POLYMERIZATION CATALYST FOR POLYTHIOURETHANE OPTICAL MATERIAL, POLYMERIZABLE COMPOSITION CONTAINING THE CATALYST, POLYTHIOURETHANE RESIN OBTAINED FROM THE COMPOSITION, AND METHOD FOR PRODUCING THE RESIN

Title:

Document Type and Number:

WIPO Patent Application WO/2008/035457

Kind Code:

A1

Abstract:

By using an amine hydrochloride represented by the general formula (1) below as a catalyst, a polythiourethane resin, which is suitably used as a transparent resin for optical use, can be obtained without using an organotin compound which has been conventionally used as a catalyst for polythiourethane resins, and without being affected by the acidity of an additive. (In the formula, R1, R2 and R3 independently represent a monovalent or higher valent linear aliphatic, branched aliphatic, cyclic aliphatic or aromatic organic residue which may have a hydroxyl group or an amino group; and R1, R2 and R3 may arbitrarily combine together to form a ring.)

Inventors:

KAWATO NOBUO (JP)
IWAZUMI MASANORI (JP)
HAYASHI HIDETOSHI (JP)
KOBAYASHI SEIICHI (JP)

Application Number:

PCT/JP2007/000990

Publication Date:

March 27, 2008

Filing Date:

September 11, 2007

Export Citation:

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Assignee:

MITSUI CHEMICALS INC (JP)
KAWATO NOBUO (JP)
IWAZUMI MASANORI (JP)
HAYASHI HIDETOSHI (JP)
KOBAYASHI SEIICHI (JP)

International Classes:

C08G18/18; C08G18/38; G02B1/04

Foreign References:

JP2002528613A	2002-09-03
JPH08208792A	1996-08-13
JP2002082203A	2002-03-22
JPH0384021A	1991-04-09
JP2002121379A	2002-04-23
JPH10130355A	1998-05-19
JPH0384021A	1991-04-09
JPS6377918A	1988-04-08
JPS6216484A	1987-01-24
JPH0977850A	1997-03-25
JP2000256571A	2000-09-19

Other References: