Process for preparing a polymeric film

Details Process for preparing a polymeric film Process for preparing a polymeric film

1975-08-19

1980-08-19

Smith, John D.

Coating processes

With post-treatment of coating or coating material

Swelling agent or solvent applied to treat coating

427340, 4273855, 427387, 4273885, 4274071, 427409, B05D 310

Patent

active

042184983

ABSTRACT:
A method of preparing a polymeric film comprising the steps of applying a layer of solution of the polymer in a volatile solvent therefor to a support, heating the solution to evaporate at least part of the solvent and, before the polymer is dry, applying to the surface of the polymer layer a surfactant which is soluble in the polymer solution.

REFERENCES:
patent: 2699403 (1955-01-01), Courts
patent: 2870041 (1959-01-01), Waddle et al.
patent: 2944920 (1960-07-01), Shields
patent: 3440063 (1969-04-01), Chestochowski et al.
patent: 3620820 (1971-11-01), Hess
patent: 3639147 (1972-02-01), Benefiel et al.
patent: 3716393 (1973-02-01), Baker et al.
patent: 3736172 (1973-05-01), Delano et al.
patent: 3816164 (1974-06-01), Pepe et al.
patent: 3900606 (1975-08-01), Mandell
Moilliet et al., Surface Activity, N.Y. Van Nostrand Co., 1961, pp. 3 and 244-245.

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