Pour point depressant polymer for middle distillate hydrocarbons and process of preparation thereof
AssigneeHindustan Petroleum Corporation Limited
InventorsYadagiri Gopalakrishna Tullimilli, Nilesh Kottari, Siva Kesava Raju Chinthalapati, Srinivasa Narasimha Sheshachala
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Abstract
The present disclosure provides a scalable pour point depressant polymer of poly(alkyl acrylamide)m (alkyl carboxy ethyl acrylate)n copolymer to meet the various grades of specialty middle distillate hydrocarbon pour point specification. Further, the disclosure provides a process for the preparation of copolymer pour point depressant (PPD).
Claims20
A pour point depressant polymer, wherein the pour point depressant polymer is a poly(alkyl acrylamide)m (alkyl carboxy ethyl acrylate), copolymer of formula 1:
- wherein R1 is selected from the group consisting of H, C1 to C4 alkanes, and cyclic alkanes,
- wherein R2 is selected from the group consisting of C8 to C24 alkanes, and C8 to C24 cycloalkanes,
- and m is an integer indicating a number of alkyl acrylamide repeating units and n is an integer indicating a number of alkyl carboxy ethyl acrylate repeating units.
A process for preparing a pour point depressant polymer, the process comprising:
- mixing monomers of alkyl carboxy ethyl acrylate and alkyl acrylamide in an aromatic solvent to obtain a mixture solution;
- adding an initiator to the mixture solution followed by heating for polymerisation to obtain a copolymer solution;
- cooling the copolymer solution to room temperature followed by addition of a quencher to obtain a quencher added copolymer solution;
- and
- concentrating the quencher added copolymer solution to obtain the pour point depressant polymer.
Dependencies are inferred from the claim text.