Patent ID: 7273910

Claim:
Process for the preparation of a functionalized polymer wherein a. a first compound, containing at least a primary amino group and at least a group chosen from a first series comprising a secondary amino group, an amino group attached to a secondary carbon atom and a primary hydroxyl group or a group chosen from a second series comprising a hydroxyl group attached to a secondary carbon atom and a carboxy group, or a first compound containing at least a group chosen from the first series and also contains at least a group chosen from the second series whereby optionally said first or second series furthermore comprise a double or triple bond, is contacted with an amount of carbonyl bislactam at a temperature below 150° C. and with the amount of carbonyl bislactam being at least equimolar to the number of primary amino groups or at least equimolar to the number of groups chosen from the first series and with the molar amount of carbonyl bislactam being lower than the sum of the molar number of primary amino groups and groups chosen from the first or second series or lower than the sum of the molar number of groups chosen from the first series and chosen from the second series, as a result of which a first intermediate compound is formed which contains, besides at least one blocked isocyanate group, a free amino group, hydroxy group, carboxy group or a double or triple bond; b. the first intermediate compound is contacted, at a temperature preferably below 150° C., with an additive such that a link is established via the free amino, hydroxy or carboxy group or via a double or triple bond to form a second intermediate compound; c. the second intermediate compound is contacted with a polymer having at least one free amino group or hydroxyl group at a temperature above the melting point of the polymer and at least above 150° C., such that the blocked isocyanate group reacts with the free amino group or hydroxy group of the polymer to form the functionalized polymer.