural breaking strain energy per volume of at least 0.14 kg f mm/mm.sup.3, said monomer composition containing a compound represented by the following formula (1) and a compound represented by the following formula (2) in a weight ratio within a range of from 90:10 to 66:34:
- ##STR4## (wherein R.sub.1 is H or CH.sub.3, and 0.ltoreq.m.sub.1 +m.sub.2 .ltoreq.4) ##STR5## (wherein R.sub.2 is H or CH.sub.3, and 5.ltoreq.n.sub.1 +n.sub.2 .ltoreq.12).
Dependencies are inferred from the claim text.