Invention Grant
- Patent Title: Method of producing fine particles of non-vinyl thermoplastic polymer
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Application No.: US15197903Application Date: 2016-06-30
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Publication No.: US10239970B2Publication Date: 2019-03-26
- Inventor: Itaru Asano , Yuji Echigo , Hiroshi Takezaki
- Applicant: Toray Industries, Inc.
- Applicant Address: JP
- Assignee: Toray Industries, Inc.
- Current Assignee: Toray Industries, Inc.
- Current Assignee Address: JP
- Agency: DLA Piper LLP (US)
- Priority: JP2008-132939 20080521; JP2008-132940 20080521; JP2009-029175 20090210
- Main IPC: C08J3/00
- IPC: C08J3/00 ; B32B5/16 ; C08F120/44 ; C08G75/23 ; C08J3/16 ; C08L55/02 ; C08L71/12 ; C08L81/06 ; C08G64/40 ; C08G65/46 ; C08G69/46 ; C08G73/10 ; C08L63/00 ; C08L77/00 ; C08F236/12 ; C08G63/88 ; C08G73/14 ; C08L29/04 ; C08L39/06

Abstract:
Fine polymer particles made by a method include producing an emulsion in a liquid prepared by dissolving and mixing a polymer A and a polymer B in organic solvents in which a solution phase composed primarily of the polymer A and a solution phase composed primarily of the polymer B are formed as separate phases, wherein the solvents in the two phases resulting from the phase separation are substantially identical to each other, and contacting the emulsion with a poor solvent for the polymer A to precipitate the polymer A, wherein the particles have a glass transition point of 150° C. or more and 400° C. or less, an average particle diameter of 1 μm or more to 100 μm or less, and a particle diameter distribution index of the particles is 2 or less, wherein the polymer A is nonvinyl type polymer.
Public/Granted literature
- US20160304714A1 METHOD OF PRODUCING POLMYER FINE PARTICLE Public/Granted day:2016-10-20
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