TRIBLOCK POLYALKYLENE GLYCOLS FOR TWO PHASE LUBRICANTS
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United States of America
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Jan 16, 2025
app pub date -
Feb 23, 2022
filing date -
Feb 23, 2022
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Abstract
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.
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