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    • 2. 发明授权
    • Composite materials having a low shrinkage force
    • 具有低收缩力的复合材料
    • US07601767B2
    • 2009-10-13
    • US11408534
    • 2006-04-21
    • Klaus RuppertAndreas GrundlerKurt ReischlMichael EckAlfred HohmannChristine Diefenbach
    • Klaus RuppertAndreas GrundlerKurt ReischlMichael EckAlfred HohmannChristine Diefenbach
    • A61K6/083A61K6/09C08K3/40A61C5/00
    • A61K6/083A61K6/0091A61K6/09C08L75/16C08L33/00
    • For composite materials having a total filler content of 80 to 95% by weight, containing A) 0.5 to 10% by weight of non-agglomerated nanofillers having particle sizes of 1 to 50 nm in the filler component, B) at least 60% by weight of a filler mixture of 50 to 90% coarse-particle and 10 to 50% fine-particle dental glass in the filler component, having a size ratio, relative to the average particle size (d50 value), of coarse to fine particles of >1:4 to 1:30, C) as monomer component, a monomer mixture of i. 60 to 80% bis-GMA or TCD-di-HEMA or TCD-di-HEA, ii. 10 to 18% UDMA, iii. Residual TEDMA and/or multifunctional crosslinkers, D) up to 1% photoinitiator(s); and E) optionally, at least one additional dental glass in the filler component having a different particle size than the coarse- and fine-particle dental glass, the polymerization shrinkage may be reduced to
    • 对于总填料含量为80〜95重量%的复合材料,含有A)0.5〜10重量%的填料组分中粒径为1〜50nm的非凝聚型纳米填料,B)至少60% 填料组分中含有50〜90%粗颗粒和10〜50%微细牙科玻璃的填料混合物的重量比,相对于平均粒径(d50值),粗粉与 > 1:4〜1:30,C)作为单体成分, 60至80%的双-GMA或TCD-di-HEMA或TCD-di-HEA,ii。 10至18%UDMA,iii。 残余TEDMA和/或多官能交联剂,D)高达1%的光引发剂; 和E)任选地,填料组分中至少一种另外的牙科玻璃具有与粗细微粒牙科玻璃不同的粒度,聚合收缩率可以降低至<1.6体积%(根据粘合的圆盘 方法;牙科材料(2004)20,88-95),并且收缩力(根据光弹性方法测量;牙科材料(2004)20,313-321)可以降低至<3.5MPa(聚合后24小时测量 )。