摘要:
Functional fluid systems, i.e., hydraulic fluid and heat transfer fluid systems, containing alkoxysilanol cluster compounds having the formula RSi[OSi(OR').sub.3 ].sub.2 OH wherein R is hydrogen, an alkyl, alkenyl, aryl or aralkyl group and each R' is independently selected from the same group as R with the proviso that at least a majority of R' radicals are sterically hindered alkyl groups having at least 3 carbon atoms, are described.
摘要:
The invention provides a silicone-based working fluid composition having improved heat resistance which comprises (A) 100 parts by weight of a base component composed of a first dimethylpolysiloxane terminated at both molecular chain ends each with a trimethylsiloxy group and a second dimethylpolysiloxane terminated at both molecular chain ends each with a silicon-bonded hydroxy group in such a proportion that the trimethylsiloxy/hydroxy molar ratio is from 95/5 to 10/90 and (B) from 0.01 to 5 parts by weight of an additive component which is a diorganopolysiloxane having imino-containing phenoxy groups, e.g. 4-anilinophenoxy group, 4-(4-anilino)anilinophenoxy group, 4-(.alpha.-naphthylamino)phenoxy group and 4-(.beta.-naphthylamino)phenoxy group, as the pendant groups on the polysiloxane.
摘要:
The present invention provides a silicone hydraulic fluid which is particularly useful as an automotive brake fluid which is comprised of a polysiloxane base fluid having specified amounts of mono-, di-, and tri- functionality; which is combined with a hydrocarbonoxy functional silicone additive which provides advantageous low temperature characteristics. Other optional brake fluid additives can also be utilized.
摘要:
Novel glycol-substituted alkyl silanes useful as components of hydraulic fluids have the general formula: ##STR1## wherein R, R.sup.1, R.sup.4 and R.sup.5 are specified substituents. Hydraulic fluids containing the glycol-substituted alkyl silanes are also described.
摘要:
SILICONE FLUIDS CONTAINING A SMALL AMOUNT OF ALKALI METAL SALT OF TRIFLUOROACETIC ACID HAVE REDUCED TENDENCY TO FORM GELATINOUS SOLIDS AS THEY DECOMPOSE AT HIGH TEMPERATURE. THE FUNCTION OF SAID METAL SALT IS IMPROVED BY THE ADDITION OF A SMALL AMOUNT OF SODIUM HYDROXIDE.
摘要:
THE INVENTION DESCRIBED HEREIN IS A LUBRICATING COMPOSITION CONTAINING ANTIMONY TRIOXIDE IN A LIQUID CARRIER AND IS ESPECIALLY SUITABLE FOR THE LUBRICATION OF TITANIUMSTEEL AND MONEL-STEEL INTERFACES. ADDITIONALLY, IT HAS BEEN FOUND THAT THE ADDITION OF ANTIMONY TRIOXIDE TO FLUOROSILICONE FLUIDS TENDS TO STABILIZE SUCH FLUIDS AGAINST OXIDATION.