| 摘要 |
Dental composite comprising (i) a polymerizable composition obtainable by reacting a mixture comprising: (a) x equivalents of one or more compounds of the following formula (I), wherein U is an (l+1)-valent hydrocarbon group which may contain in its backbone 1 to 3 heteroatoms selected from oxygen atoms and sulfur atoms and which may be substituted by one or more hydroxyl groups or groups -COOL" wherein L" is a polymerizable moiety; I is an integer of from 1 to 3; (b) y equivalents of one or more compounds of the following formula (lla), (llb) and/or (llc), wherein n is an integer of from 1 to 3, Y may be present or absent, and when present represents a carbonyl group; Y' independently may be present or absent, represents a carbonyl group; Rm which may be the same or different represent 1 to 3 substituents selected from halogen atoms, alkyl groups, and alkoxy groups, or wherein two Rm form together with the carbon atoms of the ring to which they are bonded an annelated aromatic ring; and (c) z equivalents of one or more compounds of formula (III), wherein R1 is a hydrogen atom or an alkyl group; k is an integer of from 1 to 3, whereby when k is 1, 2 or 3, then L is a (k+1)-valent hydrocarbon group which may contain 1 to 3 heteroatoms selected from oxygen atoms and sulfur atoms, and X is a carboxylic acid group, or a hydroxyl group bonded to an aromatic ring forming part of L; or wherein 0.05 < x/y < 0.66, and (see formula (1)), wherein x, y, and z are the molar equivalents of components (a), (b) and (c) and (see formula 2) is the mean acid functionality of component (a), wherein I is as defined in formula (I); and optionally reacting the hydroxyl groups and/or carboxylic acid groups on L' of the reaction product of the mixture with a compound having a polymerizable double bond; and (ii) a particulate filler. |
