US 12,365,847 B2
Lubricity improver composition for fuel oil and use thereof
Jianmin Lin, Beijing (CN); Xin Xia, Beijing (CN); Baoshi Li, Beijing (CN); Zhiping Tao, Beijing (CN); and Yan Li, Beijing (CN)
Assigned to CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and SINOPEC RESEARCH INSTITUTE OF PETROLEUM PROCESSING CO., LTD., Beijing (CN)
Appl. No. 18/575,787
Filed by CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing (CN); and SINOPEC RESEARCH INSTITUTE OF PETROLEUM PROCESSING CO., LTD., Beijing (CN)
PCT Filed Jun. 30, 2022, PCT No. PCT/CN2022/102570
§ 371(c)(1), (2) Date Dec. 29, 2023,
PCT Pub. No. WO2023/274335, PCT Pub. Date Jan. 5, 2023.
Claims priority of application No. 202110740397.8 (CN), filed on Jun. 30, 2021.
Prior Publication US 2024/0368490 A1, Nov. 7, 2024
Int. Cl. C10L 1/19 (2006.01); C10L 1/188 (2006.01)
CPC C10L 1/1905 (2013.01) [C10L 1/1881 (2013.01); C10L 2200/0446 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A lubricity improver composition for fuel oil, comprising a component A and a component B,
wherein the component A is a dicarboxylic acid monoester of formula (I-1):

OG Complex Work Unit Chemistry
wherein n is an integer of 2 to 6, R is a C3-20 hydrocarbyl group, and the component A is selected from maleic acid monoester, fumaric acid monoester, citraconic acid monoester, methyl fumaric acid monoester, 2,3-dimethyl maleic acid monoester, glutaconic acid monoester, and combinations thereof,
or
the component A is a dicarboxylic acid monoester of formula (I-2):

OG Complex Work Unit Chemistry
wherein p is an integer from 1 to 8, R is a C3-20 hydrocarbyl group, and the component A is selected from malonic acid monoester, succinic acid monoester, glutaric acid monoester, adipic acid monoester, azelaic acid monoester, sebacic acid monoester, and combinations thereof,
or
the component A is a dicarboxylic acid monoester of formula (I-4):

OG Complex Work Unit Chemistry
wherein R8 is a C2-10 divalent hydrocarbyl group; R9 is hydrogen or a hydrocarbyl group, R10 is a divalent hydrocarbyl group, and the total number of carbon atoms of R9 and R10 is 15-21, and the total number of carbon-carbon double bonds is 0-3; R11 is hydrogen or a C1-10 hydrocarbyl group; and
the component B is selected from C8-24 long-chain fatty acids, polyol esters thereof, and mixtures thereof,
wherein a total amount of the component A and the component B is 70 wt % to 100 wt %, based on the total weight of the composition; and
a mass ratio of the component A to the component B is 9:1 to 1:9.