Phosphate salt as well as preparation method therefor and use thereof
AssigneesChina Petroleum & Chemical Corporation, Sinopec Research Institute of Petroleum Processing Co., Ltd.
InventorsZhengyang YE, Shuo SU, Jing MA, Yinong LIU
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Abstract
A phosphate ester salt has a bicyclic organic base structure as a cation and a phosphate ester structure as an anion. The phosphate ester salt can effectively improve the wear-resistance performance and load-carrying capacity of the lubricating oil at a relatively small dosage, and the lubricating oil shows excellent copper corrosion resistance. Also described are a process for preparing the phosphate ester salt, a lubricating oil and lubricating grease containing the phosphate ester salt, and use of the phosphate ester salt.
Claims17
A phosphate ester salt having a structure shown in the following formula (I):
- j(A)m+·k(P)n− (I)
- P is a group represented by formula (II),
- wherein two R1s are independent of each other and are each selected from hydrogen and optionally substituted hydrocarbyl or heterohydrocarbyl, or R1 is absent so that OR1 forms an O− group, and at least one of two R1s is selected from optionally substituted hydrocarbyl or heterohydrocarbyl;
- A is a group represented by formula (III),
- wherein,
- R3 is —(CH2)a—, wherein a is an integer of 2-8;
- R4 is —(CH2)b—, wherein b is an integer of 0-4,
- R5 is —(CH2)c—, wherein c is an integer of 1-5;
- X1 and X2 are each independently selected from CR6R6 and NR7, represents a single bond or a double bond, when X1 and/or X2 are NR7, it can be protonated to form a (NH)+R7 group,
- each R6 is present or absent, and each independently represents hydrogen, or an optionally substituted C1-C6 linear or branched alkyl;
- R7 is present or absent, and represents hydrogen, or an optionally substituted C1-C6 linear or branched alkyl;
- m is an integer of 1-3, n is an integer of 1-2, j is an integer of 1-2, k is an integer of 1-3, and k×n=j×m, when b is 0 and a double bond is formed between X1 and X2, the double bond may be rearranged so that a single bond is formed between X1 and X2, and a double bond is formed between X2 and the bridgehead N.
A process for preparing a phosphate ester salt, which process comprises:
- an acidic phosphate ester having a structure represented by formula (VII) is reacted with an organic base;
- wherein two R8s are each independently selected from hydrogen and an optionally substituted hydrocarbyl or heterohydrocarbyl, two Ras are not hydrogen at the same time;
- wherein the organic base contains a bicyclic organic base having a structure represented by formula (VIII),
- wherein,
- R3 is —(CH2)a—, wherein a is an integer of 2-8;
- R4 is —(CH2)b—, wherein b is an integer of 0-4,
- R5 is —(CH2)c—, wherein c is an integer of 1-5;
- X1 and X2 are each independently selected from CR6R6 and NR7, represents a single bond or a double bond,
- each R6 is present or absent, each independently represents hydrogen, or an optionally substituted C1-C6 linear or branched alkyl;
- R7 is present or absent, and represents hydrogen, or an optionally substituted C1-C6 linear or branched alkyl.
Dependencies are inferred from the claim text.