公开(公告)号：US5397498A

公开(公告)日：1995-03-14

申请号：US204886

申请日：1994-03-02

申请人： Yuzuru Ishida ,  Masahiro Mitsuboshi ,  Ichirou Otsuka ,  Haruo Inoue

发明人： Yuzuru Ishida ,  Masahiro Mitsuboshi ,  Ichirou Otsuka ,  Haruo Inoue

IPC分类号： B29C33/72 ,  C11D1/12 ,  C11D3/00 ,  C11D3/075

CPC分类号： B29C33/722

摘要： A method for cleaning the interior of a molding machine having a residual thermoplastic resin after molding comprises the step of cleaning the interior of a molding machine with a cleaning composition which comprises:(A) 100 parts by weight of a thermoplastic resin;(B) 2 to 100 parts by weight of a polyalkylene oxide glycol having a viscosity-average molecular weight ranging from 10,000 to 1,500,000; and(C) 0.5 to 5 parts by weight, per 100 parts by weight of the sum of the foregoing components (A) and (B), of an alkylsulfate represented by the following general formula (I):R.sub.1 --O--SO.sub.3 M (I) wherein R.sub.1 represents an alkyl group having 8 to 20 carbon atoms and M represents an ion selected from the group consisting of K, Na and NH.sub.4 or a fatty acid salt represented by the following general formula (II):R.sub.2 COOX (II) wherein R.sub.2 represents an alkyl group having 7 to 23 carbon atoms and X represents an ion selected from the group consisting of K, Na, Ca, Mg and Zn.The cleaning method exhibits excellent properties of cleaning molding machines and makes it possible to perform rapid exchange of colors and/or kinds of resins within a single molding machine.

摘要翻译： 一种在成型后具有残余热塑性树脂的成型机的内部清洁方法包括用清洁组合物清洗成型机内部的步骤，该清洗组合物包括：（A）100重量份的热塑性树脂; （B）2〜100重量份粘均分子量为10,000〜1,500,000的聚环氧烷二醇; 和（C）每100重量份上述组分（A）和（B）的总和为0.5-5重量份的由以下通式（I）表示的烷基硫酸盐：R 1 -O-SO 3 M（ I）其中R1表示具有8至20个碳原子的烷基，M表示选自K，Na和NH 4的离子或由以下通式（II）表示的脂肪酸盐：R2COOX（II）其中 R2表示碳原子数为7〜23的烷基，X表示选自K，Na，Ca，Mg，Zn等的离子。 清洗方法表现出优异的清洁成型机的性能，并且可以在单个成型机内执行颜色和/或种类的树脂的快速交换。