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:
Oct. 30, 2012
Filed:
Oct. 24, 2006
Akinori Etoh, Ichihara, JP;
Keiichi Taki, Funabashi, JP;
Shinjirou Sakurai, Kamakura, JP;
Tomokazu Ishizuka, Ichihara, JP;
Yasuo Okada, Ichihara, JP;
Akinori Etoh, Ichihara, JP;
Keiichi Taki, Funabashi, JP;
Shinjirou Sakurai, Kamakura, JP;
Tomokazu Ishizuka, Ichihara, JP;
Yasuo Okada, Ichihara, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
A heat-sensitive recording material includes a heat-sensitive recording layer on a support which layer produces a color upon heating, and a protective layer on the heat-sensitive recording layer. The protective layer is obtained from a composition (A) based on an emulsion of a copolymer resin (a). The copolymer resin (a) includes a vinyl monomer component having a carboxyl group, and a vinyl monomer component copolymerizable with the vinyl monomer component. The copolymer resin (a) contains 1 to 10 parts by weight of the vinyl monomer component having a carboxyl group. The copolymer resin has a SP value (solubility parameter) of not less than 9.5 (cal/cm)and a glass transition temperature (Tg) of 20 to 130° C. The emulsion of the copolymer resin (a) has a minimum film-forming temperature (MFT) of more than 5° C. The emulsion for heat-sensitive recording material provides high durability, in particular water resistance, antiblocking properties in water-wetted state and chemical resistance, and has significantly improved storage stability.