Process for preparing ultrathin polymethylmethacrylate polymer f

Details Process for preparing ultrathin polymethylmethacrylate polymer f Process for preparing ultrathin polymethylmethacrylate polymer f

1986-10-10

1988-08-23

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

By casting on a liquid surface

5263297, B29C 3902, C08F12018

Patent

active

047659394

ABSTRACT:
A process to prepare pinhole-free, ultrathin, polymethylmethacrylate films having thicknesses of about 400 angstroms or less. The films are prepared by dissolving a polymethylmethacrylate polymer in a mixture of solvents to form a casting solution and then casting the solution upon water to form a free-standing film. The films find particular utility in separatory applications.

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