Abstract:
This invention relates to benzylic ether phenolic resole resins and the process for preparing them. The benzylic ether phenolic resole resins are prepared by heating phenol and an aldehyde in a sealed reaction vessel in the presence of a divalent metal catalyst without removing water generated by the reaction until an appropriate endpoint for the resin is reached. The benzylic ether phenolic resole resins produced by the process are preferably free or essentially free of unreacted formaldehyde and can be used in the resin component of phenolic-urethane foundry binders to make foundry cores and/or molds by the cold-box and no-bake processes. The cores and/or molds are used for making metal castings.
Abstract:
A non-aqueous negative photoresist stripping composition which consists essentially of about 40 to 85 % by weight of an alkylnaphthalene solvent, about 5 to 20 % by weight of an alkyl phenol which provides a corrosion inhibitory effect, about 5 to 20 % by weight of a linear monoalkylbenzene sulfonic acid which is a surfactant and about 1 to 10 % by weight of a dialkylbenzene sulfonic acid. There is further provided a process for removing coatings from a photoresist with the compositions of the invention.
Abstract:
Disclosed is a method for improving fluid cracking catalyst performance by increasing metal contamination incrementally while cracking two different feedstocks that have different concentrations of metal contaminants. The relative amount of metal contamination is controlled by magnetic separation. The incrementally increased cracking catalyst is used in cracking a second feedstock.
Abstract:
It has been discovered that when a zirconium compound, preferably an acetate or other oil-soluble organic Zr compound, is utilized in an FCC riser, it must be injected into a low temperature stream, e.g., a feed stream, or preferably injected directly into the riser, e.g., through a quill, so that any thermal decomposition occurs in the riser in proximity to the FCC conversion catalyst. Water solutions prematurely decompose, depositing Zr on piping of the cracking process unit.
Abstract:
This invention relates to a composition and process for controlling scale on metal surfaces exposed to aqueous systems. The composition used in the process is a synergistic mixture of (1) a first component capable of inhibiting the formation of CaSO4 scale; and (2) a second component selected from the group consisting of benzoic acid, benzene sulfonic acid, water soluble derivatives thereof, and salts thereof.
Abstract:
Novel compositions comprising asphalt, having improved durability, are disclosed, the compositions comprising or containing (a) from about 0.1 % to about 5.0 % of a Group II metal hydrocarbyldithiophosphate, or mixture thereof, and (b) from about 0.1 % to about 5.0 % of an antioxidant butylated phenol, or mixture thereof, the ratio of (a) to (b) being from about 0.75:1 to about 4.0:1. A process of making such improved compositions is also described, as well as methods of utilizing such compositions.
Abstract:
A lubricant additive formulation for addition to conventional motor oil to improve the lubricating properties of the engine oil and enhance the performance of the engine. The engine treatment oil additive comprises a synergistic blend of an oil soluble molybdenum additive, polyalphaolefin, ester such as a polyolester or diester, polytetrafluoroethylene, dispersant inhibitor containing zinc dithiophosphate, mineral oil base stock, viscosity index improvers, and borate ester used in combination with a conventional crankcase lubricant at about a 20 to about a 25 % volume/percent. The improved performance of the engine additive in comparison with conventional crankcase lubricants is attributable to the effect of optimizing the design parameters for each of the invdividual chemical constituents and combining the chemical constituents according to the present invention to obtain surprisingly good results including improved: wear, oxidation resistance, viscosity stability, engine cleanliness, fuel economy, cold starting, and inhibition of acid formation.
Abstract:
This invention relates to foundry mixes and their uses. The foundry mixes comprise (a) a foundry aggregate, and (b) a foundry binder comprising in admixture: (1) an acetoacetate ester; (2) an alpha , beta ethylenically unsaturated monomer; and (3) a liquid tertiary amine catalyst haivng a pK value of 12-14. The foundry mixes are used to prepare foundry shapes made from foundry mixes by a no-bake process.
Abstract:
This invention is an integrated system for making containers and filling them with ultra high purity chemicals all within a cleanroom environment so that the chemicals avoid contamination and meet semiconductor manufacturing purity standards.