US 11,898,115 B2
Nitrogen-containing terpolymer biodiesel solidification point depressant, and preparation method and application thereof
Sheng Han, Shanghai (CN); Suya Yin, Shanghai (CN); Dongyuan Jin, Shanghai (CN); Xian Zhu, Shanghai (CN); Taishun Yang, Shanghai (CN); Mingxia Yuan, Shanghai (CN); Xin Li, Shanghai (CN); Hualin Lin, Shanghai (CN); and Yuan Xue, Shanghai (CN)
Assigned to SHANGHAI INSTITUTE OF TECHNOLOGY, Shanghai (CN)
Appl. No. 17/927,724
Filed by SHANGHAI INSTITUTE OF TECHNOLOGY, Shanghai (CN)
PCT Filed May 27, 2021, PCT No. PCT/CN2021/096332
§ 371(c)(1), (2) Date Nov. 24, 2022,
PCT Pub. No. WO2021/244388, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 202010489249.9 (CN), filed on Jun. 2, 2020.
Prior Publication US 2023/0242827 A1, Aug. 3, 2023
Int. Cl. C10L 10/14 (2006.01); C10L 10/16 (2006.01); C10L 1/238 (2006.01)
CPC C10L 1/2381 (2013.01) [C10L 10/16 (2013.01); C10L 2200/0476 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A preparation method of a nitrogen-containing terpolymer biodiesel solidification point depressant, comprising the following steps:
1) respectively preparing methylacrylic acid high carbon ester and N-hexadecyl methacrylamide; and
2) adding the methylacrylic acid high carbon ester, the N-hexadecyl methacrylamide, and vinyl acetate to a first solvent, and adding an initiator for polymerization to yield a methylacrylic acid high carbon ester-N-hexadecyl methacrylamide-vinyl acetate terpolymer, i.e., a nitrogen-containing terpolymer biodiesel solidification point depressant;
wherein the step of preparing methylacrylic acid high carbon ester comprises:
adding a mixture of methylacrylic acid, a higher alcohol, and a polymerization inhibitor to a second solvent,
heating the mixture to 55-65° C. for full dissolution, and
adding a catalyst for catalysis to yield methylacrylic acid high carbon ester; and
wherein the step of preparing N-hexadecyl methacrylamide comprising:
adding hexadecylamine to a third solvent,
adding methacryloyl chloride to react with the hexadecylamine at 55-65° C. for 1.5-2.5 h, and
drying the reaction product to yield N-hexadecyl methacrylamide.