| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a low YI acrylic resin with a reduced content of foreign matter, to provide a composition of the same, and to provide a method for producing the composition. <P>SOLUTION: The method for producing the acrylic resin is characterized by mixing an additive in an extruder which has been used for the polymerization of the monomer of the acrylic resin or the devolatization of the resin. Thus, the step for production of the acrylic resin can prevent the contact of the inside of the production apparatus with oxygen in the outside environment, and the thermal history to the acrylic resin is small. The present invention can provide an acrylic resin having 5 or less YI in 15 wt.% chloroform solution and containing 100 pieces or less of foreign matter having a particle size of 20μm or more in one gram of the resin. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
