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1. WO2007087359 - METHODS FOR PRODUCING SUPERABSORBENT POLYMERS FOR USE IN AGRICULTURAL APPLICATIONS

Publication Number WO/2007/087359
Publication Date 02.08.2007
International Application No. PCT/US2007/001920
International Filing Date 25.01.2007
IPC
C08B 37/00 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
BPOLYSACCHARIDES; DERIVATIVES THEREOF
37Preparation of polysaccharides not provided for in groups C08B1/-C08B35/110; Derivatives thereof
CPC
C08B 31/006
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
BPOLYSACCHARIDES; DERIVATIVES THEREOF
31Preparation of derivatives of starch
003Crosslinking of starch
006Crosslinking of derivatives of starch
C08F 251/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
251Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
C08F 8/12
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
8Chemical modification by after-treatment
12Hydrolysis
C08J 2303/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G
2303Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
04Starch derivatives
C08L 3/04
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
3Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
04Starch derivatives ; , e.g. crosslinked derivatives
Applicants
  • ABSORBENT TECHNOLOGIES, INC. [US]/[US] (AllExceptUS)
  • SAVICH, Milan H. [US]/[US] (UsOnly)
  • FORNI, Rodney L. [US]/[US] (UsOnly)
  • CHAMBERS, William [US]/[US] (UsOnly)
Inventors
  • SAVICH, Milan H.
  • FORNI, Rodney L.
  • CHAMBERS, William
Agents
  • BETHARDS, Matthew S.
Priority Data
60/762,09825.01.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHODS FOR PRODUCING SUPERABSORBENT POLYMERS FOR USE IN AGRICULTURAL APPLICATIONS
(FR) PROCÉDÉS DE PRODUCTION DE POLYMÈRES SUPERABSORBANTS POUR APPLICATIONS AGRICOLES
Abstract
(EN)
Methods and systems for producing superabsorbent polymer particles for use in agricultural applications are disclosed. A monomer is graft polymerized onto a starch to form a starch graft copolymer. The moisture content of the starch graft copolymer is reduced through the use of an extruder.
(FR)
Procédés et systèmes de production de particules polymères superabsorbantes pour applications agricoles. On réalise la polymérisation, avec greffage, de monomère sur un amidon, pour former un copolymère à greffe sur amidon. La teneur en humidité de ce copolymère est réduite par l'utilisation d'une extrudeuse.
Also published as
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