Anionic-cationic-nonionic surfactant, production and use thereof
AssigneesChina Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology, Sinopec
InventorsYingcheng Li, Songyuan Gu, Weidong Zhang, Xinning Bao, Ou Sha, Zhiqin Shen, Yiqing Yang, Xiaodong Zhai
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Abstract
An anionic-cationic-nonionic surfactant represented by the formula (I) exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present anionic-cationic-nonionic surfactant, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.
Claims7
An anionic-cationic-nonionic surfactant represented by formula (I-3) or formula (I-4), with the proviso that, at least one N atom contained in the molecular structure thereof bonds to Rh and X so as to form into a quaternary ammonium salt/hydroxide group represented by the formula
- in which:
- the group N+ represents the at least one N atom in the form of quaternary nitrogen cation;
- the group Rh represents a second optionally substituted C5-50 monocyclic or polycyclic cycloalkyl, a second optionally substituted C2-50 linear or branched alkenyl, or a second optionally substituted C6-50 aryl;
- the group X− represents a halogen ion or hydroxide ion, and
- wherein “second optionally substituted” refers to optionally substituted by one or more substituent selected from the group consisting of oxo, hydroxyl, a C1-20 linear or branched alkyl, a C5-10 monocyclic or polycyclic cycloalkyl, a C2-20 linear or branched alkenyl, and a C6-20 aryl,
- wherein, in formula (I-3):
- the plural group Rc is identical with or different from one another, each independently selected from the group consisting of a third optionally substituted C8-20 linear or branched alkyl, a third optionally substituted C8-20 linear or branched alkenyl, a third optionally substituted C8-20 linear or branched alkyl carbonyl;
- and a third optionally substituted C8-20 linear or branched alkenyl carbonyl;
- the plural group Rd is identical with or different from one another, each independently selected from the group consisting of a third optionally substituted C1-10 linear or branched alkylene, a third optionally substituted C2-10 linear or branched alkenylene, a third optionally substituted C1-10 linear or branched alkylene carbonyl, a third optionally substituted C2-10 linear or branched alkenylene carbonyl, a third optionally substituted carbonyl C1-10 linear or branched alkylene carbonyl, and a third optionally substituted carbonyl C2-10 linear or branched alkenylene carbonyl;
- the numerical value x′″ represents 1;
- the plural group Rp is identical with or different from one another, each independently selected from the group consisting of a group represented by the formula
- hydrogen, a third optionally substituted C1-50 linear or branched alkyl, a third optionally substituted C5-50 monocyclic or polycyclic cycloalkyl, a third optionally substituted C2-50 linear or branched alkenyl and a third optionally substituted C6-50 aryl, with the proviso that at least one of the groups Rp represents a group represented by the formula
- in which:
- the plural numerical value m′ is identical with or different from one another, each independently represents a value from 15 to 100, plural numerical value n′ is identical with or different from one another, each independently represents a value from 0 to 35, with the proviso that the sum of all numerical values m′ and all numerical values n′ is greater than 0 but not greater than 100;
- the plural group L is identical with or different from one another, each independently selected from the group consisting of a third optionally substituted C1-10 linear or branched alkylene and a third optionally substituted C2-10 linear or branched alkenylene, the plural group Salt is identical with or different from one another, each independently represents a group represented by the formula -A−(M)r+, wherein the group A represents a carboxylate ion (COO−) or a sulfonate ion (SO3−);
- the group M represents alkali metal, alkaline earth metal or ammonium (NH4),
- wherein when the group M represents alkali metal or ammonium, r=1;
- and
- when the group M represents alkaline earth metal, r=0.5,
- with the proviso that at least one of the plural group Rc comprises in molecular structure thereof a C8 linear moiety, and the overall average number of the units —O—CH2—CH2— and/or
- is 10.0 or more,
- wherein, in formula (I-4):
- the plural group Rc represents a third optionally substituted C1-20 linear or branched alkyl, a third optionally substituted C2-20 linear or branched alkenyl, a third optionally substituted C1-20 linear or branched alkyl carbonyl or a third optionally substituted C2-20 linear or branched alkenyl carbonyl;
- the plural group Rd is identical with or different from one another, each independently selected from the group consisting of a third optionally substituted C1-10 linear or branched alkylene, a third optionally substituted C2-10 linear or branched alkenylene, a third optionally substituted C1-10 linear or branched alkylene carbonyl, a third optionally substituted C2-10 linear or branched alkenylene carbonyl, a third optionally substituted carbonyl C1-10 linear or branched alkylene carbonyl and a third optionally substituted carbonyl C2-10 linear or branched alkenylene carbonyl;
- the group Y represents N or O, with the proviso that when the group Y represents N, a=1, when the group Y represents O, a=0;
- the numerical value x″″ represents 1;
- the plural group Rp1 is identical with or different from one another, each independently selected from the group consisting of a group represented by the formula
- hydrogen, a third optionally substituted C1-50 linear or branched alkyl, a third optionally substituted C5-50 monocyclic or polycyclic cycloalkyl, a third optionally substituted C2-50 linear or branched alkenyl and a third optionally substituted C6-50 aryl, with the proviso that at least one of the groups Rp1 represents a group represented by the formula
- the plural group Rp2 is identical with or different from one another, each independently is a group represented by the formula
- the plural group Rp3 is identical with or different from one another, each independently is a group represented by the formula
- the plural numerical value m′ is identical with or different from one another, each independently represents a value from 15 to 100,
- the plural numerical value n′ is identical with or different from one another, each independently represents a value from 0 to 35,
- the plural numerical value m″ is identical with or different from one another, each independently represents a value from 0.5 to 100,
- the plural numerical value n″ is identical with or different from one another, each independently represents a value from 0 to 100,
- the plural numerical value m′″ is identical with or different from one another, each independently represents a value from 0.5 to 100,
- the plural numerical value n″ is identical with or different from one another, each independently represents a value from 0 to 100, with the proviso that the sum of all numerical values m′ and all numerical values m″ and all numerical values m′″ and all numerical values n′ and all numerical values n″ and all numerical values n′″ is greater than 0 but not greater than 200;
- wherein the plural group L is identical with or different from one another, each independently selected from the group consisting of a third optionally substituted C1-10 linear or branched alkylene and a third optionally substituted C2-10 linear or branched alkenylene,
- wherein the plural group Salt is identical with or different from one another, each independently represents a group represented by the formula -A−(M)r+,
- wherein the group A− represents a carboxylate ion (COO−) or a sulfonate ion (SO3−);
- the group M represents alkali metal, alkaline earth metal or ammonium (NH4);
- wherein, when the group M represents alkali metal or ammonium, r=1;
- when the group M represents alkaline earth metal, r=0.5;
- with the proviso that at least one of the plural group Rc and the plural group Rh comprises in molecular structure thereof a C8 linear moiety, and the overall average number of the units —O—CH2—CH2— and/or
- is 10.0 or more,
- wherein “third optionally substituted” refers to optionally substituted by one or more substituent selected from the group consisting of hydroxyl, a C1-20 linear or branched alkyl, a C5-10 monocyclic or polycyclic cycloalkyl, a C2-20 linear or branched alkenyl, and a C6-20 aryl.
Dependencies are inferred from the claim text.