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:
Apr. 01, 2014
Filed:
Sep. 28, 2007
Nobuhiro Oosaki, Sodegaura, JP;
Jinsho Nambu, Kamakura, JP;
Nobuhiro Oosaki, Sodegaura, JP;
Jinsho Nambu, Kamakura, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A method for producing a multilayer article is provided. The method comprises: a step of applying a first dispersion liquid comprising a first liquid medium and a first polymer component, a first alkali metal ion and a first inorganic laminar compound each dispersed in the first liquid medium to a surface of a support having a layer composed of a first thermoplastic resin to form a first dispersion liquid film on the support, wherein the first polymer component contains hydroxyl groups and carboxyl groups at a molar ratio, hydroxyl groups:carboxyl groups, of from 30:70 to 95:5; a step of removing the first liquid medium from the first dispersion liquid film to form a first coating film, thereby producing a layered article comprising the support and the first coating film; a step of heating the layered article at or above a temperature at which a condensation reaction between a hydroxyl group and a carboxyl group in the first coating film can occur, thereby hardening the coating film; and a step of supplying a second thermoplastic resin having been plasticized onto the layer of the first thermoplastic layer of the substrate of the layered article and shaping it into a specified shape, thereby producing a multilayer article having the layered article and a layer of the second thermoplastic resin.