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:
Feb. 19, 2019
Filed:
May. 26, 2014
Metsä Fibre Oy, Metsä, FI;
Stora Enso Oyj, Helsinki, FI;
Alistair W. T. King, University of Helsinki, FI;
Christoph Selg, University of Helsinki, FI;
Pirkko Karhunen, University of Helsinki, FI;
Jorma Matikainen, University of Helsinki, FI;
Ilkka Kilpeläinen, University of Helsinki, FI;
Metsa Fibre Oy, Metsa, FI;
Stora Enso Oyj, Helsinki, FI;
Abstract
A method of modifying a polymer having hydroxyl groups, selected from the group of polysaccharides and lignin, to give a modified polymer comprising the step of contacting said polymer with at least one organic phosphonate salt in order to chemically modify the polymer, said organic phosphonate salt being in a liquid phase. The method of polymer modification provides novel polymers. Modified polymers obtained from a polymer having been treated with at least one organic phosphonate salt are also disclosed. The modified polymers can be used as such or separated and optionally recovered from the solution, optionally being formed into particular materials or shapes.