申请人:The United States of America as represented by the Secretary of the Air
公开号:US04005142A1
公开(公告)日:1977-01-25
As new compositions of matter, 1,14-bis(3-amino-4-hydroxyphenyl)perfluoro-5,10-dimethyl-3,6,9,12-tetraoxa tetradecane and 1,17-bis(3-amino-4-hydroxyphenyl)perfluoro-3,6,9,15-tetraoxaheptadecane. The compounds are useful as monomers in synthesizing perfluoroalkylene ether bibenzoxazole polymers possessing thermooxidative stability and superior low temperature viscoelastic properties.