Patent ID: 6872694

Claim:
A method of controlling rheology of oil, comprising adding to an oil a polyether having monomeric units having the formula (I): wherein R 1 is selected from the group consisting of ethyl, isopropyl, n-butyl, t-butyl, octyl, 2-ethylhexyl, and mixtures thereof, which may have at least one substituent, or a group of —(AO) m —R 2 , wherein R 2 is a hydrocarbon group having 1 to 28 carbon atoms, which may have at least one substituent, A is an alkylene group having 2 or 3 carbon atoms, m is a number of 1 to 100, and A in the number of m is the same as or different from one another, wherein said oil has an improved elastic modulus and maintains flowability.