Partially ester-exchanged SIPM and process therewith

   
   

A process for producing a partially ester-exchanged SIPM such as an alkali metal bis(2-hydroxyethyl) 5-sulfoisophthalate produced from an alkali metal dimethyl 5-sulfoisophthalate in an alcohol is disclosed. The partially ester-exchanged SIPM in an alcohol can be used to copolymerize with oligomer of terephthalic acid or dimethyl terephthalate and an alcohol. Also disclosed is a process for controlling the color of a dyeable polyester using a phosphorous compound.

Un proceso para producir un SIPM parcialmente e'ster-intercambiado tal como bis(2-hydroxyethyl) un 5-sulfoisophthalate alcalino-metálico producido de un 5-sulfoisophthalate dimethyl alcalino-metálico en un alcohol se divulga. El SIPM parcialmente e'ster-intercambiado en un alcohol se puede utilizar copolymerize con el oligomer del ácido terephthalic o terephthalate dimethyl y un alcohol. También se divulga un proceso para controlar el color de un poliester dyeable usando un compuesto phosphorous.

 
Web www.patentalert.com

< Nitrogen transport metabolism

< Processes for producing very low IV polyester resin

> Process for preparing 2,5-diformylfuran from carbohydrates

> Catalytic equilibration to increase the relative mole fraction of CF3CHCI, CF3CHCI2 or CF3CF2H in a composition

~ 00104