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. 22, 2014
Filed:
Mar. 20, 2007
Takahiro Kitano, Himeji, JP;
Yorimichi Dairoku, Himeji, JP;
Sumio Okuda, Ibo-gun, JP;
Kozo Nogi, Kakogawa, JP;
Motohiro Imura, Shiki-gun, JP;
Takahiro Kitano, Himeji, JP;
Yorimichi Dairoku, Himeji, JP;
Sumio Okuda, Ibo-gun, JP;
Kozo Nogi, Kakogawa, JP;
Motohiro Imura, Shiki-gun, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
The present invention provides a method for being capable of sufficiently exerting property improvement effect by the addition of additive particles other than water-absorbing resin to water-absorbing resin particles. The problems can be solved by using additive particles having over cohesive particles in an amount equal to or less than a predetermined amount, or by using the additive particles by crushing or classifying in advance, before mixing with water-absorbing resin particles. Alternatively, the problem can be solved by subjecting a mixture of the water-absorbing resin particles and the additive particles to pneumatic transportation processing, in particular, in a heated state, after mixing or at the same time as mixing. Further, the present invention provides a water-absorbing resin composition, which is capable of stably exerting high-level property. The problems can be solved by a water-absorbing resin composition, where the addition amount of additive particles and amount of free additive particles satisfies a predetermined relation.