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Patent Searching and Data


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.

Inventors:
UMEMOTO KOICHI (JP)
TEI TAKAHIRO (JP)
Application Number:
PCT/JP2007/052579
Publication Date:
September 20, 2007
Filing Date:
February 14, 2007
Export Citation:
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Assignee:
DAICEL CHEM (JP)
UMEMOTO KOICHI (JP)
TEI TAKAHIRO (JP)
International Classes:
C08B3/16; C08J5/18; G02B5/30
Foreign References:
JPH04275301A1992-09-30
JPS5986621A1984-05-18
JPS60188401A1985-09-25
JP2001181302A2001-07-03
JPH11255801A1999-09-21
JPH09188701A1997-07-22
JPH06287279A1994-10-11
JP2005300978A2005-10-27
JP2001281448A2001-10-10
JP2002003644A2002-01-09
JP2002189126A2002-07-05
JPH1192574A1999-04-06
JP2006022390A2006-01-26
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
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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