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公开(公告)号:US20210395458A1
公开(公告)日:2021-12-23
申请号:US17279868
申请日:2019-09-30
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.