发明名称 |
PROCESS FOR PRODUCING POLYALKYLENE TEREPHTHALATE, PROCESS FOR PRODUCING POLYALKYLENE TEREPHTHALATE MOLDING AND POLYALKYLENE TEREPHTHALATE MOLDING. |
摘要 |
<p>A process for producing a polyalkylene terephthalate, comprising feeding a polyalkylene terephthalate prepolymer of 0.2 to 2 dl/g intrinsic viscosity [eta] whose 70 mol% or more is constituted of ethylene terephthalate or 1,4-butylene terephthalate repeating units in molten form through a raw material supply port into a polymerizer; delivering the polyalkylene terephthalate prepolymer through holes of a perforated plate; and thereafter effecting polymerization of the prepolymer in vacuum while causing the prepolymer to fall along the outside open surface of a support at a temperature of (prepolymer crystal melting point - 10 degree C) to (prepolymer crystal melting point + 30 degree C) under the condition of the formula S1/S2 > 1 wherein S1 is the surface area of falling polyalkylene terephthalate while S2 is the area in which the polyalkylene terephthalate is in contact with the support.</p> |
申请公布号 |
MXPA06003846(A) |
申请公布日期 |
2006.07.03 |
申请号 |
MX2006PA03846 |
申请日期 |
2004.10.07 |
申请人 |
ASAHI KASEI CHEMICALS CORPORATION |
发明人 |
TSUTOMU KATSUMATA |
分类号 |
C08G63/183;C08G63/78;(IPC1-7):C08G63/183 |
主分类号 |
C08G63/183 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|