Aromatic polysulfone copolymers
AssigneeHt Materials Corporation
InventorYiFeng Wang
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Abstract
Compositions and methods for aromatic polysulfone copolymers are described herein. The polysulfone copolymers have advantageous properties, particularly in terms of high glass transition temperatures (Tg), improved thermal stability, improved flame resistance, good mechanical properties, chemical resistance and dimensional stability at elevated temperature. The polysulfone copolymers are suitable for manufacturing high temperature molded systems and other articles of manufacture via injection molding, extrusion, compression molding, coating, blow molding, thermoforming, rotational molding and additive manufacturing.
Claims18
A polymeric composition comprising a copolymer having the structure
- wherein R1 is a divalent radical selected from the group consisting of:
- wherein R2 is a divalent radical selected from the group consisting of:
- wherein
- w is 1 to 5000,
- x is 1 to 5000,
- y is 0 to 5000,
- z is 1 to 5000, and
- wherein a ratio of (w+x):(y+z) ranges from 99:1 to 1:99;
- wherein the copolymer is made by a method comprising:
- reacting 2H-benzimidazol-2-one with bis(4-chlorophenyl)sulfone to provide a sulfone oligomer;
- reacting the sulfone oligomer with a difluoro aromatic ketone of the formula
- to provide a fluoro aromatic ketone-terminated sulfone oligomer;
- and
- reacting the fluoro aromatic ketone-terminated sulfone oligomer with a bisphenol of the formula
- to provide the copolymer.
Dependencies are inferred from the claim text.