POLYMERIZABLE TYPE II PHOTOINITIATORS AND CURABLE COMPOSITIONS
申请人:Loccufier Johan
公开号:US20110063388A1
公开(公告)日:2011-03-17
A polymerizable Type II photoinitiator according to Formula (I):
wherein:
A represents a Norrish Type II initiating group;
L represents a divalent linking group positioning the Norrish Type II initiating group A and the CR2R3-group in a 1-5 to a 1-8 position wherein position 1 is defined as the first atom in the aromatic or alicyclic ring of A to which L is covalently bonded and the position 5 to 8 is defined as the carbon atom of the CR2R3-group to which L is covalently bonded, with the proviso that L does not contain an amine. Radiation curable compositions and inks include the multifunctional Type II photoinitiator.
MULTIFUNCTIONAL TYPE II PHOTOINITIATORS AND CURABLE COMPOSITIONS
申请人:Loccufier Johan
公开号:US20110069130A1
公开(公告)日:2011-03-24
A multifunctional Type II photoinitiator according to Formula (I):
wherein X represents a structural moiety according to Formula (II):
wherein:
A represents a Norrish Type II initiating group; and L represents a divalent linking group positioning the Norrish Type II initiating group A and the CR2R3-group in a 1-5 to a 1-9 position wherein position 1 is defined as the first atom in the aromatic or alicyclic ring of A to which L is covalently bonded and the position 5 to 9 is defined as the carbon atom of the CR2R3-group to which L is covalently bonded, with the proviso that L does not contain an amine. Radiation curable compositions and inks include the multifunctional Type II photoinitiator.
Provided herein are composite materials comprising a thiol-ene polymer resin in a continuous phase and a filler in a discontinuous phase, the filler comprising fluorapatite crystals and silica. Further provided are methods of using these composite materials as restoratives in dental applications. This dental composite is labeled as “smart” because, when the shrinkage stress of the composite is greater than a programmable or pre-selected threshold level, it will elicit visual clues for the dentist.