Patent ID: 6066603
Filing Date: 2000-05-23
Classification: C08F,C10L,C10M,C10N

Abstract:
Hydrocarbon copolymer derived from at least one polymerizable polar monomer and at least one polymerizable olefinic monomer, said polar monomer selected from .alpha., .beta. unsaturated carbonyl compounds represented by the formula: ##STR9## wherein X is hydrogen (H), NH.sub.2, R.sub.y or OR.sub.y ; R.sub.x is H or a C.sub.1 -C.sub.5 straight or branched alkyl group and R.sub.y is H or a C.sub.1 to C.sub.20 straight or branched alkyl group; said copolymer suitable for use as a fuel or lubricant additive, said copolymer having the following characteristics:(a) an average ethylene sequence length, ESL, of from about 1.0 to less than about 3.0;(b) an average of at least 5 branches per 100 carbon atoms of tilde copolymer chains comprising said copolymer;(c) at least about 50% of said branches being methyl and/or ethyl branches;(d) substantially all of said incorporated polar monomer is present at the terminal position of said branches;(e) at least about 30% of said copolymer chains terminated with a vinyl or vinylene group;(f) a number average molecular weight, Mn, of from about 300 to about 10,000; and(g) substantial solubility in hydrocarbon and/or synthetic base oil.