POWDERED POLYURETHANE UREA RESIN COMPOSITION FOR SLUSH MOLDING AND MANUFACTURING PROCESS THEREFOR
申请人:Sanyo Chemical Industries, Ltd.
公开号:EP2740749A1
公开(公告)日:2014-06-11
Provided are: a powdered material for slush molding; and a manufacturing process therefor. The powdered material is less odorous, exhibits excellent powder fluidity, and does not suffer from troubles resulting from the sliding-down or agglomeration of a pigment even when the resin particles have been pigmented on the surfaces thereof. Thus, the powdered material ensures high productivity. The powdered material is a powdered polyurethane urea resin composition which comprises (D) a polyurethane urea resin that has a total content of bimolecular condensate of acetone, bimolecular condensate of methyl ethyl ketone, and bimolecular condensate of methyl isobutyl ketone of 1,000ppm, or less and (N) an additive, wherein the polyurethane urea resin (D) takes the form of thermoplastic polyurethane urea resin particles (P) that have a volume-mean particle diameter of 20 to 500µm and that have protrusions and recesses on the surfaces. The powdered polyurethane urea resin composition is manufactured by a manufacturing process which includes a step of mixing (A) an isocyanato-terminated urethane prepolymer with (B) an alicyclic diamine and/or an aliphatic diamine in an aqueous medium by stirring to form the resin particles (P).
本文提供了:一种用于泥浆成型的粉末材料及其制造工艺。这种粉末状材料气味较小,具有优异的粉末流动性,即使在树脂颗粒表面涂上颜料,也不会出现颜料滑落或聚集的问题。因此,该粉末材料可确保较高的生产率。粉末状材料是一种粉末状聚氨酯脲树脂组合物,它包括 (D) 聚氨酯脲树脂,其丙酮双分子缩合物、甲基乙基酮双分子缩合物和甲基异丁基酮双分子缩合物的总含量为 1、(N) 添加剂,其中聚氨酯脲树脂 (D) 为热塑性聚氨酯脲树脂颗粒 (P),其体积-平均颗粒直径为 20 至 500µm,表面有突起和凹陷。粉末状聚氨酯脲树脂组合物是通过制造工艺制造的,该制造工艺包括以下步骤:将(A) 异氰酸酯端基聚氨酯预聚物与(B) 脂环族二胺和/或脂肪族二胺在水介质中搅拌混合,以形成树脂颗粒 (P)。