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:
Jan. 29, 2013
Filed:
May. 20, 2009
Yasuhiro Shindo, Kyoto, JP;
Sho Kim, Kyoto, JP;
Yasuhiro Shindo, Kyoto, JP;
Sho Kim, Kyoto, JP;
Sanyo Chemical Industries, Ltd., Kyoto-shi, JP;
Abstract
There is provided a method for producing a resin particle capable of unprecedentedly realizing both excellent heat resistant keeping property and melting property. The present invention is a method for producing a resin particle (X) comprising the step of treating a resin particle (B) containing a resin (A) composed of a crystalline part (a) containing, as an essential constitutional component, a polyester (p1) not containing an aromatic ring or a polyester (p2) containing an aromatic ring, and produced by polycondensation of a polyol component and a polycarboxylic acid component, and a noncrystalline part (b), with liquid or supercritical carbon dioxide (C), and removing (C), wherein a heat of fusion measured by differential scanning calorimetry (DSC) of the obtained (X) satisfies the following relational formula (1):0≦2/1≦0.9   (1)[in the relational formula (1), Hrepresents a measurement value of a heat of fusion (J/g) at the time of the initial temperature elevation measured by DSC; and Hrepresents a measurement value of a heat of fusion (J/g) at the time of the second temperature elevation measured by DSC].