23-12-2021 дата публикации
Номер: US20210395898A1
In accordance with one or more embodiments of the present disclosure, a process for preventing corrosion of a metallic surface of a pipeline includes contacting the metallic surface with a corrosion inhibitor. The corrosion inhibitor comprises a polymer of formula R—O—(POL)—Z. R is a straight or branched alkyl or aryl; POL is a polyglycerol based polymer; Z is a non-ionic amine, a cyclic amine having 5 to 8 atoms, a diamine, a triamine, a tetra-amine, a polymeric amine, a thiol, a disulfide, or —NH—R—SH; and Ris a hydrocarbyl. The corrosion inhibitor is also disclosed. 1. A process for preventing corrosion of a metallic surface of a pipeline , the method comprising: [ {'br': None, 'R—O—(POL)—Z\u2003\u2003(1)'}, 'the corrosion inhibitor comprises a polymer of formula (1), R is a straight or branched alkyl or aryl;', 'POL is a polyglycerol based polymer;', {'sub': '1', 'Z is a non-ionic amine, a cyclic amine having 5 to 8 atoms, a diamine, a triamine, a tetra-amine, a polymeric amine, a thiol, a disulfide, or —NH—R—SH; and'}, {'sub': '1', 'Ris a hydrocarbyl.'}], 'where'}], 'contacting the metallic surface with a corrosion inhibitor, wherein'}2. The process of claim 1 , wherein R is a straight or branched (C-C) alkyl or aryl.3. The process of claim 1 , wherein POL is selected from a dendritic polyglycerol homopolymer claim 1 , a branched polyglycerol homopolymer claim 1 , a hyperbranched polyglycerol homopolymer claim 1 , a dendritic copolymer comprising polyglycerol claim 1 , a branched copolymer comprising polyglycerol claim 1 , a hyperbranched copolymer comprising polyglycerol claim 1 , a dendritic terpolymer comprising polyglycerol claim 1 , a branched terpolymer comprising polyglycerol claim 1 , a hyperbranched terpolymer comprising polyglycerol claim 1 , a derivative of a hyperbranched polyglycerol claim 1 , and a combination of two or more thereof.4. The process of claim 1 , wherein Ris a (C-C) hydrocarbyl.5. The process of claim 1 , wherein Z is a diamine ...
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