摘要:
The invention relates to the use of compounds of the formula (1) in which R1 is C1- to C29-alkyl, C2- to C29-alkenyl, C6- to C30-aryl or C7- to C30-alkylaryl, and anionic surfactants as corrosion inhibitors.
摘要:
The invention relates to the use of polyesters whose molecular weight ranges from 500 and 500,000 g/mol and which are obtainable by reacting a compound of formula (1), wherein n is 0, 1 or 2 and A is an optionally substituted C1-C40 group with a compound of the formula (2): B(OH)m, in which m is a number ranging from 2 to 10 and B is an optionally substituted C2-C40 group, in quantities ranging from 0.01 to 2% by weight for preventing the formation of gas hydrates in aqueous phases in connection with a gaseous, liquid, or solid phase.
摘要:
Disclosed is the use of alkoxylated dendrimers for breaking oil/water emulsions. The alkoxylated dendrimers have a molecular weight of from 2400 to 100 000 g/mol and have been alkoxylated with C2-C4-alkylene oxide groups or a mixture of such alkylene oxide groups such that the alkoxylated dendrimer has a degree of alkoxylation of from 1 to 100 alkylene oxide units per free OH group. The alkoxylated dendrimers are added to the oil/water emulsions in amounts of from 0.0001 to 5% by weight, based on the oil content of the emulsion to be demulsified.
摘要:
The present invention relates to the use of alkoxylated polyglycerols preparable by polycondensation of glycerol and subsequent alkoxylation for demulsifying water-oil emulsions, in particular in the production of crude oil from crude oil/water emulsions. The invention provides for the use of alkoxylated polyglycerols with a molecular weight of from 250 to 100,000 units which comprise 2 to 100 glycerol units whose free OH groups are alkoxylated with C2–C4-alkylene oxide groups or a mixture of such alkylene oxide groups so that the alkoxylated polyglycerol has a degree of alkoxylation of from 1 to 100 alkylene oxide units per free OH group. The alkoxylated polyglycerols of the present invention are employed for demulsifying oil/water emulsions in amounts of from 0.0001 to 5% by weight, based on the oil content of the emulsion to be demulsified.
摘要:
The present invention relates to the preparation of Ω-(dimethylisopropenylbenzylurethane) polyalkylene glycols with α-alkoxy or α-dihydroxy groups and to the use thereof as hydrolysis-stable macromonomers for the dispersion and crosslinking of polymers in which, A is C2-C4-alkylene, m is an integer from 5 to 900, and R is C1-C20-alkyl, C6-C18-aryl or a radical according to formula 2a, 2b, 2c, 3a, 3b or 3c which is bonded to the terminal oxygen atom of the alkoxy group (A-O) in formula 1 via the valence denoted by *, and in which A is not exclusively C3- or C4-alkylene.
摘要:
The invention relates to polymers that can be obtained by: A) reacting an epoxidized ester, which is selected from one or more unsaturated fatty acids having 8 to 26 C atoms and a polyol having 2 to 6 OH groups, with a monoamine, diamine or polyamine; B) alkoxylating the polyamine obtained hereby with a C2 to C4 alkylene oxide in molar excess so that the average degree of alkoxylation per OH group ranges from 1 to 100. The polymers have a numerical average molecular weight ranging from 500 to 100,000 g/mol. The invention also relates to the use of these polymers in quantities ranging from 0.0001 to 5% by weight with regard to the oil as demulsifiers for oil-in-water emulsions.
摘要翻译:本发明涉及可以通过以下方法获得的聚合物:A)使选自具有8至26个C原子的一种或多种不饱和脂肪酸和具有2-6个OH基团的多元醇的环氧化酯与单胺,二胺或 多胺 B)以C摩尔过量的方式将C 2 N 2 C 2 C 2 O 3烷氧基化,使得每OH基团的平均烷氧基化度在1至100范围内。 聚合物的数均分子量为500〜100,000g / mol。 本发明还涉及这些聚合物在0.0001至5重量%范围内的用途,作为油包水乳液的破乳剂。