公开(公告)号：US20210395458A1

公开(公告)日：2021-12-23

申请号：US17279868

申请日：2019-09-30

申请人： KANEKA AMERICAS HOLDING, INC.

发明人： Paul MELONI ,  Haibin ZHENG

IPC分类号： C08G73/10 ,  C09D5/03 ,  C09D179/08 ,  C09D7/20 ,  H01B3/30

摘要： The present invention discloses a polyamic acid resin composition in a REACH-approved solvent system for use in wire coating applications. The polyamic acid resin composition comprises a molecular weight greater than 8,000 grams per mole, more preferably greater than 20,000 grams per mole. The REACH-approved solvent system comprising a primary REACHapproved solvent with one or more optional secondary REACH-approved co-solvents. The secondary REACH-approved co-solvent can be reactive or non-reactive with dianhydride. The present invention also discloses the elimination of solvents in polyamic acid resin to produce a REACH-approved polyamic acid resin powder.