The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 1977
Filed:
Oct. 03, 1974
Shiro Nakano, Suita, JA;
Norio Kanbe, Amagasaki, JA;
Tsugumichi Nakagawa, Hirakata, JA;
Akira Nishio, Takatsuki, JA;
Kengo Kitahara, Funabashi, JA;
Sekisui Kagaku Kogyo Kabushiki Kaisha, BOTH OF, JA;
Tomoegawa Paper Co., Ltd., BOTH OF, JA;
Abstract
Method for producing a thermoplastic resin film or sheet useful for chelate color printing which involves contacting at least one surface of a thermoplastic resin film or sheet with a mixed liquid composition comrising (i) a liquid capable of dissolving or swelling said thermoplastic resin, (ii) a liquid having no ability to dissolve or swell said thermoplastic resin, being compatible with said liquid (i) and having a faster rate of evaporation than said liquid (i), and (iii) an inorganic compound containing at least one metal atom selected from the group consisting of iron, vanadium, titanium, molybdenum and tungsten, or an organic compound capable of forming a chelate compound with the metal atom and developing a color, and evaporating off said liquids (i) and (ii), thereby to form a porous surface layer of the film or sheet to which is adhered an uppermost chelate color printing layer comprising said inorganic or organic compound (iii). The mixed liquid composition may also contain an insoluble finely divided substance and a cellulose derivative.