发明名称 |
PROCESS FOR PRODUCING POWDERED THERMOPLASTIC POLYURETHANE UREA RESIN |
摘要 |
It is intended to provide a process for producing a powdered thermoplastic polyurethane urea resin comprising the steps of forming a prepolymer with an isocyanate group at an end by reacting a polymer polyol (a), an organic polyisocyanate (b), a monofunctional active hydrogen group-containing compound (c) and preferably further a bifunctional active hydrogen group-containing compound (d) at a specific ratio and forming a polyurethane urea resin by carrying out a chain extension reaction of the prepolymer with an isocyanate group at an end and water (e) in a non-aqueous dispersion solvent. According to this production process, the powdered thermoplastic polyurethane urea resin excellent in melt moldability can be obtained and the control of the molecular weight of the polyurethane urea resin is easy. ® KIPO & WIPO 2008
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申请公布号 |
KR20080028378(A) |
申请公布日期 |
2008.03.31 |
申请号 |
KR20077030344 |
申请日期 |
2006.05.30 |
申请人 |
NIPPON POLYURETHANE INDUSTRY CO., LTD. |
发明人 |
HAYASHI MASAHIRO;KITA MOTOMU;TEZEN HIDEYUKI;MINAMI YURIKO |
分类号 |
C08G18/82;B29C41/18;C08G18/10;C08G18/65 |
主分类号 |
C08G18/82 |
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