DENTAL COMPOSITIONS COMPRISING ETHYLENICALLY UNSATURATED ADDITION-FRAGMENTATION AGENT
    6.
    发明申请
    DENTAL COMPOSITIONS COMPRISING ETHYLENICALLY UNSATURATED ADDITION-FRAGMENTATION AGENT 审中-公开
    包含乙烯不饱和添加剂分散剂的牙科组合物

    公开(公告)号:WO2012112350A2

    公开(公告)日:2012-08-23

    申请号:PCT/US2012024222

    申请日:2012-02-08

    CPC classification number: A61K6/083 A61K6/0023 A61K6/0029 A61K6/005 C08L33/10

    Abstract: Dental compositions are described comprising an addition-fragmentation agent comprising at least one ethylenically unsaturated terminal group and a backbone unit comprising an a, ß- unsaturated carbonyl; at least one monomer comprising at least two ethylenically unsaturated group; and inorganic oxide filler. The addition-fragmentation agent is preferably free-radically cleavable. The addition-fragmentation agent preferably comprises at least two ethylenically unsaturated terminal groups, such as (meth)acrylate groups. In some embodiments, the addition-fragmentation agent has the formula (I) wherein R1, R2 and R3 are each independently Zm-Q-, a (hetero)alkyl group or a (hetero)aryl group with the proviso that at least one of R1, R2 and R3 is Zm-Q-; Q is a linking group have a valence of m +1; Z is an ethylenically unsaturated polymerizable group; m is 1 to 6; each X1 is independently -O- or -NR4-, where R4 is H or C1-C4 alkyl; and n is 0 or 1. Also described are dental articles prepared from a dental composition comprising an addition-fragmentation agent and methods of treating a tooth surface are described.

    Abstract translation: 描述了牙科组合物,其包含包含至少一个烯键式不饱和端基的加成断裂剂和包含α,β-不饱和羰基的主链单元; 至少一种包含至少两个烯属不饱和基团的单体; 和无机氧化物填料。 加成裂解剂优选是可自由基切割的。 加成断裂剂优选包含至少两个烯键式不饱和端基,例如(甲基)丙烯酸酯基团。 在一些实施方案中,加成断裂剂具有式(I),其中R 1,R 2和R 3各自独立地为Z m-Q-,(杂)烷基或(杂)芳基,条件是至少一个 R1,R2和R3是Zm-Q-; Q是连接基团,其价态为m + 1; Z是烯属不饱和可聚合基团; m为1〜6; 每个X 1独立地是-O-或-NR 4 - ,其中R 4是H或C 1 -C 4烷基; 并且n为0或1.还描述了由包含加成碎裂剂的牙科组合物制备的牙科用品和治疗牙齿表面的方法。

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