Long life

C and 19,600 kPa (2800 psi). The catalyst is a complex aluminum—ca dmium —chromium oxide that has high activity and exceptionally long life. The process is claimed to give a conversion of ester to alcohol of about 99% retaining essentially all of the original double bonds. [Pg.449]

Oils in Greases. Essentially the same type of oil is used in compounding a grease as would normally be selected for oil lubrication. Petroleum oils are used in about 99% of the grease produced and commonly are in the SAE 20—30 viscosity range with about 100 130 mm /s viscosity at 40°C. Such oils provide low volatiHty for long life at elevated temperatures (50) together with low torque down to subzero temperatures. [Pg.247]

The emergence of a new amino appHcation is rare at this point in its relatively long life, but one such has appeared and is growing rapidly. Because of... [Pg.326]

Anionic polymerization offers fast polymerization rates on account of the long life-time of polystyryl carbanions. Early studies have focused on this attribute, most of which were conducted at short reactor residence times (< 1 h), at relatively low temperatures (10—50°C), and in low chain-transfer solvents (typically benzene) to ensure that premature termination did not take place. Also, relatively low degrees of polymerization (DP) were typically studied. Continuous commercial free-radical solution polymerization processes to make PS, on the other hand, operate at relatively high temperatures (>100° C), at long residence times (>1.5 h), utilize a chain-transfer solvent (ethylbenzene), and produce polymer in the range of 1000—1500 DP. [Pg.517]

Siatered polycrystaUine diamoad tools are much more expeasive than conventional cemented-carbide or ceramic tools because of the high cost of the processiag technique and the finishing methods used. Diamond tools, however, are economical on an overaH-cost-per-part basis for certain appHcations because of long life and iacreased productivity. [Pg.216]

Iron—Air Cells. The iron—air system is a potentially low cost, high energy system being considered mainly for mobile appHcations. The iron electrode, similar to that employed in the nickel—iron cell, exhibits long life and therefore this system could be more cost effective than the ziac-air cell. Reactions iaclude ... [Pg.565]

These batteries account for - 50% of 1990 U.S. annual consumption of cadmium and are used ia heavy-duty, long-life appHcations such as rechargeable tools, apphances, iastmments, and electronics (36). [Pg.395]

The principles pertaining to carbon blast furnace hearths apply as well to submerged-arc furnace hearths. In some processes, such as in d-c arc furnaces, the electrical conductance of carbon is a most important factor. The long life of carbon linings in these appHcations is attributable to carbon s exceptional resistance to corrosive slags and metals at very high temperatures. [Pg.523]

Ejectors are easy to operate and require little maintenance. Installation costs are low. Since they have no moving parts, they have long life, sustained efficiency, and low maintenance cost. Ejectors are suitable for haudhug practically any type of gas or vapor. They are also suitable for haudliug wet or di y mixtures or gases containing sticky or solid matter such as chaff or dust. [Pg.935]

For filter-medium filtration, attributes 3, 4, 5, 8, and 9 of the preceding list apply and must have added to them (o) ability to retain the solids required, (b) freedom from discharge of lint or other adulterant into the filtrate, and (c) ability to plug slowly (i.e., long life). [Pg.1706]

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