Abstract:
Fluids for hydraulic breaks are described which have a content in boron of from 0% to 1% by weight and essentially consist of: (a) an alkylenglycol; (b) alkylenglycol monoalkylether; (c) a polyalkylenglycol monoalkylether of the general formula: RO &lparstr& CHR min CH2O &rparstr& nH wherein: R = C1-C4 alkyl; R min = H, CH3; n = an integer which confers onto the compound a molecular weight comprised between 208 and 1000; and possibly (d) the reaction product of (a) with a boron compound. They display excellent characteristics, in particular high boiling points under wet conditions, and low viscosities at low temperatures.
Abstract:
A kit and process are provided for working metals, said kit comprising a metal nitride and/or metal carbonitride coated metal working tool and a water soluble metal working fluid, said fluid comprising a relatively large alkoxylated amine, an alkanolamine and an acid-derived compound selected from organic acids, inorganic acids, and salts thereof, and said process comprising contacting a metal workpiece with said metal working tool in the presence of said fluid to effectuate working of said metal.
Abstract:
Fluid concentrates for aqueous functional fluids useful in hydraulic systems or as metalworking compositions contain (a) a cloud point raising metal dialkyldithio-phosphate additive having the following structural formula: wherein R 1 , R 2 , R 3 , and R 4 are individually linear or branched alkyl, alkenyl, aryl, arylalkyl and alkylaryl groups having from 1 to 24 carbon atoms; and M is Zn, Sb, Sn, Mg or Mn; preferably Zn or Sb; (b) a polyether nonionic surfactant; and (c) an associative polyether thickener.
Abstract:
Fluids for hydraulic breaks are described which have a content in boron of from 0% to 1% by weight and essentially consist of:
(a) an alkylenglycol; (b) alkylenglycol monoalkylether; (c) a polyalkylenglycol monoalkylether of the general formula: wherein:
n = an integer which confers onto the compound a molecular weight comprised between 208 and 1000; and possibly (d) the reaction product of (a) with a boron compound.
They display excellent characteristics, in particular high boiling points under wet conditions, and low viscosities at low temperatures.
Abstract translation:描述了用于液压断裂的流体,其硼含量为0重量%至1重量%,并且基本上由以下组成:(a)亚烷基二醇; (b)亚烷基二醇单烷基醚; (c)具有以下通式的聚亚烷基二醇单烷基醚:RO& Lparstr&CHR min CH 2 O&rparstr&nH其中:R = C 1 -C 4烷基; R min = H,CH 3; n =赋予化合物的分子量在208和1000之间的整数; 并且可能(d)(a)与硼化合物的反应产物。 它们显示出优异的特性,特别是在潮湿条件下的高沸点,以及低温下的低粘度。
Abstract:
The apparatus comprises a first pair of photosensors (50E, 80W) arranged at symmetrically opposed positions on a first horizontal axis (16) rotatable around a third vertical axis (14), and a second pair of photosensors (50N, 50S) arranged at symmetrically opposed positions on a second axis (18) perpendicular to and rotatable around the first axis. To the first and third axes are connected driving means which operate when there are differences in outputs between the first pair of photosensors and between the second pair of photosensors, respectively.
Abstract:
In accordance with the instant invention, a water-based hydraulic fluid, having- improved viscosity can be obtained by blending a carboxylic acid with a thickened hydraulic fluid compositiop employing a thickener obtained by modifying a conventional polyether polyol thickening agent with an alpha-olefin epoxide or glycidyl ether having about 10 to 22 carbon atoms or mixtures thereof. Small amounts of higher molecular weight glycols may also be incorporated into the chain.