Title:
PHOSPHITE ESTERS, THEIR PRODUCTION AND THEIR USE
Document Type and Number:
Japanese Patent JP3823348
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a new phosphite ester useful for preventing the thermal deterioration and oxidative deterioration of organic materials such as polyolefins.
SOLUTION: The compound of formula I (R1, R2, R4 and R5 are each H, a 1-8C alkyl, a 5-8C cycloalkyl, phenyl, etc.; R3, R6 are each H, a 1-8C alkyl; X1 is S, a substituted methylene; X2 is a single bond, S, a substituted methyl). For example, 2-[1-(2-(2,4,8,10-tetra-t-pentyl-12-methyl-12H-dibenzo[d, g][1,3,2]dioxaphosphosin-6-yl)oxy-3-t-butyl-5-methylphenyl)ethyl]-6-t-butyl-4- methylphenol. The compound of formula I is obtained by reacting a bisphenol compound of formula II with a phosphorus trihalide in the presence of a hydrogen halide-removing agent such as triethylamine and subsequently reacting the product with a bisphenol compound of formula III.
Inventors:
Kanako Fukuda
Shinya Tanaka
Naoki Inui
Shinya Tanaka
Naoki Inui
Application Number:
JP28510695A
Publication Date:
September 20, 2006
Filing Date:
November 01, 1995
Export Citation:
Assignee:
Sumitomo Chemical Co., Ltd.
International Classes:
C07F9/6574; C09K15/32; C07F9/6578; C08K5/52; C08K5/527; C08L23/00; C08L101/00; (IPC1-7): C07F9/6574; C07F9/6578; C08K5/527; C08L23/00; C08L101/00; C09K15/32
Domestic Patent References:
| JP1121368A | ||||
| JP6321975A | ||||
| JP8208885A |
Attorney, Agent or Firm:
Takashi Kuboyama
Toru Nakayama
Masayuki Enomoto
Toru Nakayama
Masayuki Enomoto
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