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:
Apr. 14, 2009
Filed:
Feb. 03, 2003
Edwin Nun, Billerbeck, DE;
Markus Oles, Hattingen, DE;
Edwin Nun, Billerbeck, DE;
Markus Oles, Hattingen, DE;
Degussa AG, Düsseldorf, DE;
Abstract
The invention relates to mold-release agents, in particular mold-release agents which can be used for demolding moldings from molding tools, and also to the use of these mold-release agents. The mold-release agents of the invention, which are preferably based on suspensions of nanostructured microparticles, have the advantage of being markedly more environmentally compatible than the known mold-release agents based on organic or organosilicon compounds, since they can remain on the surfaces of the moldings. The use of the mold-release agents of the invention is very simple, since advantage can be taken of existing equipment. An example of a usual method is to produce injection moldings by means of injection molds into which the material is injected. The mold-release agent of the invention is applied, e.g. by spray-application, to the injection mold prior to the actual injection-molding process. Depending on the setting of the molding parameters, the microparticles are impressed into the surfaces of the moldings and anchored, and therefore another favorable effect is that the surfaces of the injection molding can have self-cleaning properties.