| abstract |
A process is described for the preparation of polycarbonatendiols (PCD) with a high molecular weight comprising twonsubsequent reaction steps, wherein in the first step PCDnwith a molecular weight ranging from 500 to 2000, is synthesizednand in the second step the molecular weight of thenPCD is increased to the desired value. n Polycarbonate diols are usefully applied in the field ofnthermoelastomeric ,polyurethane manufactured products,npaints, adhesives and synthetic leather. |