Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1995-02-15
1997-03-11
Smith, Jeffrey T.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
5253294, 5253301, 5253306, C08F 814
Patent
active
056102089
ABSTRACT:
A method for the production of a water-absorbent agent comprises mixing an absorbent resin containing a carboxyl group with an additive soluble in the aqueous solution of at least one member selected from the group consisting of inorganic acids, organic acids, and polyamino acids and a cross-linking agent capable of reacting with the carboxyl group. A water-absorbent agent obtained by adding from 0.005 to 8 parts by weight of an epoxy compound to 100 parts by weight of a water-absorbent resin, exhibiting an absorption capacity without load of at least 45 (g/g), an absorption capacity under load of 20 g/cm.sup.2 of not less than 30 (ml/g) and having a residue amount of an epoxy compound of not more than 2 ppm. A water-absorbent composition comprises a polyamino acid (salt) and a water-absorbent resin containing a carboxyl group.
REFERENCES:
patent: Re33839 (1992-03-01), Chmelir et al.
patent: 4190563 (1980-02-01), Bosley et al.
patent: 4654039 (1987-03-01), Brandt et al.
patent: 5322896 (1994-06-01), Ueda et al.
patent: 5422405 (1995-06-01), Dairoku et al.
Dairoku Yorimichi
Harada Nobuyuki
Ishizaki Kunihiko
Masuda Yoshihiko
Motono Yoshihiro
Nippon Shokubai Co. , Ltd.
Smith Jeffrey T.
LandOfFree
Water-absorbent agent, method for production thereof, and water- does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Water-absorbent agent, method for production thereof, and water-, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water-absorbent agent, method for production thereof, and water- will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-444120