| 摘要 |
The invention relates to a method for producing a polyurethane molded body, wherein (a) polyisocyanates (a-1) or polyisocyanate prepolymers, obtainable from a polyisocyanate component (a-1), polyol (a-2) containing alkylene oxide, and chain extenders (a-3), and (b) polyether polyols containing propylene oxide and ethylene oxide with an ethylene oxide content of 0.5 to 60 wt% and a content of primary OH groups of 1 to 45%, or (c) polymer polyether polyols based on polyether polyols containing propylene oxide and ethylene oxide with an ethylene oxide content of 0.5 to 60 wt% and a content of primary OH groups of 1 to 45%, wherein at least one of the components (b) or (c) or both components (b) and (c) are contained, and (d) chain extenders, (e) catalysts, (f) blowing agents, containing water, and optionally (g) other auxiliary agents and/or additives are mixed to form a reaction mixture and are cured in a mold to form the polyurethane molded body. |
