Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1995-12-28
1998-06-02
Lipman, Bernard
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
5153283, 5153285, 5153294, 5153295, 515380, 515382, 515384, C08F 832, C08F 814
Patent
active
057600805
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to an absorbing agent suited for use in sanitary goods such as paper diaper (disposable diaper), sanitary napkin, incontinence pad, etc., and a method of manufacturing the same and also relates to an absorbent product containing such absorbing agent.
BACKGROUND OF THE INVENTION
Recently, an absorbent resin is widely used in sanitary goods such as paper diaper, sanitary napkin, incontinence pad, etc., for the purpose of absorbing liquid.
Examples of known absorbent resins include: a partially neutralized crosslinked polymer of polyacrylic acid (Japanese Laid-Open Patent Publication No. 84304/1980 (Tokukaisho 55-84304), Japanese Laid-Open Patent Publication No. 108407/1980 (Tokukaisho 55-108407) and Japanese Laid-Open Patent Publication No. 133413/1980 (Tokukaisho 55-133413)); a hydrolyzed graft polymer of starch-acrylonitrile (Japanese Examined Patent Publication No. 43995/1974 (Tokukosho 46-43995)); a neutralized graft polymer of starch-acrylic acid (Japanese Laid-Open Patent Publication No. 125468/1976 (Tokukaisho 51-125468)); a saponified copolymer of vinyl acetate-acrylic ester (Japanese Laid-Open Patent Publication No. 14689/1977 (Tokukaisho 52-14689)); a hydrolyzed copolymer of acrylonitrile or of acrylamide (Japanese Examined Patent Publication No. 15959/1978 (Tokukosho 53-15959)); a crosslinked polymer of cationic monomer (Japanese Laid-Open Patent Publication No. 154709/1983 (Tokukaisho 58-154709) and Japanese Laid-Open Patent Publication No. 154710/1983 (Tokukaisho 58-154710)).
Notable properties of the absorbent resin include absorbing capacity and absorbency under pressure when it is in contact with an aqueous liquid like a body fluid, gel strength, and absorbing power of absorbing liquid from a base material containing an aqueous liquid, etc. Conventionally, the absorbent resins having some of the above-mentioned properties which show desirable properties (absorption properties) in their applications of paper diaper, sanitary napkin, etc., as well as absorbent materials and the absorbent product using such absorbent resins have been proposed.
Examples of such absorbent resins, absorbent materials and absorbent products include: an absorbent resin disclosing a combination of a specific gel capacity, shear modulus and an extraction polymer content (U.S. Pat. No. 4,654,039); an absorbent resin having predetermined ranges of absorbing capacity and absorbency under pressure and gel stability, and a paper diaper and a sanitary napkin using such absorbent resin (Japanese Laid-Open Patent Publication No. 185550/1985 (Tokukaisho 60-185550)), (Japanese Laid-Open Patent Publication No. 185551/1985 (Tokukaisho 60-185551)) and (Japanese Laid-Open Patent Publication No. 185804/1985 (Tokukaisho 60-185804)); a paper diaper using an absorbent resin having predetermined ranges of absorbing capacity, absorbency under pressure and a gel stability (Japanese Laid-Open Patent Publication No. 185805/1985 (Tokukaisho 60-185805)); an absorbent product having predetermined absorbing capacity, absorbing power and water soluble content (Japanese Laid-Open Patent Publication No. 21902/1988 (Tokukaisho 63-21902)); an absorbent sanitary product including an absorbent resin having predetermined ranges of absorbing capacity, absorbing capacity under pressure, and a gel breaking strength (Japanese Laid-Open Patent Publication No. 99861/1988 (Tokukaisho 63-99861)); a paper diaper including an absorbent resin having predetermined ranges of absorbing capacity and absorbency under pressure (Japanese Laid-Open Patent Publication No. 34167/1990 (Tokukaihei 2-34167)); an absorbing agent containing an absorbent resin having predetermined ranges of absorbing capacity under pressure and particle diameter (European Patent No. 339,461); an absorbing agent including at least a predetermined amount of an absorbent resin having predetermined ranges of absorbency under pressure and absorbing capacity under pressure in a short period of time (European Patent No. 443,627); an absorbing synt
REFERENCES:
patent: 4654039 (1987-03-01), Brandt et al.
patent: 4666975 (1987-05-01), Yamasaki et al.
patent: 5147343 (1992-09-01), Kellenberger
patent: 5149335 (1992-09-01), Kellenberger et al.
patent: 5236427 (1993-08-01), Hamajima et al.
patent: 5300565 (1994-04-01), Berg et al.
patent: 5314420 (1994-05-01), Smith et al.
Fujino Shin-ichi
Masuda Yoshihiko
Nagasuna Kinya
Wada Katsuyuki
Lipman Bernard
Nippon Shokubai Co. , Ltd.
LandOfFree
Absorbing agent, process of manufacturing same, and absorbent pr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Absorbing agent, process of manufacturing same, and absorbent pr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Absorbing agent, process of manufacturing same, and absorbent pr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1460324