DESMODUR RE RFE CAS NO.152618-24-1

application

desmodur re polyisocyanate is a highly effective

crosslinker for adhesives based on desmocoll polyurethane, natural rubber or synthetic rubber. desmodur re polyisocyanate is also useful for improving adhesion to rubber-based materials.

after adding desmodur re polyisocyanate to a polyurethane or rubber-based adhesive, the ready-to- use two-component mixture must be used within its

pot life. pot life is not only governed by the polymer content of the adhesive but also by its other compo- nents (resins, antioxidants, plasticizers, solvents, etc.). at the end of the pot life, which can vary from

several hours to one working day, the adhesive becomes increasingly difficult to process and its viscosity increases rapidly. finally, irreversible gelling occurs. the following guide values are suggested for determining the amount of crosslinker to be used. amounts given are parts by weight (pbw).

to crosslink 100 pbw adhesive: desmocoll® (hy- droxyl polyurethane) based adhesives (containing

20% polyurethane) should be crosslinked with 4 - 7

pbw desmodur re polyisocyanate. baypren®

(polychloroprene rubber) based adhesives (containing approximately 20% rubber content) should be crosslinked with 4 - 7 pbw desmodur re polyisocyanate.