[특허]Water absorbing starch-acrylonitrile graft copolymers fumed silica or alumina modified to improve rate of absorption for

[미국특허] Water absorbing starch-acrylonitrile graft copolymers fumed silica or alumina modified to improve rate of absorption for 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08L-003/00
출원번호	US-0556267 (1975-03-07)
발명자 / 주소	Duchane David V. (Ann Arbor MI)
출원인 / 주소	Kimberly-Clark Corporation (Neenah WI 02)
인용정보	피인용 횟수 : 24 인용 특허 : 0

초록 ▼

An improvement in the composition of particulate, water-insoluble alkali metal carboxylate salts of starch-acrylonitrile graft copolymers of the type which are produced by saponifying starch-acrylonitrile graft copolymers with an alkali metal base in an aqueous alcoholic medium and which particulate copolymer in its unimproved form is capable of absorbing in excess of 50 parts of aqueous fluids per part of copolymer when saturated. The improvement comprises the intermixture with the particulate copolymer of fumed silica or fumed alumina particles in an amount sufficient to increase markedly the rate at which the mixture absorbs physiological fluid as compared to the rate of absorption for such fluids exhibited by the copolymer before the fumed material is added. The mixture also minimizes the undesirable dusting tendency which is a characteristic of the particulate copolymer in the absence of the fumed silica or alumina.

대표청구항 ▼

An improvement in the composition of particulate, water-insoluble alkali metal carboxylate salts of starch-acrylonitrile graft copolymers of the type which are produced by saponifying a starch-acrylonitrile graft copolymer with an alkali metal base in an aqueous alcoholic medium and which particulate copolymer in its unimproved form is capable of absorbing in excess of 50 parts by weight of aqueous fluids per part of copolymer, and in which the molar ratio of the acrylonitrile to the starch in the graft copolymers is in the range of 2:1 to 30:1; said improvement comprising modifying said particulate copolymer by mixing therewith a minor quantity of a fumed oxide selected from the group consisting of fumed silica or fumed alumina in an amount sufficient to increase the rate at which said modified copolymer absorbs saline physiological fluids as compared to the rate at which said unimproved copolymer absorbs said fluids without reducing significantly the total absorbent capacity otherwise exhibited by said unimproved copolymer while minimizing the tendency of said copolymer to dust.

이 특허를 인용한 특허 (24) 인용/피인용 타임라인 분석

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Gilman Thomas Harry (Appleton WI) Honer Peter Douglas (Neenah WI), Apparatus for measuring the crush recovery of an absorbent article.
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Isaac Goldhirsch IL; Steven A. Orszag, Composite absorbent structure and method.
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Koehler, Arthur Joseph; Huang, Gene Xiaoqing; Wang, Chengming; Hwang, Chuming Luke; Allende-Blanco, Mel; Macura, Matthew Joseph, Computer based models for absorbent articles.
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Wang, Chengming; Huang, Gene Xiaoqing; Koehler, Arthur Joseph; Hwang, Chuming Luke, Computer based models for absorbent articles.
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Wang, Chengming; Huang, Gene Xiaoqing; Koehler, Arthur Joseph; Hwang, Chuming Luke, Computer based models for absorbent articles.
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Pursell, Taylor; Shirley, Jr., Arthur R.; Cochran, Keith D.; Holt, Timothy G.; Pedeen, Gregory S., Controlled release agricultural products and processes for making same.
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Fell, David A.; Bosselaar, Cornelius, High capacity absorbent structure and method for producing same.
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Mazurak, Peter A.; Fries, Donald M., Highly absorbent materials having good wicking characteristics which comprise hydrogel particles and surfactant treated filler.
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Weaver Mary Ollidene (Peoria IL) Bagley Edward B. (Morton IL) Fanta George F. (Peoria IL) Doane William M. (Morton IL), Highly-absorbent starch-containing polymeric compositions.
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Weber Mary Eva Garvie ; Gryskiewicz Stanley Michael ; Mayberry Pamela Jean ; Davis James Arthur ; Morman Michael Tod ; Meitner Gary Howard ; Collier ; IV Leslie Warren ; Kollin Nancy Donaldson ; Cole, Liquid absorbent material for personal care absorbent articles and the like.
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Suskind Stuart P. ; Pearlstein Leonard, Method of making high performance superabsorbent material.
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Kingery, Gary L., Motor fluid absorbent pad.
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Kingery, Gary L., Motor fluid absorbent pad.
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Hassall ; Jr. Thomas (Wilmington DE), Polyvinyl alcohol dust suppression by admixing polyglycol.
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William G. Reeves ; Emmanuelle C. Damay ; Wendy L. Hamilton ; Patsy A. Hansen ; Jack N. Lindon ; Heather A. Sorebo, Process for preparing superabsorbent-containing composites.
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Sasse Philip Anthony ; Pike Richard Daniel, Process for producing fine fibers and fabrics thereof.
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William G. Reeves ; Emmanuelle C. Damay ; Wendy L. Hamilton ; Patsy A. Hansen ; Jack N. Lindon ; Heather A. Sorebo, Superabsorbent-containing composites.
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Gilman Thomas Harry, Thin absorbent article.
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Diamantoglou Michael (Erlenbach DEX) Josefiak Christoph (Erlenbach DEX) Magerlein Helmut (Obernburg DEX), Water-swellable composition, synthesis and use thereof.
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Kaczmarzyk Leonard M. (Neenah WI) Hlaban James J. (Neenah WI) McKelvey Patricia J. (Appleton WI), Wrapper structure for tampons containing superabsorbent material.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Water absorbing starch-acrylonitrile graft copolymers fumed silica or alumina modified to improve rate of absorption for 원문보기