Abstract:
This invention relates to water-insensitive hydraulic fluid compositions which contain at least one bis-borate or bridgedborate ester as the base component in said fluid composition. Such water-insensitive hydraulic fluids are high-boiling compositions particularly useful as brake fluids.
WHERE R1 and R2 are hydrogen or methyl; R3 and R4 are each an independently selected alkyl group having from 1 to 20 carbon atoms; R5 is the organic residue exclusive of reactive hydroxyl groups of a polyol, p is an integer of from 2 to 6 inclusive and n and m are positive integers independently selected in each chain and whose sum in each chain is from 2 to 20 are prepared by successively reacting boric acid with a glycol monoether and a polyol. These esters are useful as stabilizers and corrosion inhibitors for lubricants and non-aqueous hydraulic fluids.
Abstract:
This invention relates to a low water-sensitive hydraulic fluid composition which contains from about 20 to about 96% by weight of at least one borate ester as the base fluid and additionally, from about 2 to about 40% of a bis(glycol ether) formal. Such low water-sensitive hydraulic fluids are high boiling compositions which also have desirable properties at low temperatures, particularly viscosity, and thus are useful under a wide variety of climatic and operational conditions.
Abstract:
1,214,171. Borate esters. OLIN CORP. 5 July, 1968 [14 July, 1967; 1 April, 1968], No. 32261/68. Heading C2C. [Also in Division C5] A borate ester of the formula was prepared in Example IX by reacting one mole of orthoboric acid with one mole each of triethylene glycol monomethyl ether, diethylene glycol monoethyl ether and diethylene glycol monomethyl ether, in succession, in toluene solution, water being removed after each reaction. In Example X a tris-borate ester is prepared by reacting a 50 : 50 random addition product of ethylene oxide and propylene oxide with orthoboric acid, in toluene solution, in molar ratio 3 : 1, the product having a b.p. 625-630 F.
Abstract:
This invention relates to a low water-sensitive hydraulic fluid composition which contains from about 20 to about 96 percent by weight of at least one borate ester as the base fluid and additionally, from about 2 to about 40 percent of a bis (glycol ether) formal. Such low water-sensitive hydraulic fluids are high boiling compositions which also have desirable properties at low temperatures, particularly viscosity, and thus are useful under a wide variety of climatic and operational conditions.
Abstract:
This invention relates to a low water-sensitive hydraulic fluid composition which contains from about 20 to about 96 percent by weight of at least one borate ester as the base fluid and additionally, from about 2 to about 40 percent of a bis (glycol ether) formal. Such low water-sensitive hydraulic fluids are high boiling compositions which also have desirable properties at low temperatures, particularly viscosity, and thus are useful under a wide variety of climatic and operational conditions.
Abstract:
This invention relates to a low water-sensitive hydraulic fluid composition which contains from about 20 to about 96 percent by weight of at least one borate ester as the base fluid and additionally, from about 2 to about 40 percent of a bis (glycol ether) formal. Such low water-sensitive hydraulic fluids are high boiling compositions which also have desirable properties at low temperatures, particularly viscosity, and thus are useful under a wide variety of climatic and operational conditions.
Abstract:
This invention relates to a low water-sensitive hydraulic fluid composition which contains from about 20 to about 96 percent by weight of at least one borate ester as the base fluid and additionally, from about 2 to about 40 percent of a bis (glycol ether) formal. Such low water-sensitive hydraulic fluids are high boiling compositions which also have desirable properties at low temperatures, particularly viscosity, and thus are useful under a wide variety of climatic and operational conditions.