The invention relates to a method for functionalising a thermoset, crosslinked isocyanate-based polymeric solid material which is made of isocyanate and isocyanate reactive components, at least one of which comprises an anchor component which has at least one anchor group. The anchor groups on the solid material are formed by terminal alkene and/or alkyne groups. To functionalise this polymeric solid material it is brought in contact with a solution which contains at least one functional component. This functional component comprises at least one thiol group and is allowed to bind covalently to the polymeric solid material by a free-radical addition reaction between the thiol groups on the functional component and the terminal alkene and/or alkyne anchor groups on the undissolved solid material. An effective functionalisation of the polymeric material can thus be achieved notwithstanding the heterogeneous reaction conditions.
本发明涉及一种对热固性交联
异氰酸酯基聚合物固体材料进行功能化的方法,该固 体材料由
异氰酸酯和
异氰酸酯反应组分组成,其中至少一种组分包括一个锚定组分,该 锚定组分具有至少一个锚定基团。固体材料上的锚基由端烯基和/或炔基形成。为了使这种聚合固体材料功能化,需要将其与含有至少一种功能成分的溶液接触。这种官能团至少包含一个
硫醇基团,通过官能团上的
硫醇基团与未溶解固体材料上的末端烯基和/或炔基锚基团之间的自由基加成反应,使其与聚合物固体材料共价结合。因此,尽管存在异构反应条件,但仍可实现聚合物材料的有效官能化。