Poly(arylene sulfide)s and preparation thereof

Details Poly(arylene sulfide)s and preparation thereof Poly(arylene sulfide)s and preparation thereof

C - Chemistry, Metallurgy

08

G

400/2019

C08G 75/02 (2006.01)

Patent

CA 1336729

Improved poly(arylene sulfide) copolymers of meta- and para- dihaloaromatic monomers are prepared by separately reacting the meta- and para- dihaloaromatic monomers with the sulfur source under polymerization conditions. Preferably, the meta-dihaloaromatic monomer is reacted under polymerization conditions prior to the addition of the para-dihaloaromatic monomer. This method avoids the problem of sluggish meta-dihaloaromatic monomer reactivity and produces poly(arylene sulfide) copolymers of reduced melt flow and/or improved polymer quality when compared to poly(arylene sulfide) copolymers prepared by contacting both the meta- and para- dihaloaromatic monomers together initially.

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