Title of Invention

PREPARATION OF MONOMERS FOR GRAFTING TO POLYOLEFINS AND LUBRICATING OIL COMPOSITIONS CONTAINING GRAFTED COPOLYMER

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.
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Documents:


Patent Number 245498
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:
# Inventor's Name Inventor's Address
1 MCKENNA STEPHEN T 964 ELDERBERRY CIRCLE, NO. 112, NAPERVILLE, IL 60563
2 GOLDBLATT IRWIN L 8 CELLER ROAD, EDISON, NJ 08817
3 PATEL MANISH R. 2701 GORNIAK DRIVE, PARLIN, NJ 08859
4 CHEN SHEAN-JER 9 CEDAR STREET, BRIDGEWATER, NJ 08807
PCT International Classification Number C08G
PCT International Application Number PCT/US03/16542
PCT International Filing date 2003-05-23
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 60/383,845 2002-05-20 U.S.A.
2 60/383,204 2002-05-24 U.S.A.