Title:
MODIFIED CELLULOSE ACYLATE AND MOLDED BODY FOR OPTICAL USE
Document Type and Number:
WIPO Patent Application WO/2007/105399
Kind Code:
A1
Abstract:
Disclosed is a modified cellulose acylate (for example, a modified cellulose acetate), which is excellent in optical isotropy and suitably used for optical films and the like. Specifically disclosed is a hydroxy acid-modified cellulose acylate having a cellulose acylate (such as cellulose acetate) and a graft chain formed by graft-polymerizing a hydroxy acid component (for example, a hydroxy acid such as lactic acid and a cyclic ester such as lactone and lactide) to a hydroxyl group of the cellulosed acylate. In this hydroxy acid-modified cellulose acylate, the substitution degree of acyl groups in the cellulose acylate is not less than 2.7, and the ratio of the graft-polymerized hydroxy acid component relative to 1 mole of the glucose unit of the cellulose acylate is 0.1-5 moles on average in terms of the hydroxy acid.
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Inventors:
UMEMOTO KOICHI (JP)
TEI TAKAHIRO (JP)
TEI TAKAHIRO (JP)
Application Number:
PCT/JP2007/052579
Publication Date:
September 20, 2007
Filing Date:
February 14, 2007
Export Citation:
Assignee:
DAICEL CHEM (JP)
UMEMOTO KOICHI (JP)
TEI TAKAHIRO (JP)
UMEMOTO KOICHI (JP)
TEI TAKAHIRO (JP)
International Classes:
C08B3/16; C08J5/18; G02B5/30
Foreign References:
JPH04275301A | 1992-09-30 | |||
JPS5986621A | 1984-05-18 | |||
JPS60188401A | 1985-09-25 | |||
JP2001181302A | 2001-07-03 | |||
JPH11255801A | 1999-09-21 | |||
JPH09188701A | 1997-07-22 | |||
JPH06287279A | 1994-10-11 | |||
JP2005300978A | 2005-10-27 | |||
JP2001281448A | 2001-10-10 | |||
JP2002003644A | 2002-01-09 | |||
JP2002189126A | 2002-07-05 | |||
JPH1192574A | 1999-04-06 | |||
JP2006022390A | 2006-01-26 |
Other References:
TERAMOTO Y. ET AL.: "Cellulose acetate-graft-poly(hydroxyalkanoate)s: Synthesis and dependence of the thermal properties on copolymer composition", MACROMOLECULAR CHEMISTRY AND PHYSICS, vol. 205, no. 14, 2004, pages 1904 - 1915, XP003017739
HATAKEYAMA H. ET AL.: "The effect of side chain association on thermal and viscoelastic properties cellulose acetate-based polycaprolactones", JOURNAL OF THERMAL ANALYSIS AND COLORIMETRY, vol. 59, no. 1-2, 2000, pages 157 - 168, XP019253163
HATAKEYAMA H. ET AL.: "The effect of side chain association on thermal and viscoelastic properties cellulose acetate-based polycaprolactones", JOURNAL OF THERMAL ANALYSIS AND COLORIMETRY, vol. 59, no. 1-2, 2000, pages 157 - 168, XP019253163
Attorney, Agent or Firm:
KUWATA, Mitsuo (6th Floor Minato Umeda Building, 3-17, Nishitemma 6-chome, Kita-k, Osaka-shi Osaka 47, JP)
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