Patent ID: 7560500

Claim:
An uncured dental composite material comprising: (i) a composition comprising at least one compound of the Formula I: E 1 —R 1 n —O—R 2 —Q—R 3 —O—R 4 m —E 2 I wherein: Q is selected from the group consisting of: (a) a carbocyclic ring containing 5 or 6 carbon atoms with up to 3 C 1-3 alkyl substituents on the ring; (b) S—R 5 —T wherein S and T are each independently carbocyclic rings containing 5 or 6 carbon atoms with up to 3 C 1-3 alkyl substituents on the ring, and R 5 is a covalent bond or an alkylene group containing 1, 2, 3 or 4 carbon atoms; and (c) a carbocyclic fused ring system containing two fused rings containing a total of 8 to 10 carbon atoms with up to 4 C 1-3 alkyl substituents on the fused ring system; R 2 and R 3 are each independently selected from the group consisting of a covalent bond and an alkylene group containing 1, 2, 3, or 4 carbon atoms; R 1 is a repeat unit of the formula R 4 is a repeat unit of the formula E 1 and E 2 are each independently wherein R 6 is H (acryloyl) or CH 3 (methacryloyl); and n and m are each independently an integer greater than 0; a is independently an integer from 3 to 6; a′ is independently an integer from 3 to 6; and provided that neither R 2 nor R 3 is a covalent bond bonded directly to an aromatic ring; and provided that the degree of polymerization of the at least one compound is between 2 and 30; (ii) at least one compound of the Formula II wherein: each R 7 is independently hydrogen or methyl; each R 8 is an alkylene having 2 to 14 carbon atoms, or an alkenylene having 2 to 8 carbon atoms, or a divalent alicyclic hydrocarbon having 5 to 14 carbon atoms, or a phenylene, which is optionally substituted with halogen or an alkyl group having 1 to 5 carbon atoms; each R 9 is independently selected from the group consisting of hydrogen, acetyl, methyl, ethyl, C 3-6 linear alkyl, C 3-6 branched alkyl, and benzyl; R 10 is independently selected from the group consisting of hydrogen, methyl, ethyl, C 3-6 linear alkyl, C 3-6 branched alkyl, phenyl, and benzyl; and each A is a repeating unit of the formula: wherein: each R 11 is independently an alkylene having 2 or 3 carbon atoms, each R 12 is independently an alkylene having 2 to 7 carbon atoms, each R 13 is independently an alkylene having 2 to 5 carbon atoms, p is an integer of 1 to 10, and q is an integer of 1 to 10; (iii) at least one polymerization initiator compound; and (iv) at least one filler.