[특허]Method for production of absorbent resin

Method for production of absorbent resin 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08F-008/14
출원번호	US-0167077 (1993-12-15)
우선권정보	JP-0336392 (1992-12-16)
발명자 / 주소	Dairoku Yorimichi (Hyogo JPX) Nagasuna Kinya (Hyogo JPX) Yano Kazutaka (Hyogo JPX) Yanase Toru (Hyogo JPX) Masuda Yoshihiko (Hyogo JPX)
출원인 / 주소	Nippon Shokubai Co., Ltd. (Osaka JPX 03)
인용정보	피인용 횟수 : 58 인용 특허 : 0

초록 ▼

A method for the production of an absorbent resin retaining at a high level an absorption capacity without load, one of the basic physical properties of absorbent resin, and excelling in an absorption capacity under load is provided. The production is attained by mixing an absorbent resin as a base polymer possessing a carboxyl group with a first cross-linking agent possessing a solubility parameter (SP value) of not less than 12.5 (cal/cm3)½and exhibiting reactivity with the carboxyl group and a second cross-linking agent possessing a solubility parameter (SP value) of less than 12.5 (cal/cm3)½and exhibiting reactivity with the carboxyl group and then subjecting the resultant mixture to a heat treatment at a temperature not less than 160°C.

대표청구항 ▼

A method for the production of an absorbent resin which comprises mixing an absorbent resin as a base polymer possessing a carboxyl group with a first cross-linking agent possessing a solubility parameter (SP value) of not less than 12.5 (cal/cm3)½and exhibiting reactivity with said carboxyl group and a second cross-linking agent possessing a solubility parameter (SP value) of less than 12.5 (cal/cm3)½and subjecting the resultant mixture to a heat treatment at a temperature of not less than 160°C.

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