Invention Grant
- Patent Title: Powder coating extrusion process using liquid
- Patent Title (中): 粉末涂料挤出工艺使用液体
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Application No.: US12678076Application Date: 2008-09-11
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Publication No.: US08377346B2Publication Date: 2013-02-19
- Inventor: Andrew Robert Morgan , Stephen Raymond Wilburn , Edward Clark
- Applicant: Andrew Robert Morgan , Stephen Raymond Wilburn , Edward Clark
- Applicant Address: NL Arnhem
- Assignee: Akzo Nobel Coatings International B.V.
- Current Assignee: Akzo Nobel Coatings International B.V.
- Current Assignee Address: NL Arnhem
- Agency: Kenyon & Kenyon LLP
- Priority: EP07116489 20070914
- International Application: PCT/EP2008/062012 WO 20080911
- International Announcement: WO2009/034112 WO 20090319
- Main IPC: B29B9/00
- IPC: B29B9/00

Abstract:
A process for the manufacture of a powder coating comprising the steps of: Preparing a powder coating premix comprising a resin and optionally a crosslinker therefor; Feeding the premix through a melt extruder; Cooling the extruded material; and Comminuting it to fine particles, wherein said process is characterized in that between 1 and 25 wt. % (based on the weight of said premix) of a process liquid is added to the melt extruder, wherein said process liquid is immiscible with at least said resin of the powder coating premix and wherein said process liquid evaporates when the premix leaves the extruder.
Public/Granted literature
- US20100305268A1 POWDER COATING EXTRUSION PROCESS USING LIQUID Public/Granted day:2010-12-02
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