发明名称 |
PROCESS FOR PREPARING EXPANDABLE POLYSTYRENE RESIN AND EXPANDAABLE POLYSTYRENE RESIN COMPOSITION |
摘要 |
<p>Provided are a process for preparing an expandable polystyrene (EPS) resin using polyoxyethylene sorbitan monolaurate and a polyethylene wax synthesized from methylene oxide, and an EPS resin composition including a Sasol-wax which is a polyethylene wax synthesized from methylene oxide. The EPS resin is excellent in expandability and strength, and can be processed into a desirable foamed product even when it subjected to short-term maturing after pre-expansion. Addition of divinylbenzene as a crosslinking agent at an initial stage of polymerization and addition of a mixture of butane, pentane, and cyclohexane as a blowing agent permit the EPS resin to be expanded at a high expansion ratio of 93 times or more. Further, addition of a polyethylene wax synthesized from methylene oxide at an initial stage of polymerizaton and addition of polyoxyethylene sorbitan monolaurate in the course of the polymerization, in particular when a polymerization ratio reaches 70-90%, can impart good strength to the EPS resin.</p> |
申请公布号 |
WO2006038751(A1) |
申请公布日期 |
2006.04.13 |
申请号 |
WO2005KR00662 |
申请日期 |
2005.03.09 |
申请人 |
LG CHEM, LTD.;AHN, BONG-KEUN;BAEK, SUNG-HO;YOO, KEUN-HOON;LEE, JONG-UN;WON, JONG-CHEOL |
发明人 |
AHN, BONG-KEUN;BAEK, SUNG-HO;YOO, KEUN-HOON;LEE, JONG-UN;WON, JONG-CHEOL |
分类号 |
(IPC1-7):C08F12/08;C08L25/04;C08J9/04 |
主分类号 |
(IPC1-7):C08F12/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|