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AssigneeDow Global Technologies LLC
InventorMartin R. Greaves
Estimating the term…
A composition comprising water, a glycol, and a polyalkylene glycol which has a biodegradability of at least 60% as determined using OECD 301F wherein the composition has a kinematic viscosity of at least 25 mm2/sec at 40° C. is useful as a rheology modifier, particularly in subsea applications. In some instances, the composition comprises 10 to 65 weight % water, 20 to 60 weight % of a glycol selected from ethylene glycol, diethylene glycol, triethylene glycol and tetra ethylene glycol, 10 to 40 weight % of a polyalkylene glycol, and 0 to 10% of additives based on total weight of the composition wherein the polyalkylene glycol has a—molecular weight of no more than 4000 g/mol and is characterized in that it is an oxyethylene/oxypropylene block copolymer having a weight percent of oxyethylene of at least 20% based on total weight of the copolymer.
A composition comprising 10 to 65 weight % water, 20 to 60 weight % of a glycol selected from ethylene glycol, diethylene glycol, triethylene glycol, tetratethylene glycol and combinations thereof, 5 to 25 weight % of a polyalkylene glycol, and 0 to 10% of additives based on total weight of the composition wherein the polyalkylene glycol has a biodegradability of at least 60% as determined using OECD 301F and a—molecular weight as determined by ASTMD4274 of no more than 4000 g/mol and is characterized in that it is an oxyethylene/oxypropylene block copolymer having a weight percent of oxyethylene of at least 25% based on total weight of the copolymer wherein the composition has a kinematic viscosity of at least 25 mm2/second at 40° C. wherein the composition is a hydraulic fluid.
A composition comprising 10 to 65 weight % water, 20 to 60 weight % of a glycol, and 5 to 25% of a polyalkylene glycol based on total weight of the composition wherein the polyalkylene glycol has a biodegradability of at least 60% as determined using OECD 301F and wherein the composition is homogeneous at room temperature and has a kinematic viscosity of at least 25 mm2/sec at 40° C.
Dependencies are inferred from the claim text.