发明名称 |
ORGANIC-INORGANIC COMPOSITE FILLER, AND METHOD FOR PRODUCING SAME |
摘要 |
The present invention discloses an organic-inorganic composite filler that contains: inorganic aggregate particles formed by aggregation of inorganic primary particles with an average particle diameter of 10 to 1000 nm; an organic resin phase including a cured polymer of a polymerizable monomer covering surfaces of the inorganic primary particles and bonding the inorganic primary particles to each other, and a water absorbing resin; and aggregation gaps with a volume of micropores formed between parts of the organic resin phase of 0.01 to 0.30 cm 3 /g in pore volume measurement within a pore diameter range of 1 to 500 nm, as measured by a mercury intrusion technique. In a cross section passing through the centers of the inorganic aggregate particles, based on 100 measured inorganic particles, there are 10 or less inorganic aggregate particles having a macro void with a maximum width of at least 1 µm. The present invention also discloses a method for producing the organic-inorganic composite filler. |
申请公布号 |
EP2757112(A4) |
申请公布日期 |
2015.05.13 |
申请号 |
EP20120831631 |
申请日期 |
2012.09.13 |
申请人 |
TOKUYAMA DENTAL CORPORATION |
发明人 |
YAMAZAKI, TATSUYA;AKIZUMI, HIRONOBU |
分类号 |
C08F2/44;A61K6/083;C08F292/00;C08K9/04;C08L101/00 |
主分类号 |
C08F2/44 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|