Polyvinyl butyrate pellicle compositions and pellicles thereof f

Details Polyvinyl butyrate pellicle compositions and pellicles thereof f Polyvinyl butyrate pellicle compositions and pellicles thereof f

1983-03-08

1984-11-13

Cannon, James C.

Stock material or miscellaneous articles

Circular sheet or circular blank

Ornamental, decorative, pattern, or indicia

252582, 350315, 350318, 355 53, G02B 500

Patent

active

044825919

ABSTRACT:
A pellicle for use in projection printing comprises a pellicle in which the transparent film is formed from a polyvinyl butyral resin or from a casting composition which is a mixture of a polyvinyl butyral resin and a dispersion of colloidal silica and a silicone resin which is a lower aliphatic alcohol-water solution of the partial condensate of a silanol. A pellicle employing such films are useful in the near, mid and deep UV regions.

REFERENCES:
patent: 3474039 (1969-10-01), Newing
patent: 3986997 (1976-10-01), Clark
patent: 4131363 (1978-12-01), Shea et al.
patent: 4320940 (1982-03-01), Mueller et al.

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