Soil-improving compositions - contg. finely ground clay materials aggregated with organic substances

In a process for the production of extendable colloidal aggregates for soil-improving agents from finely ground clay materials (e.g. bentonite) by incorporating known org. additives which seve directly to promote aggregation (e.g. urea of methylcellulose), there are also added organic cpds. having a...

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Bibliographic Details
Main Author SEIFERT,ERNST,-LANDW
Format Patent
LanguageEnglish
German
Published 22.04.1976
Subjects
CHEMISTRY
FERTILISERS
FERTILISERS CHARACTERISED BY THEIR FORM
MANUFACTURE THEREOF
METALLURGY
MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05
MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS
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Summary:In a process for the production of extendable colloidal aggregates for soil-improving agents from finely ground clay materials (e.g. bentonite) by incorporating known org. additives which seve directly to promote aggregation (e.g. urea of methylcellulose), there are also added organic cpds. having an effect on the water-stability of the aggregates. One group of pref. water-stabilising additives is hydrocarbon cpds. with free charges or functional groups such as e.g. unsaturated alcohols or monocarboxylic acids, these cpds. being used in an amount of ca 2-5%. Another pref. group of water-stabilising additives is saccharides (e.g. sucrose), these being used in an amount of ca 5-15%. The additives impart lasting hydrophilisation to the colloidal aggregates, so that soil treated with teh new soil improving agens have long-lasting water-retaining properties. It is advantageous to use relatively high concentrations of saccharides because these undergo rapid microbial reaction to form new waterstable, hydrophilic structures.
Bibliography:Application Number: DE19742448740