Title:
縮合型燐酸エステルの製造方法
Document Type and Number:
Japanese Patent JP4546011
Kind Code:
B2
Abstract:
A condensed phosphoric ester having a very low content of isopropenyl phenyl diphenyl phosphate, which reduces heat resistance and causes the contamination of molds during the molding when the condensed phosphoric ester is used as an additive for a resin, is provided by a process including a first step of reacting a phosphorus oxytrihalide with a bisphenol A derivative at a specific ratio to prepare a phosphorohalidate; a second step of removing unreacted phosphorus oxytrihalide; a third step of reacting the reaction product obtained in the second step with a monophenol-based compound at a temperature equal to or lower than 120 DEG C; and a fourth step of reacting the phosphorohalidate with the monophenol-based compound at a temperature equal to or higher than 120 DEG C.
Inventors:
Shin Nakamura
Kazuo Noguchi
Fujisawa Takashi
Takashi Okawa
Kazuo Noguchi
Fujisawa Takashi
Takashi Okawa
Application Number:
JP2001512530A
Publication Date:
September 15, 2010
Filing Date:
November 08, 1999
Export Citation:
Assignee:
Daihachi Chemical Industry Co., Ltd.
International Classes:
C07F9/12; C07F9/14; C08G79/04; C09K21/12
Domestic Patent References:
| JPH1017582A | 1998-01-20 | |||
| JP2000239285A | 2000-09-05 | |||
| JP2001512510A | 2001-08-21 | |||
| JP2001508401A | 2001-06-26 | |||
| JPH1017582A | 1998-01-20 | |||
| JP2000239285A | 2000-09-05 | |||
| JP2001512510A | 2001-08-21 | |||
| JP2001508401A | 2001-06-26 |
Attorney, Agent or Firm:
Hidesaku Yamamoto