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특허 상세정보

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Method for producing improved water-absorbent resins

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) C08J-007/12   
미국특허분류(USC) 525/373 ; 524/430 ; 525/374 ; 525/387
출원번호 US-0697759 (1985-02-04)
우선권정보 JP-0019064 (1984-02-04)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 95  인용 특허 : 3
초록
▼

A method for easily, inexpensively and efficiently producing an improved water-absorbent resin having a high water absorbency and a high water absorption rate and capable of forming a gel having a high gel strength and nonstickiness, in which water-absorbent resin particles which contain water and a crosslinking agent and are in the semi-swollen state are agitated at an elevated temperature in the presence of an inert inorganic powder to conduct the crosslinking of the resin, while removing water, the water-absorbent resin containing a monomer units havi...

대표
청구항

A method for producing an improved water-absorbent resin which comprises allowing a water-absorbent resin in the form of particles to absorb a crosslinking agent and water in the presence of a powder of an inert inorganic material, and heating the resulting mixture with agitation, thereby effecting a crosslinking reaction of said resin and removal of water, said resin containing units of a monomer having a carboxyl group in the form of free acid or a salt as a constituent component thereof.

이 특허에 인용된 특허 (3)

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  3. Gross James R. (Lake Jackson TX) McFadden Russell T. (Freeport TX). Flexible water swellable crosslinked polyacrylate film. USP1977124061846.

이 특허를 인용한 특허 피인용횟수: 95

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