Title:
BLOCK COPOLYMER
Document Type and Number:
WIPO Patent Application WO/2002/026847
Kind Code:
A1
Abstract:
A block copolymer comprising two or more, mutually compatible polymer blocks (A) obtained through anionic polymerization and at least one (meth)acrylic ester polymer block (B) incompatible with the polymer blocks (A), wherein the ratio [Mn(Amax)/Mn(Amin] of the number-average molecular weight of the polymer block (Amax) [Mn(Amax)] which is the highest in number-average molecular weight among the polymer blocks (A) to that of the polymer block (Amin) [Mn(Amin)] which is the lowest in number-average molecular weight is 2 or higher, and the block copolymer has at least one segment consisting of [polymer block (Amax)]/[polymer block (B)/[polymer block (Amin)] and has a total polymer block (A) content of 20 to 45 wt.% based on the block copolymer.
Inventors:
KATO MASAJI (JP)
HAMADA KENICHI (JP)
ISHIURA KAZUSHIGE (JP)
MORISHITA YOSHIHIRO (JP)
HAMADA KENICHI (JP)
ISHIURA KAZUSHIGE (JP)
MORISHITA YOSHIHIRO (JP)
Application Number:
PCT/JP2001/008050
Publication Date:
April 04, 2002
Filing Date:
September 17, 2001
Export Citation:
Assignee:
KURARAY CO (JP)
KATO MASAJI (JP)
HAMADA KENICHI (JP)
ISHIURA KAZUSHIGE (JP)
MORISHITA YOSHIHIRO (JP)
KATO MASAJI (JP)
HAMADA KENICHI (JP)
ISHIURA KAZUSHIGE (JP)
MORISHITA YOSHIHIRO (JP)
International Classes:
C08F297/02; C08L53/00; C09J153/00; (IPC1-7): C08F297/02
Domestic Patent References:
| WO1993017057A1 | 1993-09-02 |
Foreign References:
| US5391628A | 1995-02-21 | |||
| JPH1017633A | 1998-01-20 | |||
| US5264527A | 1993-11-23 | |||
| EP0945470A1 | 1999-09-29 |
Other References:
See also references of EP 1329466A4
Attorney, Agent or Firm:
Tsuji, Yoshiko (Uchikanda 1-chome Chiyoda-ku Tokyo, JP)
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