| 摘要 |
PURPOSE:To obtain the subject composition capable of readily providing a foamed molding of polyurethane having excellent appearance due to exhibition of excellent mold release characteristics to a polyurethane molding and prevention of roughness of cell, comprising a specific composition. CONSTITUTION:The objective composition comprises (A) 1-70wt.% of an amino group-containing organopolysiloxane (e.g. a compound of formula I), (B) 0.1-70wt.% of an organopolysiloxane modified with a polyoxyalkylene (e.g. a compound of formula II), (C) 0.1-30wt.% of an emulsifying agent (e.g. polyoxyethylene higher alcohol selected from ionic (nonionic) emulsifying agents except the component B and (D) the rest of water. A straight-chain amino group-containing organopolysiloxane having 1,000-50,000 amine equivalent and 50-10,000cS viscosity is preferable as the component A. An organopolysiloxane modified with a polyoxyalkylene having 50-5,000cS viscosity and 3-15 HLB is preferable as the component B and an emulsifying agent having 7-15 HLB is preferable as the component C. |
