Title:
PRODUCTION OF POLY(METH)ACRYLATE
Document Type and Number:
Japanese Patent JP3163043
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a polymer controlled in molecular weight, having slightly discoloring and excellent in heat resistance by polymerizing a (meth)acrylate using an organometallic compound having polymerization initiating points in the presence of a specific compound used as a chain transfer agent.
SOLUTION: A (meth)acrylic acid ester is polymerized by using an organometallic compound having at least one polymerization initiating point (preferably a trifunctional organic Sc compound, a trifunctional organic Y compound, a trifunctional organic rare earth metal or a bifunctional organic rare earth metal) in the presence of a compound having reactive hydrogen atom in the molecule and represented by the formula (R1)SH (R1 is H or a 1-20C hydrocarbon), etc., to provide the objective poly(meth)acrylate. The method enables production of polymethacrylate at a lower cost by using smaller amount of organometallic compound, compared with a conventional technique.
Inventors:
Akira Yanagase
Seiji Tone
Toru Tokimitsu
Mitsufumi Nodono
Seiji Tone
Toru Tokimitsu
Mitsufumi Nodono
Application Number:
JP21394297A
Publication Date:
May 08, 2001
Filing Date:
July 25, 1997
Export Citation:
Assignee:
Mitsubishi Rayon Co., Ltd.
International Classes:
C08F2/38; C08F4/52; C08F20/06; C08F20/10; (IPC1-7): C08F20/10; C08F2/38; C08F4/52
Domestic Patent References:
| JP6166719A | ||||
| JP6306109A | ||||
| JP8245711A |
Attorney, Agent or Firm:
Toshio Yoshizawa