Dust-proof film

Details Dust-proof film Dust-proof film

C - Chemistry, Metallurgy

08

J

18/1000

C08J 5/18 (2006.01) C08L 1/12 (2006.01) G03F 1/14 (2006.01)

Patent

CA 1330860

ABSTRACT OF THE DISCLOSURE: A dust-proof film is made from a material which contains a cellulose ester and whose transmittances of light having a wavelength of 365 nm and a wavelength of 436 are 98% or more, or the dust-proof film is formed of cellulose propionate whose weight average molecular weight using polystyrene as a reference is 60,000 - 400,000. The dust-proof film has a long life and excels in light resisting properties with respect to the i-line. In addition, the dust-proof film is useful as a long-life pellicle for a broad line and exhibits high light transmittance properties with respect to both the i-line and the g-line.

580730

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