| 发明名称 |
STYRENE BASED RESIN COMPOSITION, FORMED PARTICLE THEREOF, AND OPTICAL ELEMENT |
| 摘要 |
A styrene based resin composition having a low linear thermal expansion coefficient and high formability, a formed article thereof, and an optical element made from the formed article are provided. The formed article is produced by forming a styrene based resin composition containing a styrene based resin and silica particles, wherein the number average particle diameter of primary particles of the silica particles is 0.5 nm or more and 40 nm or less, and the content of the silica particles is 40 percent by volume or more and 75 percent by volume or less relative to a total of the styrene based resin and the silica particles. |
| 申请公布号 |
US2014249258(A1) |
申请公布日期 |
2014.09.04 |
| 申请号 |
US201214349646 |
申请日期 |
2012.09.26 |
| 申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
Oishi Emi |
| 分类号 |
C08K9/04;G02B1/04;C08K9/02 |
主分类号 |
C08K9/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A formed article produced by forming a styrene based resin composition comprising a styrene based resin and silica particles,
wherein the number average particle diameter of primary particles of the silica particles is 0.5 nm or more and 40 nm or less, the content of the silica particles is 40 percent by volume or more and 75 percent by volume or less relative to a total of the styrene based resin and the silica particles, and wherein the silica particles have at least any one of silanol group, amino group and hexadecyl group on surfaces. |
| 地址 |
Tokyo JP |
