Patent ID: 6576732
Filing Date: 2003-06-10
Classification: C08J,C08L,F17D,Y10S

Abstract:
An ultra-high molecular weight copolymer useful as a drag reducer for hydrocarbons comprising:a) a vinyl aromatic monomer, wherein the vinyl aromatic monomer comprises one or more monomers selected from the group consisting of styrene, an alkyl-styrene with an alkyl group having between 1 and 10 carbon atoms, a vinylnaphthalene, and a vinyl alkylnaphthalene with an alkyl group having between 1 and 10 carbon atoms and; b) a first &agr;-olefin monomer having a carbon chain length of between 2 and 20 carbon atoms; wherein the ultra-high molecular weight copolymer has a molecular weight of greater than 5 million.