High temperature semicrystalline poly(aryl ether ketone) copolymers
AssigneeHt Materials Corporation
InventorYiFeng Wang
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Abstract
Compositions and methods for a semicrystalline poly(aryl ether ketone) copolymers incorporating 2-benzimidazolinone and 4,4′-biphenol as comonomer units with 4,4′-dihalobenzophenone are described herein. The copolymers have advantageous properties, particularly in terms of high glass transition temperatures (Tg), high melting temperatures (Tm), crystallinity and chemical resistance. The copolymers are suitable for manufacturing high temperature and chemical resistance molded systems and other articles of manufacture via injection molding, extrusion, compression molding, coating, and additive manufacturing.
Claims11
A polymeric composition comprising a copolymer having two separate recurring units, a first recurring unit having the formula, formula I:
- and a second recurring unit having the formula, formula II:
- wherein the value of the subscript x ranges from 2 to 5000, subject to the limitation that the value of the subscript y ranges from 2 to 5000, the ratio of x:
- y ranges from 1:99 to 25:75;
- wherein said polymeric composition is semicrystalline having an inherent solution viscosity greater than 0.3 dL/g, a Tg greater than 180° C., a Tc less than 340° C., a Tm less than 400° C., and an enthalpy of melting endotherm (ΔHm) greater than 10 J/g and less than 55 J/g, wherein said semicrystalline copolymer crystallizes from a melt at a cooling rate of from 5° C./minute to about 200° C./minute.
Dependencies are inferred from the claim text.