Title of Invention | PREPARATION OF MONOMERS FOR GRAFTING TO POLYOLEFINS AND LUBRICATING OIL COMPOSITIONS CONTAINING GRAFTED COPOLYMER |
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Abstract | A graft copolymer containing one or more ethologically-unsaturated aliphatic or aromatic, nitrogen-and oxygen-containing graftable monomers grafted to a polyolefin is disclosed. Novel monomers, method of making such monomers, and graft copolymers comprising such monomers are based on reacting an acylating agent with an amine to from a reaction product. The reaction product may include more than one chemical compounds formed from the combination of the acylating agent and the amine. The monomer is the graftable, ethologically unsaturated, aliphatic or aromatic, nitrogen-and oxygen-containing compound(s) of the reaction product. The monomer may, but need not, be recovered from the product mixture. The preferred monomer is the reaction product of malefic anhydride and 4-aminodiphenylamine. Also described is a method of making a dispersant viscosity index improved. The monomer of the present invention may be grafted to a polyolefin in solutions or melts. Also described is a lubricating oil comprising a base oil and a grafted polyolefin as described above. |
Full Text |
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Patent Number | 245498 | |||||||||||||||
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Indian Patent Application Number | 738/MUMNP/2004 | |||||||||||||||
PG Journal Number | 04/2011 | |||||||||||||||
Publication Date | 28-Jan-2011 | |||||||||||||||
Grant Date | 21-Jan-2011 | |||||||||||||||
Date of Filing | 21-Dec-2004 | |||||||||||||||
Name of Patentee | CASTROL LIMITED | |||||||||||||||
Applicant Address | WAKEFIELD HOUSE, PIPERS WAY, SWINDON, WILTSHIRE SN3 1RE | |||||||||||||||
Inventors:
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PCT International Classification Number | C08G | |||||||||||||||
PCT International Application Number | PCT/US03/16542 | |||||||||||||||
PCT International Filing date | 2003-05-23 | |||||||||||||||
PCT Conventions:
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