Patent ID: 8455608
Filing Date: 2013-06-04
Classification: C08G

Abstract:
1. A process for preparing a thermoplastic polyisocyanate polyaddition product based on polyisocyanate (i) and compounds (II) which are reactive toward polyisocyanate, with or without the use of chain extender (iii), a first catalyst (iv) and/or auxiliaries and/or additives (v), which react with one another in a first step, wherein, in a second step, a second catalyst (vi) which accelerates the reaction between the polyisocyanate (i) and the compounds (ii) which are reactive toward polyisocyanate is applied to the polyisocyanate polyaddition product prepared in this way, where the second catalyst (vi) is initially converted into a mist and/or vaporized and is then applied to the polyisocyanate polyaddition product wherein the polyisocyanate polyaddition product is present as pellets.