公开(公告)号：US4906446A

公开(公告)日：1990-03-06

申请号：US162240

申请日：1988-02-29

申请人： Jurgen Engelbrecht ,  Michael Gunther ,  Helmut von Wallis

发明人： Jurgen Engelbrecht ,  Michael Gunther ,  Helmut von Wallis

IPC分类号： C01B33/157 ,  A61K6/08 ,  A61K6/083 ,  C09C1/30 ,  C01B33/12

CPC分类号： A61K6/083 ,  A61K6/0002 ,  C09C1/309 ,  C01P2006/12

摘要： Silica gels of a mean grain size of about 0.5 to 50 .mu.m are subjected to a heat or acid treatment that considerably reduces their surface area and the volume of pores smaller than 50 nm, while maintaining approximately the same grain size distribution and amorphous structure. These products are colorless and can be worked into a resinous molding material in relatively large quantities, especially as a filler for dental materials based on polymerizable monomers, in particular mono-, di- or polyfunctional esters of acrylic or methacrylic acid. In the completely hardened condition, these materials have good mechanical characteristics, less polymerization shrinkage, very low thermal expansion coefficients, excellent transparency and tooth similarity resulting from the favorable refractive index of the filler, as well as very good ability to be polished and abrasion resistance.

摘要翻译： 对平均粒度约0.5-50μm的硅胶进行热处理或酸处理，可大大降低其表面积和小于50nm的孔的体积，同时保持大致相同的晶粒尺寸分布和无定形结构。 这些产品是无色的并且可以相对大量地加工成树脂成型材料，特别是作为基于可聚合单体的牙科材料的填料，特别是丙烯酸或甲基丙烯酸的单，二或多官能酯。 在完全硬化的条件下，这些材料具有良好的机械特性，较少的聚合收缩率，非常低的热膨胀系数，优异的透明性和由于填料的有利折射率导致的齿相似性以及极好的抛光和耐磨性能 。

公开(公告)号：US4806381A

公开(公告)日：1989-02-21

申请号：US916588

申请日：1986-10-08

申请人： Jurgen Engelbrecht ,  Helmut von Wallis ,  Michael Gunther

发明人： Jurgen Engelbrecht ,  Helmut von Wallis ,  Michael Gunther

IPC分类号： A61L24/00 ,  A61K6/00 ,  A61K6/08 ,  A61K6/083 ,  C08F8/00 ,  C08F20/10 ,  C08F20/18 ,  C08F22/00 ,  C08F22/36 ,  C08G85/00 ,  A01N1/02 ,  B05D3/02

CPC分类号： C08F8/00 ,  A61K6/0023 ,  A61K6/0088 ,  C08F8/28 ,  C08F8/40 ,  C08F8/42 ,  C08F2800/20 ,  C08F2810/30

摘要： Oligomeric or prepolymeric organic compounds that contain both polymerizable unsaturated groups and acid radicals, their salts, or their reactive-derivative radicals. The compounds exhibit outstanding adhesion properties, especially to biological substrates, and are appropriate for application as bonding agents, adhesive filling materials, or adhesive cements in the fields of dentistry and medicine.

摘要翻译： 含有可聚合不饱和基团和酸基团的低聚物或预聚物有机化合物，其盐或其反应性衍生物基团。 该化合物表现出优异的粘附性能，特别是生物基材，并且适用于作为粘合剂，粘合剂填充材料或牙科和医学领域的粘合剂粘合剂。