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. 10, 2006
Filed:
Aug. 24, 2004
Toshiaki Masuda, Yao, JP;
Ichiro Takahara, Yao, JP;
Takashi Hujie, Yao, JP;
Yoshiaki Shirakabe, Yao, JP;
Katsushi Miki, Yao, JP;
Toshiaki Masuda, Yao, JP;
Ichiro Takahara, Yao, JP;
Takashi Hujie, Yao, JP;
Yoshiaki Shirakabe, Yao, JP;
Katsushi Miki, Yao, JP;
Matsumoto Yushi-Seiyaku Co., Ltd., Osaka, JP;
Abstract
Thermo-expansive microcapsules comprising a shell of a polymer produced by polymerizing a mixture of monomers, which comprises (I) a nitrile monomer, (II) a monomer having an unsaturated double bond and carboxyl groups in a molecule, (III) a monomer having two or more of polymerizable double bonds in a molecule, and optionally, (IV) a monomer different from and copolymerizable with the monomers (I), (II) and (III) and a blowing agent encapsulated in the shell. The volume retention of the expanded microcapsules of the thermo-expansive microcapsules is 50% or more after loaded with 15 MPa.