Cellulose acylate film

Details Cellulose acylate film Cellulose acylate film

2005-02-18

2008-10-14

Visconti, Geraldina (Department: 1795)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C428S001100, C428S532000, C536S056000, C430S542000, C430S564000

Reexamination Certificate

active

07435461

ABSTRACT:
A cellulose acylate film is provided that includes a cellulose acylate that satisfies the degrees of substitution below, and a hydrolysis-condensation product of a hydrolyzable and polycondensable reactive metal compound.in-line-formulae description="In-line Formulae" end="lead"?2.5≦A+B≦3.0in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0≦A≦2.95in-line-formulae description="In-line Formulae" end="tail"?(In the expressions, A denotes the degree of substitution by acetyl, and B denotes the total of the degrees of substitution by acyl groups other than acetyl). There is also provided a process for producing the cellulose acylate film, the process including a step of preparing a solution that includes the cellulose acylate above, an oligomeric hydrolysis-condensation product of a hydrolyzable and polycondensable reactive metal compound, and a solvent, a step of casting the solution on a support, and a step of forming a film by removing the solvent and drying.

REFERENCES:
patent: 2007/0146887 (2007-06-01), Ikeda et al.
patent: 2001-188128 (2001-07-01), None
patent: 2003-171500 (2003-06-01), None
patent: 2003-238688 (2003-08-01), None
Saeed S. Shojaie et al., “Preparation and Characterization of Cellulose Acetate Organic/Inorganic Hybrid Films”, Journal of Applied Polymer Science, 1995, vol. 58, pp. 1263-1274.
Hatsumei Kyokai Koukai Giho, (Journal of Technical Disclosure) (Technical Disclosure No. 2001-1745 published Mar. 15, 2001, Japan Institute of Invention and Innovation) (Cited in the Specification).

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