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:
Jan. 24, 2017
Filed:
Nov. 11, 2013
Christopher Barner-kowollik, Stutensee, DE;
Kim Klaus Oehlenschlaeger, Hockenheim, DE;
Stefan Hilf, Singapore, SG;
Friedrich Georg Schmidt, Haltern am See, DE;
Nathalie Guimard, Zurich, CH;
Jan Mueller, Lorsch, DE;
Christopher Barner-Kowollik, Stutensee, DE;
Kim Klaus Oehlenschlaeger, Hockenheim, DE;
Stefan Hilf, Singapore, SG;
Friedrich Georg Schmidt, Haltern am See, DE;
Nathalie Guimard, Zurich, CH;
Jan Mueller, Lorsch, DE;
EVONIK ROEHM GmbH, Darmstadt, DE;
Abstract
A method for the reversible crosslinking of, for example, adhesives or coating materials, and a composition stable on storage at room temperature for implementing the crosslinking reaction. The reversible crosslinking method allows very rapid crosslinking even at a low first temperature, and undoing of the crosslinks at higher temperatures, thereby recovering thermoplastic processability and, for example, allowing the originally bonded substrates to be parted from one another again easily. A particular aspect is that a plurality of cycles of crosslinking and undoing of the crosslinks are possible with the present system. A feature of the system used for the reversible crosslinking is that it contains two components, A and B, where component A is a compound having at least two protected dithioester functionalities, preferably cyanodithioester functionalities, and component B is a compound having at least two diene functionalities.