FILM AND FIBER FORMING COPOLYESTERS

Polyesters, suitable for the manufacture of films and fibres, are made by reacting together (a) terephthalic acid or an alkyl ester thereof, (b) a polymethylene glycol, preferably containing 2-6 carbon atoms and (c) an ether glycol of formula HOCH2-CH2-X-CH2-CH2OH where X represents a chain of 3-16...

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Bibliographic Details
Main Authors HERBERT FITZ, WALTER SEIFRIED
Format Patent
LanguageEnglish
Published 21.01.1969
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Polyesters, suitable for the manufacture of films and fibres, are made by reacting together (a) terephthalic acid or an alkyl ester thereof, (b) a polymethylene glycol, preferably containing 2-6 carbon atoms and (c) an ether glycol of formula HOCH2-CH2-X-CH2-CH2OH where X represents a chain of 3-16 atoms of which 1-3 are ether oxygen atoms and the remainder are carbon atoms, the remaining valencies of the carbon atoms being attached to hydrogen atoms and, when two or three oxygen atoms are present, these atoms are separated from one another by at least three intervening carbon atoms. Examples describe the reaction of dimethyl terephthalate, ethylene glycol and di-n-butylene glycol or di-n-hexylene glycol.
Bibliography:Application Number: USD3423370