POLYESTER POLYOLS AND THE USE OF POLYESTER POLYOLS FOR PROUCING PUR CAST ELASTOMERS THAT HAVE AN IMPROVED RESISTANCE TO HYDROLYSIS

摘要

the subject of the invention is polyester polyols, which are the weight of the ku00f6zepesekvivalens 200 to 4000 in the province, and that the dikarbonsavak) - w - or derivatives thereof, and (b), 1,4-butanediol, (c) 1.6 - hexu00e1ndiol 1,3-propanediol, (d), or a combination of these pentu00e1ndiol 1.5 or 3 to 6, and (e) hidroxilcsoportot containing polyols by reacting with the component (b) vannakelu0151u00e1llu00edtva, volume 51 to 85 mol%(c) komponensmennyisu00e9ge 7 to 25 mol% of the (d) component of 7 to 25 mol% and the quantity of the component (e) of 0.2 - 2.5 mol%, (b) to (e) listed in point polioloku00f6sszmennyisu00e9gu00e9re weight basis.according to the invention javu00edtotthu00eddrolu00edzisu00e1llu00f3su00e1gu00fa polyester polyols polyurethane elastomers, polyurethane elastomers, mainly in the production of hasznu00e1lhatu00f3kfel pour,this is the subject of the invention is application. oh