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:
Oct. 13, 2020
Filed:
Dec. 21, 2016
Sika Technology Ag, Baar, CH;
SIKA TECHNOLOGY AG, Baar, CH;
Abstract
Solvent-free polyurethane hot melt adhesives which can be obtained by reacting a composition including a polyether polyol, a polyester polyol, at least one poly(meth)acrylate, and one or more fillers, selected from kaolin, fumed silica, soot, and wollastonite, with a polyisocyanate. In comparison to similar adhesives without a filler content, the adhesives are characterized by significantly improved heat resistance properties while the remaining properties are comparable. Furthermore, in some cases, improved mechanical properties, such as an improved tear strength, could be observed by adding the fillers. The aforementioned hot melt adhesive compositions are therefore suitable in particular for applications in automotive construction, in the textile industry, and in the packaging industry, and in particular for adhering sandwich panels.