发明名称 |
PROCESS FOR THE PREPARATION OF CONDENSED PHOSPHORIC ESTERS |
摘要 |
A process comprising the first step of reacting a phosphorus oxytrihalide with a bisphenol A derivative at a specific ratio to prepare a phosphorohalidate, the second step of removing unreacted phosphorus oxytrihalide, the third step of reacting the reaction product obtained in the second step with a monophenol at 120 DEG C or below, and the fourth step of reacting the phosphorohalidate with a monophenol at 120 DEG C or above. The condensed phosphoric esters obtained by this process are extremely lowered in the content of isopropenylphenyl diphenyl phosphate, which is causative of a lowering in the heat resistance of a resin and staining of molds occurring in molding a resin, when the condensed phosphoric ester is used as an additive for the resin.
|
申请公布号 |
WO0107446(A1) |
申请公布日期 |
2001.02.01 |
申请号 |
WO1999JP06217 |
申请日期 |
1999.11.08 |
申请人 |
DAIHACHI CHEMICAL INDUSTRY CO., LTD.;NAKAMURA, SHIN;NOGUCHI, KAZUO;FUJISAWA, TAKU;OHKAWA, TAKAFUMI |
发明人 |
NAKAMURA, SHIN;NOGUCHI, KAZUO;FUJISAWA, TAKU;OHKAWA, TAKAFUMI |
分类号 |
C07F9/12;C07F9/14;(IPC1-7):C07F9/12;C08G79/04 |
主分类号 |
C07F9/12 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|