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. 28, 2009
Filed:
Sep. 19, 2003
Takahisa Miyawaki, Sodegaura, JP;
Yasushi Mizuta, Sodegaura, JP;
Fumito Takeuchi, Sodegaura, JP;
Kenji Itou, Sodegaura, JP;
Tadashi Kitamura, Sodegaura, JP;
Hiroyuki Asakura, Sodegaura, JP;
Kenichi Yashiro, Sodegaura, JP;
Kei Nagata, Sodegaura, JP;
Takahisa Miyawaki, Sodegaura, JP;
Yasushi Mizuta, Sodegaura, JP;
Fumito Takeuchi, Sodegaura, JP;
Kenji Itou, Sodegaura, JP;
Tadashi Kitamura, Sodegaura, JP;
Hiroyuki Asakura, Sodegaura, JP;
Kenichi Yashiro, Sodegaura, JP;
Kei Nagata, Sodegaura, JP;
Mitsui Chemicals, Inc., Minato-Ku, Tokyo, JP;
Sharp Kabushiki Kaisha, Osaka-Shi, Osaka, JP;
Abstract
A liquid crystal sealing agent composition that is a one-component light and heat-curable resin composition containing: (1) a solid epoxy resin having a ring and ball method softening temperature of 40° C. or above; (2) an acrylate monomer and/or a methacrylate monomer, or an oligomer thereof; (3) a thermoplastic polymer having a ring and ball method softening temperature of 50 to 120° C., the thermoplastic polymer being obtained by copolymerizing an acrylate monomer and/or a methacrylate monomer with a monomer copolymerizable therewith; (4) a light-activated radical polymerization initiator; and (5) a latent epoxy curing agent. The light and heat curable liquid crystal sealing agent composition is employable in one drop fill, is excellent in properties of a cured product particularly after first-stage light curing, achieves stable cell gap after cell gap formation, permits prevention of contamination of the liquid crystal in second-stage heat curing, is excellent in curing properties in shaded area, and shows superior bonding reliability.