发明授权
- 专利标题: Process for the cold molding of particulate materials
- 专利标题(中): 颗粒材料冷成型工艺
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申请号: US10354479申请日: 2003-01-30
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公开(公告)号: US06774161B2公开(公告)日: 2004-08-10
- 发明人: Abdulmajid Hashemzadeh , Klaus Kohlhammer , Thomas Lehmann , Peter Weiler
- 申请人: Abdulmajid Hashemzadeh , Klaus Kohlhammer , Thomas Lehmann , Peter Weiler
- 优先权: DE10206127 20020214
- 主分类号: C08J300
- IPC分类号: C08J300
摘要:
Particulate materials are cold molded by preheating a binder and the material to be bound to a temperature of from 160 to 240° C., and then press molding at a temperature less than 80° C. and at a pressure of from 1 to 120 bar to give a molding, wherein the binder contains a polymer powder or aqueous polymer dispersion thereof, the polymer having a glass transition temperature Tg greater than 80° C. and a complex viscosity less than 15,000 Pa·s at 190° C., and derived from one or more comonomer units from the group of vinyl esters of optionally branched C1-18 alkylcarboxylic acids, (meth)acrylic esters of optionally branched C1-15 alcohols, dienes, olefins, vinylaromatics, and vinyl halides. The moldings exhibit excellent properties including resistance to sagging at elevated temperatures, and are recyclable.
公开/授权文献
- US20030151158A1 Process for the cold molding of particulate materials 公开/授权日:2003-08-14
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