| 发明名称 |
METHOD FOR PRODUCING METHACRYLIC RESIN FOR OPTICAL FILM |
| 摘要 |
The present invention can provide a methacrylic resin which has excellent transparency and color and less defects such as fish eyes and thus suitable for optical films by adding (A) a polymeric dispersant represented by formula (1) below and (B) an inorganic salt and/or organic salt selected from alkali metal salts, alkaline earth metal salts and ammonium salts when methyl methacrylate alone or a monomer mixture containing methyl methacrylate as one component is subjected to suspension-polymerization:;;(n=10 to 60 mol %, m=40 to 90 mol %, R1 is hydrogen or a methyl group, R2 is an alkyl group having 1 to 8 carbon atoms, and M is an alkali metal or alkaline earth metal or NH4.) |
| 申请公布号 |
US2014316090(A1) |
申请公布日期 |
2014.10.23 |
| 申请号 |
US201214360010 |
申请日期 |
2012.11.06 |
| 申请人 |
Jx Nippon Oil & Energy Corporation ;Keio University |
发明人 |
Uchizawa Sayako;Matsuo Akira;Matsumura Yasuo;Komata Ayumu |
| 分类号 |
G02B1/04 |
主分类号 |
G02B1/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for producing a methacrylic resin for an optical film, comprising adding (A) a polymeric dispersant represented by formula (1) below and (B) an inorganic salt and/or organic salt selected from alkali metal salts, alkaline earth metal salts and ammonium salts when methyl methacrylate alone or a monomer mixture containing methyl methacrylate as one component is subjected to suspension-polymerization:(n=10 to 60 mol %, m=40 to 90 mol %, R1 is hydrogen or a methyl group, R2 is an alkyl group having 1 to 8 carbon atoms, and M is an alkali metal or alkaline earth metal or NH4.) |
| 地址 |
Tokyo JP |
