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 |
US9097836(B2) |
申请公布日期 |
2015.08.04 |
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;C08F2/20;C08F220/06;C08F220/14 |
主分类号 |
G02B1/04 |
代理机构 |
Panitch Schwarze Bellisario & Nadel LLP |
代理人 |
Panitch Schwarze Bellisario & Nadel LLP |
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 |