Dow Global Technolgoies LLC

Yaokun Han

Martin R Greaves

Yong Zhao

Cheng Shen

Tao Wang

Jieying Chen

Ingrid Govaert

Paolo Sabatino

A composition of matter that exhibits two phases at lower temperatures (for example, less than about 50° C.) but only one-phase at higher temperatures (for example, above about 90° C.) is disclosed. The compositions comprise a low viscosity base oil which is a hydrocarbon oil and the high viscosity base oil which is a triblock polyalkylene glycol derived from a copolymer of 1, 2-propylene oxide and 1, 2-butylene oxide in which the PO/BO ratio is from 25/75 to 90/10 percent by weight and has a polymerization sequence of PO-BO-PO.

Triblock polyalkylene glycols for two phase lubricants

A lubricant composition that comprises a hydrocarbon base oil, a polar viscosity improver; and an esterified polyalkylene glycol: R[O(RO)(RO)(C&#x2550;O)R], wherein Ris a linear alkyl having 1 to 18 carbon atoms, a branched alkyl having 4 to 18 carbon atoms or an aryl with 6 to 30 carbon atoms; RO is an oxypropylene moiety derived from 1, 2-propylene oxide; RO is an oxybutylene moiety derived from butylene oxide, wherein RO and RO are in a block or a random distribution; Ris a linear alkyl with 1 to 18 carbon atoms, a branched alkyl with 4 to 18 carbon atoms or an aryl with 6 to 18 carbon atoms; n and m are each independently integers ranging from 0 to 20 wherein n+m is greater than 0, and p is an integer from 1 to 4. The lubricant composition may have a viscosity index of at least 150, a kinematic viscosity at 100&#xb0; C. from 2 to 5 centistokes and a kinematic viscosity at &#x2212;20&#xb0; C. of at most 600 centistokes.

Hydrocarbon lubricant compositions and method to make them

The present disclosure provides A lubricant composition comprises an antioxidant; and an esterified polyalkylene glycol: R[O(RO)(RO)(C&#x2550;O)R], wherein Ris a linear alkyl having 1 to 18 carbon atoms, a branched alkyl having 4 to 18 carbon atoms or an aryl with 6 to 30 carbon atoms; RO is an oxypropylene moiety derived from 1,2-propylene oxide; RO is an oxybutylene moiety derived from butylene oxide, wherein RO and RO are in a block or a random distribution; Ris a linear alkyl with 1 to 18 carbon atoms, a branched alkyl with 4 to 18 carbon atoms or an aryl with 6 to 18 carbon atoms; n and m are each independently integers ranging from 0 to 20 wherein n+m is greater than 0, and p is an integer from 1 to 4, wherein the antioxidant is present in an amount by weight of at least 0.5% to 20% based upon the weight of the antioxidant and the esterified polyalkylene glycol and the antioxidant is soluble in the esterified polyalkylene glycol in an amount of at least 0.5% by weight. The lubricant composition may be used as an additive to form a hydrocarbon lubricant composition.

Polyalkylene glycol lubricant compositions

The present disclosure provides for a lubricant formulation and a method of forming the lubricant formulation for use in an internal combustion engine. The lubricant formulation includes a base oil and an esterified oil-soluble polyalkylene glycol (E-OSP) of Formula (I): R[O(RO)(RO)(C&#x2550;O)R]wherein Ris a linear alkyl having 1 to 18 carbon atoms, a branched alkyl having 4 to 18 carbon atoms or an aryl with 6 to 30 carbon atoms; RO is an oxypropylene moiety derived from 1, 2-propylene oxide; RO is an oxybutylene moiety derived from butylene oxide, wherein RO and RO are in a block or a random distribution; Ris a linear alkyl with 1 to 18 carbon atoms, a branched alkyl with 4 to 18 carbon atoms or an aryl with 6 to 18 carbon atoms; n and m are each independently integers ranging from 0 to 20 wherein n+m is greater than 0, and p is an integer from 1 to 4.

Modified oil soluble polyalkylene glycols

Embodiments of the present disclosure are directed towards esterified oil soluble polyalkylene glycols of Formula (I): R[O(RO)(RO)(C&#x2550;O)R], where Ris a linear alkyl having 1 to 18 carbon atoms, a branched alkyl having 4 to 18 carbon atoms or an aryl with 6 to 30 carbon atoms; RO is an oxypropylene moiety derived from 1, 2-propylene oxide; RO is an oxybutylene moiety derived from butylene oxide, where RO and RO are in a block or a random distribution; Ris a linear alkyl with to 18 carbon atoms, a branched alkyl with 4 to 18 carbon atoms or an aryl with 6 to 18 carbon atoms; n and m are each independently integers ranging from 0 to 20 wherein n+m is greater than 0, and p is an integer from 1 to 4.

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Shanghai, China

Yaokun Han