Fibers of acid-dyeable polyester having tetramethylpiperidine groups
申请人:E. I. Du Pont de Nemours and Company
公开号:US04001189A1
公开(公告)日:1977-01-04
Textile fibers or filaments prepared from polyesters modified with a minor proportion of 2,2,6,6-tetramethylpiperidine groups attached through oxyalkylene linkages to ends of linear polyester polymer chains have improved dyeability with acid dyes. A variety of alkylene oxide condensates of tetramethylpiperidine compounds are shown to have adequate heat-stability and compatibility for incorporating in polyesters under conditions of condensation polymerization to form desirable products.
Method for producing fluorinated copolymer solution, and coating composition
申请人:AGC Inc.
公开号:US10472535B2
公开(公告)日:2019-11-12
A method for producing a fluorinated copolymer solution polymerizing a monomer mixture of a fluoro-olefin (A), a monomer (B) having a crosslinkable group and a monomer (C) having no fluorine atom and no crosslinkable group in the presence of an organic solvent and a compound having two or more piperidyl group represented by the formula (1):