The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 2004
Filed:
Jan. 30, 2003
Abdulmajid Hashemzadeh, Burgkirchen, DE;
Klaus Kohlhammer, Marktl, DE;
Thomas Lehmann, Sinzing, DE;
Peter Weiler, Geretstried, DE;
Wacker Polymer Systems GmbH & Co. KG, Burghausen, DE;
Abstract
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 C alkylcarboxylic acids, (meth)acrylic esters of optionally branched C alcohols, dienes, olefins, vinylaromatics, and vinyl halides. The moldings exhibit excellent properties including resistance to sagging at elevated temperatures, and are recyclable.