Reaktionsgleichung
[C:1]([OH:5])(=[O:4])[CH:2]=[CH2:3].[C:6]([NH2:10])(=[O:9])[CH:7]=[CH2:8].C(C=CC(N)=O)C=CC(N)=O.C(N(CC=C)CC=C)C=C.N>O>[C:1]([OH:5])(=[O:4])[CH:2]=[CH2:3].[C:6]([NH2:10])(=[O:9])[CH:7]=[CH2:8]Komponenten
Edukt 5
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Reaktionsbedingungen
- Temperatur
- 10 °C
Versuchsvorschrift
148 g of acrylic acid, 372 g of acrylamide solution (40%), 0.6 g of methylenebisacrylamide, and 1.2 g of triallylamine were initially dissolved in 260 g of water in a polymerization vessel. Thereafter, the monomer solution was neutralized with 126 g of ammonia (25%) to a neutralization level of 90%. The monomer solution then was cooled to 10° C. and purged with nitrogen. Following addition of the initiator solutions (0.8 g of ABAH, 1.0 g of sodium peroxodisulfate, 0.2 g of hydrogen peroxide, and 0.05 g of ascorbic acid, each in 5 ml of water), the polymerization was initiated. The maximum temperature of 100° C. was reached within 10 minutes. After completed polymerization, the polymer was heated at 140° C. for 1.5 hours and milled to the desired grain fraction. A crosslinked acrylic acid/acrylamide copolymer as ammonium salt had been formed. The absorptive capacity for a 0.1% fertilizer solution was 132 ml/g, and the residual monomer content was 10 ppm of acrylamide and 25 ppm of acrylic acid.
Aufarbeitung
- custompurged with nitrogen
- additionaddition of the initiator solutions (0.8 g of ABAH, 1.0 g of sodium peroxodisulfate, 0.2 g of hydrogen peroxide, and 0.05 g of ascorbic acid
- custompolymerization
- temperaturethe polymer was heated at 140° C. for 1.5 hours
- custommilled to the desired grain fraction
Quellen und Nachweise
- ORD-Eintrag
- ord-c8f53df4b4cd469c841973ee924d3c7c
- Quelldatensatz
- uspto-grants-2006_04
- Patentnummer
- US07030199B1
Verknüpfte Notizen
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