摘要:
The present invention relates to the use of a product obtainable by the reaction of an alkoxylated fatty amine with a dicarboxyhc acid derivative, followed by partial or total quaternization of the reaction product obtained; or by reacting a product with a dicarboxylic acid derivative, followed by partial or total quaternization of the reaction product obtained. The product consists of >60% w/w of oligomers/polymers with at least two alkoxylated amine units and one or more diacid/acid anhydride unit or >50% w/w of oligomers/polymers with at least two alkoxylated amine units and two or more diacid/acid anhydride units; as a corrosion inhibitor for metal surfaces. The invention also relates to a method for protecting a metal surface from corrosion by contacting the metal surface with said corrosion inhibitor.
摘要:
A bitumen containing composition, comprising bitumen and a phosphate compound, which is obtainable by the esterification of a polyhydric alcohol having at least three hydroxyl groups, with a carboxylic acid having 8-24 carbon atoms, preferably 12-22 carbon atoms, or a derivative thereof, wherein at least one but not all of the hydroxyl groups are esterified, provided that when the polyhydric alcohol has 5 or more hydroxyl groups then at least two but not all of the hydroxyl groups are esterified, followed by reacting the ester obtained with a phosphatising reagent; wherein the said composition is not a bitumen-in-water emulsion.
摘要:
The present invention relates to the use of a product obtainable by the reaction of a fatty acid, or mixture of acids, having the formula R1COOH (I); and a dicarboxylic acid or a derivative thereof having the formula (IIa) or (IIb) with an alkoxylated fatty amine having the formula (III) or a partial or wholly quaternized derivative thereof; optionally said reaction between the fatty acid, the dicarboxylic acid and the alkoxylated fatty amine is being followed by a further reaction step wherein part or all of the nitrogen atoms are quaternized by reaction with an alkylating agent R5X; as a corrosion inhibitor for metal surfaces. The present invention also relates to such products and to methods for their production.
摘要:
The present invention relates to the use of a polyesteramine or a polyester polyquaternary ammonium compound as a corrosion inhibitor for metal surfaces, and to a method for protecting a metal surface from corrosion by contacting the metal surface with said corrosion inhibitor.
摘要:
The present invention relates to the use of a polymeric quaternary ester product as a collector in a froth flotation process, to a method for froth flotation utilizing the polymeric quaternary ester, to the polymeric quaternary ester as such, and to methods for the production of the polymeric quaternary ester.