Abstract:
Mannich condensation products prepared by the condensation of a compound of formula (III), wherein R is hydrogen or lower alkyl having 1 to 6 carbon atoms; R1 is hydrogen, hydroxy, lower alkyl or lower alkoxy; R3 and R4 are independently hydrogen or lower alkyl; R5 is hydrogen, alkyl, phenyl, aralkyl, alkaryl, or an acyl group of formula (a), wherein R6 is alkyl, phenyl, aralkyl or alkaryl; and n is an integer from 5 to 100; with an aldehyde and a nitrogen base selected from ammonia, lower alkylamine, a polyamine and mixtures thereof. The Mannich condensation products and their fuel-soluble salts are useful as fuel additives for the prevention and control of engine deposits.
Abstract:
The present invention relates to synthetic hydrocarbons produced by skeletal isomerization, and the isomerization process. The products are especially useful as the continuous phase of a drilling fluid, for example when prepared from C14 to C18 linear alpha-olefins via isomerization or hydroisomerization, and as lube oils. The present invention also relates to a process for producing synthetic hydrocarbons by skeletally isomerizing C12+ olefins over a catalyst comprising an intermediate pore size molecular sieve, with or without Group VIII metals under skeletal isomerization conditions which result in little, preferably in subtantially no, olefin cracking or oligomerization.
Abstract:
Methods for cracking hydrocarbons in reactor systems having improved resistances to carburization and coking. The reactor system comprises a steel portion having provided thereon a Group VIB metal protective layer to isolate the steel portion from hydrocarbons, applied to a thickness effective for isolating the steel portion from the hydrocarbon environment. The protective layer is anchored to the steel substrate through an intermediate carbide-rich, bonding layer.
Abstract:
Mannich condensation products prepared by the condensation of a compound of formula (a) wherein R1 is hydrogen, hydroxy, lower alkyl or lower alkoxy; R3 and R4 are independently hydrogen or lower alkyl; R5 is hydrogen, alkyl, phenyl, aralkyl, alkaryl, or an acyl group of formula (b) or (c), wherein R6 is alkyl, phenyl, aralkyl or alkaryl, R7; is hydrogen, hydroxy, lower alkyl or lower alkoxy; n is an integer from 5 to 100; and x and y are each independently an integer from 0 to 10; with an aldehyde and a nitrogen base selected from ammonia, lower alkylamine, a polyamine and mixtures thereof. The condensation products and their fuel soluble salts are useful as fuel additives for the prevention and control of engine deposits.
Abstract:
A fuel additive having formula (I) wherein A1 is a thioether, a sulfoxide, a sulfone, a sulfonic acid, a sulfonamide, a nitrile, a carboxylic acid or ester, or a carboxamide; R1 and R2 are independently hydrogen, hydroxy, lower alkyl or lower alkoxy; R3 and R4 are independently hydrogen or lower alkyl; n is an integer from 0 to 100; and when n is 0 to 10, R5 is polyalkyl having an average molecular weight of 450 to 5,000; and when n is 5 to 100, R5 is hydrogen, alkyl, phenyl, aralkyl, alkaryl or an acyl group having formula: (a) or (II) wherein R6 is alkyl, phenyl, aralkyl or alkaryl; R7 and R8 are independently hydrogen, hydroxy, lower alkyl or lower alkoxy; A2 is a thioether, a sulfoxide, a sulfone, a sulfonic acid, a sulfonamide, a nitrile, a carboxylic acid or ester, or a carboxamide; and x and y are independently integers from 0 to 10; with the proviso that when n and x are both 0, then A1 may not be a carboxylic acid or ester, or a carboxamide.
Abstract:
Disclosed is a method for alkylating alkyl salicylate using a solid acidic alkylation catalyst and approximately equimolar amounts of alkyl salicylate and alkylating feedstock.
Abstract:
Polyalkyl nitro and amino aromatic esters having formula (I): wherein A1 is nitro, amino, N-alkylamino wherein the alkyl group contains 1 to 6 carbon atoms, or N,N-dialkylamino wherein each alkyl group independently contains 1 to 6 carbon atoms; R1 and R2 are independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; R3 is a polyalkyl group having a weight average molecular weight in the range of about 450 to 5,000; and x is an integer from 0 to 10. The polyalkyl nitro and amino aromatic esters of formula (I) are useful as fuel additives for the prevention and control of engine deposits.
Abstract translation:具有式(I)的聚烷基硝基和氨基芳族酯:其中A1是硝基,氨基,其中烷基含有1至6个碳原子的N-烷基氨基或N,N-二烷基氨基,其中每个烷基独立地包含1至6个碳原子 ; R 1和R 2独立地是氢,羟基,具有1至6个碳原子的低级烷基或具有1至6个碳原子的低级烷氧基; R3是重均分子量在约450至5,000范围内的聚烷基; 并且x是0至10的整数。式(I)的多烷基硝基和氨基芳族酯可用作预防和控制发动机沉积物的燃料添加剂。
Abstract:
A full boiling hydrocarbon feed is reformed to enhance para-xylene and benzene yields. First, the hydrocarbon feed is separated into a C5- cut, a C6-C7 cut, and a C8+ cut. The C6-C7 cut has less than 5 lv. % of C8+ hydrocarbon, and the C8+ cut has less than 10 lv. % of C7- hydrocarbon. The C6-C7 cut is subjected to catalytic aromatization at elevated temperatures in a first reformer in the presence of hydrogen and using a non-acidic catalyst comprising at least one Group VIII metal and a non-acidic zeolite support to produce a first reformate stream; and the C8+ cut is subjected to catalytic aromatization at elevated temperatures in a second reformer in the presence of hydrogen and using an acidic catalyst comprising at least one Group VIII metal and a metallic oxide support to produce a second reformate stream. Less than 20 wt.% of the total amount of C8 aromatics produced in the first and second reformer is ethylbenzene, and more than 20 wt.% of the total amount of xylenes produced in the first and second reformer are para-xylenes.
Abstract:
An oxygen scavenging composition or system is provided comprising at least one polyterpene and at least one catalyst effective in catalyzing an oxygen scavenging reaction. A film, a multi-phase composition, a multi-layer composition, an article comprising the oxygen scavenging composition, a method for preparing the oxygen scavenging composition, and a method for scavenging oxygen are also provided.
Abstract:
A hydrocarbon conversion process wherein austenitic stainless steel portions that are subject to halide stress-corrosion cracking conditions, such as the colder portions of the process equipment including effluent coolers, knockout drums, accumulation drums, and piping low points, are provided with a protective layer having improved halide stress-corrosion cracking resistance. The method comprises applying a metal cladding, plating, paint or other coating to a stressed portion of austenitic stainless steel hydrocarbon conversion process equipment, optionally curing the coated steel to form intermetallic compounds to protect the steel portions; converting hydrocarbons utilizing a halided catalyst or under conditions where a halogen-containing compound is added or evolved or both; and subjecting the protected steel portion to halide stress-corrosion cracking conditions. A preferred coating material comprises tin, and preferably one or more intermetallic layers are provided to at least a portion of an austenitic stainless steel substrate to improve its stress-corrosion cracking resistance.