Dust-proof film

Details Dust-proof film Dust-proof film

1988-10-26

1991-07-02

Cashion, Jr., Merrell C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 58, C08B 326

Patent

active

050287028

ABSTRACT:
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.

REFERENCES:
patent: 4289839 (1981-09-01), DiPoppo

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