Title:
MERCAPTO COMPOUNDS, PRODUCTION OF THE SAME, TETRAOL COMPOUND AND PRODUCTION OF THE SAME
Document Type and Number:
Japanese Patent JP3794651
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a new mercapto compound for optical material and curing agent for resin, etc., having high sulfur content and low in offensive smell by reacting bis-(2-mercaptoethyl)sulfide and specific pentaerythritol derivatives in the presence of a base.
SOLUTION: This new mercapto compound is tetrakis(7-mercapto-2,5-dithia- heptyl)methane expressed by formula I, having high sulfur atom content, polyfunctionality and low in offensive odor, useful in organic optical material region as raw monomers giving a high refractive index resin caused by the high sulfur content and curing agent, etc., of an epoxy resin. This new mercapto compounds is obtained by carrying out the reaction of bis-(2-mercaptoethyl)sulfite and pentaerythritoltetrahalide or sulfonic acid ester of pentaerythritol expressed in formula (R is a 1-4C alkyl, phenyl, chlorophenyl, nitrophenyl, tolyl) in the presence of a base.
Inventors:
Koji Shimada
Naoko Sato
Katsuya Ikeda
Michio Suzuki
Naoko Sato
Katsuya Ikeda
Michio Suzuki
Application Number:
JP10317396A
Publication Date:
July 05, 2006
Filing Date:
March 28, 1996
Export Citation:
Assignee:
Sumitomo Seika Co., Ltd.
International Classes:
B01J31/02; C07C321/14; C07C319/14; C07C319/20; C07C323/12; (IPC1-7): C07C321/14; B01J31/02; C07C319/14; C07C319/20; C07C323/12
Domestic Patent References:
| JP7252207A | ||||
| JP6116337A | ||||
| JP5320301A |
Attorney, Agent or Firm:
Tsunehiko Ichikawa