Title:
PROCESS FOR CONTINUOUSLY PRODUCING HYDROGENATED STYRENE BLOCK COPOLYMER
Document Type and Number:
WIPO Patent Application WO/2002/002651
Kind Code:
A1
Abstract:
A process for economically and continuously producing a hydrogenated styrene block copolymer having high heat resistance and high transparency; and a hydrogenated styrene block copolymer suitable for use as an optical molding material. The continuous process for producing a hydrogenated styrene block copolymer comprises the step of stepwise polymerizing a styrene monomer solution, a solution of an anionic polymerization initiator, and a conjugated diene with a piston flow type polymerizer and the step of hydrogenating the copolymer obtained.
Inventors:
MAKI TAKAMASA (JP)
NITTA HIDEAKI (JP)
MURAOKA TAKESHI (JP)
IWATA KAORU (JP)
NITTA HIDEAKI (JP)
MURAOKA TAKESHI (JP)
IWATA KAORU (JP)
Application Number:
PCT/JP2001/005618
Publication Date:
January 10, 2002
Filing Date:
June 29, 2001
Export Citation:
Assignee:
TEIJIN LTD (JP)
BAYER AG (DE)
MAKI TAKAMASA (JP)
NITTA HIDEAKI (JP)
MURAOKA TAKESHI (JP)
IWATA KAORU (JP)
BAYER AG (DE)
MAKI TAKAMASA (JP)
NITTA HIDEAKI (JP)
MURAOKA TAKESHI (JP)
IWATA KAORU (JP)
International Classes:
G02B1/04; C08F2/01; C08F8/04; C08F297/02; C08F297/04; C08J5/00; C08L53/02; G11B7/24047; G11B7/2533; (IPC1-7): C08F8/04; C08F297/02
Foreign References:
| US5191024A | 1993-03-02 | |||
| GB1347088A | 1974-02-13 |
Attorney, Agent or Firm:
Noguchi, Yasuhiro (4-10 Nishi-shimbashi 1-chome Minato-ku, Tokyo, JP)
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