| 摘要 |
<p>Polyurethane elastomers (I), obtained by reaction of di- and/or polyisocyanate with at least a polyester polyol, optionally further polyetherpolyols and/or polyetheresterpolyols, optionally low-molecular chain lengthened and/or cross linked with OH numbers of 150-1870, in the presence of amine and/or metalloorganic catalysts, antistatic agents, optionally propellants and additives and/or auxiliary agents, are new. Polyurethane elastomers (I), obtained by reaction of di- and/or polyisocyanate with at least a polyester polyol (with OH numbers of 20-280 (preferably 28-150) and average functionalities of 1.5-3 (preferably 1.8-2.4)), optionally further polyether polyol (with OH numbers of 10-150 and functionalities of 1.5-8 (preferably 1.8-6)) and/or polyetherester polyol (with OH numbers of 20-280 and functionalities of 1.5-3 (preferably 1.8-2.4), optionally low-molecular chain length and/or cross linked with OH numbers of 150-1870, in the presence of amine and/or metalloorganic catalysts, antistatic agents consisting of (a) quaternary alkyl ammonium-monoalkyl sulfate of formula (R 1>R 2>R 3>R 4>N +>R 5>SO 4 -), (b) compounds (consisting of: (i) linear, OH group-free dicarboxylic acid esters of formula (COOR 6>-X-COOR 7>); and/or (ii) lactone group consisting of gamma -butyrolactone, gamma -valerolactone, alpha ,gamma -, beta ,gamma - and gamma gamma dimethylbutyrolactone), optionally propellants and additives and/or auxiliary agents, where the amount of (a) and (b) are 0.5-15 and 1.5-7.5 wt.%, respectively, are new. R 1>-R 4>1-20C alkyl, where the total amount of the carbon atoms of the four groups does not lie over 70; R 5>2-10C alkyl; X : 1-20C or a bond; and R 6>, R 7>1-20C alkyl.</p> |
