摘要:
A railway diesel crankcase lubricant composition comprising a major portion of a diesel lubricating oil and a minor amount of, as an oxidation and corrosion inhibiting agent, a condensate product prepared by the process comprising:(a) reacting a dibasic acid anhydride, separately, with:(i) a oligomeric isobutylene, and(ii) 2,5-dimercapto-1,3,4,-thiadiazole, to produce, respectively, oligomeric(isobutylene-g-succinic anhydride) and 2-thio-(5-mercapto-1,3,4-thiadiazole) succinic anhydride;(b) reacting both of the succinic anhydrides with pentamethylenediamine to produce the [2-thio-(5-mercapto-1,3,4-thiadiazole)]-[oligomeric(isobutylene-g-succinic)]-pentamethylenetetraamine-bis succinimide product; and(c) recovering the bis-succinimide product.
摘要:
Asphaltenes isolated from bituminous products that have been bulk phosphochlorinated using phosphorous trichloride and amidated using aminoacids or aminoacid salts show enhanced dissolution properties when added to bituminous liquids or bituminous liquids blended with gasoline.
摘要:
A composition of matter comprising ureas, biurets or allophanates structurally represented, respectively, by ##STR1## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon; ##STR2## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon; or ##STR3## where R is hydrogen or a (C.sub.1 -C.sub.50) linear or branched aliphatic, alkenyl, alkynyl or aryl hydrocarbon.
摘要:
A rust and corrosion inhibiting marine diesel engine lubricating oil additive is provided which comprises a mixture of:(a) an oligomeric polythiocyclic imide represented by the formula ##STR1## wherein R and R.sup.1 each are a (C.sub.1 -C.sub.50) saturated or unsaturated aliphatic group and n is an integer of 0 to 5; an oligomeric amine represented byR"--NH.sub.2where R" is dodecyl or a (C.sub.12 -C.sub.25) alkyl group; and either(b) a polymeric additive of a poly [ethylene-co-propylene)-g-succinic anhydride] represented by the formula ##STR2## wherein ethylene (E) and propylene (P) are randomly incorporated; a and b correspond to 60 mole % and 40 mole %, respectively; and the repeat unit, c, is an integer of 40 to 40,000 so that the overall molecular weight of said succinic anhydride is 50,000 to 70,000 AMU's and an(c) amino thiocyclic represented by the formula ##STR3##
摘要:
A method has been developed to solubilize hydroxy S-triazines containing at least one hydroxy function in diesel fuel and to enhance their overall thermal stability. The products which result from the full or partial encapsulation of hydroxy-S-triazine with calix[8]arene have unique and novel properties and reduce or eliminate nitrogen oxides level in diesel fuel.
摘要:
A method of compatibilization asphaltenes containing bituminous liquids which process comprises:a) reacting an asphaltene with phosphorous trichloride to form a phosphochlorinated asphaltene containing from about 0.01 wt % to about 20 wt % phosphorous;b) reacting the phosphochlorinated asphaltene with an equimolar amount of aliphatic or aromatic amines and polyamines selected from the group consisting of:(i) a piperzine;(ii) an aliphatic amine;(iii) an alkyl piperdize;(iv) an aligomeric mixed polyether aliphatic terminal diamine;(v) an oligomeric polyether aliphatic terminal amine;(vi) an oligermic polyether aliphatic terminal triamine;(vii) a substituted aromatic polyether terminal amine; and(viii) an oligomeric or polymeric amine to produce a capatibilized asphaltene; and(c) recovering the asphaltene product.
摘要:
A polymeric lubricant additive that behaves as a viscosity index improver and imparts enhanced anti-oxidancy, dispersancy, and anti-wear properties to said lubricant oil has been prepared. The polymeric substrate is a random co- or terpolymer of ethylene propylene and a third monomer; or a block terpolymer of styrene--ethylenebutylene--styrene where hydrogenation has removed aliphatic unsaturation.Ethylenically unsaturated carboxylic acid or acid anhydride is grafted to these aforementioned substrates and imidized with amino-thiadiazole of the formula: ##STR1## wherein R.sub.1 is H.sub.2 or a (C.sub.1 -C.sub.10) alkyl radical selected from the group consisting of a alkyl, alkenyl, alkoxyl, aralkyl, alkaryl, hydroxyalkyl and aminoalkyl, to produce said polymeric lubricant additive.
摘要:
An additive composition containing pendant perfluoroaliphatic urethanes within a copolymer prepared from ethylene and propylene or an ethylene-propylene terpolymer containing non-conjugated diene or triene comprising from about 15 to 80 mole percent of ethylene, 85 to 15 mole percent propylene and from about 20 to 85 mole percent of the (C.sub.3 -C.sub.10) alphamonoolefin and having a number average molecular weight ranging from about 5,000 to 500,000 which has been reacted with at least one isocyanoacrylate agent to form one or more acrylating reaction intermediates characterized by having a pendant isocyano function within their structure and reacting said reaction intermediate with a perfluoroaliphatic alcohol and a lubricating oil composition containing same are provided.
摘要:
Dispersant viscosity index improvers for lubricating oils contain an EPR or EPT polymer onto which has been graft polymerized with isocyanatoethyl methacrylate and thereafter reacted with N-phenyl-p-phenylene diamine.