US 8,889,799 B2Granted

Functionalised polyurethanes

AssigneeRecticel

InventorsFilip Du Prez, David Fournier, Peter Spanhove

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Abstract

The present invention relates to a method for producing an isocyanate-based polymeric material by polymerizing a reaction mixture which comprises different reaction components, including at least one polyisocyanate component and at least one component which is reactive towards said polyisocyanate component. The reaction components comprise at least one anchor component which has at least one anchor group which enables to bond a functional component covalently to the polymeric material. The anchor group is a reactive unsaturated group which does not react during the polymerization process so that the polymerization process is not interfered. The anchor group is selected to that it can bind the functional component by a click chemistry reaction to the polymeric material. It is more particularly selected so that it can participate in a catalyzed Huisgen 1,3-dipolar cycloaddition reaction or in a Diels-Alder cycloaddition reaction The invention also relates to the obtained isocyanate-based polymeric material, to the use thereof to produce a functionalized polymeric material and to this functionalized polymeric material.

Claims16

Dependent claims

A method for producing a functionalised isocyanate-based polymeric material, wherein an isocyanate-based polymeric material is produced by polymerizing a reaction mixture which comprises different reaction components, including at least one polyisocyanate component which has at least two reactive NCO groups, and at least one isocyanate reactive component which has at least two groups which are reactive towards said at least one polyisocyanate component, said at least one polyisocyanate component and/or said at least one isocyanate reactive component comprising at least one anchor component which has at least one anchor group which enables to bind a functional component covalently to said isocyanate-based polymeric material and which has at least two reactive NCO groups or at least two isocyanate reactive hydrogen atoms, and wherein said isocyanate-based polymeric material is functionalized by allowing at least one functional component, which comprises a reactive group, to bind covalently to said isocyanate-based polymeric material wherein, said at least one anchor group is a terminal alkyne, which is able to participate in a Huisgen 1,3-dipolar cycloaddition reaction with an azide, and wherein the reactive group of said at least one functional component is an azide and the at least one functional component is allowed to bind covalently to said isocyanate-based polymeric material by a Huisgen 1,3-dipolar cycloaddition reaction between the terminal alkyne anchor group and the azide group of said at least one functional component.

Dependencies are inferred from the claim text.