| 摘要 |
To provide a thermosetting polyurethane elastomer which is free from the occurrence of bleeding and blooming, and which has extremely low coefficient of friction. The present invention solves a problem by introducing, into a thermosetting polyurethane elastomer-forming composition, at least one substance selected from the group consisting of polyoxyethylene alkyl ethers and linear aliphatic alcohols having 20-40 carbon atoms and a melting point of 90°C or less, and additionally octadecyl isocyanate in order to achieve a better effect, or alternatively, by introducing an aliphatic amide and at least one substance selected from the group consisting of polyoxyethylene alkyl ethers, linear aliphatic alcohols having 20-40 carbon atoms and a melting point of 90°C or less and octadecyl isocyanate. The present invention solves another problem by using, for resin molding, a mold release agent composition which contains an organopolysiloxane having at least one carboxylate selected from the group consisting of quaternary ammonium and quaternary phosphonium in the molecular structure. |
