STABILIZATION OF WATER-SOLUBLE POLYMERIC COMPOUND SOLUTION

STABILIZATION OF WATER-SOLUBLE POLYMERIC COMPOUND SOLUTION

PURPOSE:To improve the stability of a water-soluble high polymer, particularly the stability (prevention of reduction in viscosity) in the presence of a transition metal salt at high temperatures, by incorporating a sulfenamide compound alone or together with thiourea (compound) as a stabilizer with...

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Bibliographische Detailangaben
1. Verfasser: KONISHI HIKARU
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:PURPOSE:To improve the stability of a water-soluble high polymer, particularly the stability (prevention of reduction in viscosity) in the presence of a transition metal salt at high temperatures, by incorporating a sulfenamide compound alone or together with thiourea (compound) as a stabilizer with the solution. CONSTITUTION:(A) A sulfenamide compound, e.g. N-cyclohexyl-2-benzothia zolylsulfenamide or N-oxydiethylene-2-benzothiazolylsulfenamide alone or together with (B) thiourea or a derivative thereof, e.g. ethylenethiourea or guanylthiourea, in an amount of 0.001-10pts.wt., based on 100pts.wt. water-solu ble high polymer, as a stabilizer and incorporated with an aqueous solution consisting of the water-soluble high polymer, e.g. acrylamide (co)polymer or a partial hydrolyzate thereof, in 0.0001-20wt%, preferably 0.001-5wt% concen tration.