Coating processes – Medical or dental purpose product; parts; subcombinations;... – Particulate or unit-dosage-article base
Patent
1994-02-10
1995-10-10
Dudash, Diana
Coating processes
Medical or dental purpose product; parts; subcombinations;...
Particulate or unit-dosage-article base
427391, 4273934, A61K 938, A61K 964, B05D 302
Patent
active
054569419
ABSTRACT:
A process for preparing a biodegradable water-resistant film. The process includes the steps of dispersing zein in an aqueous solution comprising acetone in an amount of from 65 to 75% by volume to form a zein dispersion, forming the resulting zein dispersion into a film, and drying the film in an atmosphere having a relative humidity of 85% or less at an initial temperature of 55.degree. C. or less. The present invention also relates to a method for imparting water resistance to an article with poor water resistance by coating the article with the zein dispersion prepared as above, and drying the coated zein dispersion under the above conditions. The film or coating film according of the present invention neither dissolves upon contact with water, nor becomes weak due to water absorption or swelling on contact with water.
REFERENCES:
patent: 2322928 (1943-06-01), Drewsen et al.
patent: 3645760 (1972-02-01), O'Brien et al.
patent: 4009313 (1977-02-01), Crawford et al.
patent: 5260396 (1993-11-01), Kroner et al.
Takahashi Hidekazu
Yamada Kohji
Yanai Norimasa
Dudash Diana
Showa Sangyo Co., Ltd
LandOfFree
Process for preparing biodegradable water-resistant film and met does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for preparing biodegradable water-resistant film and met, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing biodegradable water-resistant film and met will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2309341