公开(公告)号：US20200157299A1

公开(公告)日：2020-05-21

申请号：US16750164

申请日：2020-01-23

Applicant: Arkema Inc.

Inventor： Christophe ROGER ,  Manuel A. GARCIA-LEINER ,  Jean-Alex LAFFITTE ,  Julie BOYER ,  Stephan Moyses ,  Lawrence H. JUDOVITS

IPC: C08J5/18 ,  C08L71/00 ,  C08G65/00 ,  B29C39/00 ,  C08G65/46

Abstract: A method of manufacturing a film or membrane includes: (a) dissolving at least one polymer comprising a poly(aryl ketone) in at least one solvent to form a dope; (b) depositing the dope on a substrate to form a coated substrate at appropriate conditions; and (c) drying the coated substrate to form the film or membrane. The dope may also include additional polymers or fillers, such as carbon nanotubes.

公开(公告)号：US20210292544A1

公开(公告)日：2021-09-23

申请号：US17340420

申请日：2021-06-07

Applicant: Arkema Inc.

Inventor： Christopher A. BERTELO ,  Manuel A. GARCIA-LEINER ,  Anthony DECARMINE ,  Scott F. DEFELICE

IPC: C08L61/16 ,  B33Y70/00 ,  C08L71/00 ,  B29C64/153 ,  B29C39/08 ,  C08G8/02 ,  B29B15/00

Abstract: The invention relates to heat treatment of polymorphic semicrystalline or crystallizable polymers to increase the content of the highest melting crystalline form. Such heat treatment results in a polymer powder that has a consistent, uniform melting range, improved flow and improved durability of the powder particle size for applications that require powder flow at elevated temperatures. In addition to improved powder properties, the articles produced from the powders also exhibit better physical properties in both appearance and in mechanical properties. Thus the invention also includes polymer powders and articles produced by the described processes.