Semicrystalline pulverulent polyarylethersulfones and method to make them

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12209200
APP PUB NO 20220251416A1
SERIAL NO

17583671

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Abstract

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A semicrystalline polyarylethersulfone (PAES) useful for additive manufacturing may be made by a method comprising: dissolving an amorphous polyarylethersulfone in a polar aprotic halogenated hydrocarbon solvent at a temperature adequate to effectively form a solution, and subsequently and spontaneously bring about reprecipitation of a semicrystalline polyarylethersulfone from the solution. The semicrystalline polyarylethersulfone may have a crystallinity of at least 30% by weight. The semicrystalline PAES, upon being heated, melting and uniting together in layers during additive manufacturing cools without substantially recrystallizing, allows for deformation-free articles to be formed having low residual stress.

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Patent Owner(s)

Patent OwnerAddress
LUMAS POLYMERS LLC1064 ROSEMARY CIR CHASKA MN 55318

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eue, John Gordon St. Louis Park, US 3 2
Gardner, Thomas George Chanhassen, US 5 3

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