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:
Mar. 09, 2010
Filed:
Dec. 27, 2005
Kimiyoshi Miura, Hatsukaichi, JP;
Sadao Yoshimoto, Iwakuni, JP;
Noboru Koga, Iwakuni, JP;
Takeshi Suzuki, Otake, JP;
Atsushi Shibuya, Funabashi, JP;
Kimiyoshi Miura, Hatsukaichi, JP;
Sadao Yoshimoto, Iwakuni, JP;
Noboru Koga, Iwakuni, JP;
Takeshi Suzuki, Otake, JP;
Atsushi Shibuya, Funabashi, JP;
Mitsui Chemicals, Inc., Minato-Ku, Tokyo, JP;
Abstract
A process for producing a cycloolefin resin composition comprising a cycloolefin resin and an additive by using a twin-screw extruder is provided, in which loss of the additive caused by volatilization through a vent during kneading is reduced and kneading of resin material with the additive can be sufficiently carried out. When the cycloolefin resin and the additive are kneaded by using a vented twin-screw extruder () to produce the cycloolefin resin composition containing the additive, an additive introduction opening () is disposed downstream of a vent () located nearest to a discharge opening () of the twin-screw extruder, and the additive is charged through the additive introduction opening located at a distance from the discharge opening of the twin-screw extruder in the range between longer than 10D and not longer than 30D.