Modified 1,3-propanediol-based polyesters

Details Modified 1,3-propanediol-based polyesters Modified 1,3-propanediol-based polyesters

C - Chemistry, Metallurgy

08

G

C08G 63/20 (2006.01) C08K 5/134 (2006.01) C08L 67/02 (2006.01)

Patent

CA 2273332

A 1,3-propanediol-based aromatic polyester such as polytrimethylene terephthalate is modified by incorporation of a hindered phenol as a terminal group to provide an endcapped polyester which has improved resistance to generation of acrolein when heated in air.

Un polyester aromatique à base de 1,3-propanediol (un téréphtalate de polytriméthylène, par exemple) est modifié par réaction avec un phénol entravé pour obtenir un polyester à extrémité coiffée qui, chauffé à l'air, présente une résistance améliorée à la production d'acroléine.

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