Abstract:
The tendency of an oil to foam is inhibited by adding to the oil a homopolymer derived from a silane monomer of formula wherein R is a C1-C18 monovalent hydrocarbon group comprising an alkyl, cycloalkyl, aryl, aralkyl or alkaryl group, R1 is a C1-C18 alkyl or alkyloxyalkyl group, R11 is a vinyl, allyl or cyclohexenyl group, x is 0, 1 or 2, y is 1, 2 or 3 and the sum of x and y is 3. Polymerization takes place through the R11 groups to produce a carbon-to-carbon chain, so that the polymers are not polysiloxanes. The oil may be a mineral or synthetic lubricating oil or a ligher petroleum fraction such as gasoline or kerosene. Synthetic lubricating oils mentioned are polymerized unsaturated hydrocarbons (e.g. polybutenes, polypropenes and mixtures of these), polyalkylene glycols and esters thereof, and the aliphatic diesters of dicarboxylic acids (e.g. butyl, hexyl, 2-ethylhexyl, decyl and lauryl esters of sebacic, adipic or azelaic acid). The homopolymers may be derived from vinylalkoxy-, allylalkoxy- or cyclohexenylalkoxy-silanes or mixtures of these. In particular, homopolymers derived from vinyltriethoxy-, vinyltributoxy-, vinylbutyldiethoxy-, vinyldibutylethoxy-, vinylhexyldibutoxy-, vinyldiphenylethoxy-, vinylphenyldiethoxy-silane may be employed. The homopolymers may be employed in lubricating oils in conjunction with other additives, such as extreme pressure agents, viscosity index improvers, oiliness agents and detergents. Specified detergents are phosphosulphurized hydrocarbons (e.g. phosphosulphurized polybutylene) neutralized with sodium or potassium hydroxide, alkaline earth petroleum sulphonates, alkaline earth phenyl stearates and alkaline earth alkyl phenol sulphides. In the examples, toluene or kerosene solutions of polyvinyltriethoxysilanes are added to a lubricating composition consisting of mineral oil and lecithin. For comparison purposes, the effect of adding toluene or kerosene solutions of dimethylsilicones to the same lubricating composition is described.ALSO:Homopolymers derived from a silane monomer of formula wherein R is a C1-C18 monovalent hydrocarbon group comprising an alkyl, cycloalkyl, aryl, aralkyl or alkaryl group, R1 is a C1-C18 alkyl or alkoxyalkyl group, R11 is a vinyl, allyl or cyclohexenyl group, x is 0, 1 or 2, y is 1, 2 or 3 and the sum of x and y is 3, are employed in oils as anti-foam agents (see Group III). Polymerization takes place through the R11 groups to produce a carbon-to-carbon chain, so that the polymers are not polysiloxanes. The monomers may be polymerized at elevated temperature and in the presence of di-t-butyl peroxide as catalyst, employing an inert, substantially anhydrous atmosphere, for example of nitrogen, argon or carbon dioxide. In examples, vinyltriethoxysilane, vinylethyldiethoxysilane, vinylphenyldiethoxysilane or vinyldiphenylethoxysilane are polymerized.
Abstract:
Disclosed are organomodified polysiloxanes, compositions, in particular fuel compositions, that include these organomodified polysiloxanes, and the use of the organomodified polysiloxanes for the defoaming of fuels.
Abstract:
A diesel fuel composition comprising a first additive (i) comprising a quaternary ammonium salt and a second additive (ii) comprising a Mannich reaction product; wherein the quaternary ammonium salt additive (i) is formed by the reaction of a compound of formula (A): R O O R1 10 (A) and a compound formed by the reaction of a hydrocarbyl-substituted acylating agent and an amine of formula (B1) or (B2): 15 N X R3 R2 NHR4 N X R3 R2 [O(CH2)m]nOH (B1) (B2) wherein R is an optionally substituted alkyl, alkenyl, aryl or alkylaryl group; R1 is a C1 to C22 alkyl, aryl or alkylaryl group; wherein R2 and R3 are the same or different alkyl, alkenyl or aryl groups having from 1 to 22 carbon atoms; X is a bond or alkylene group having from 1 to 20 20 carbon atoms; n is from 0 to 20; m is from 1 to 5; and R4 is hydrogen or a C1 to C22 alkyl group; and wherein the Mannich reaction product additive (ii) is the product of a Mannich reaction between: (d) an aldehyde; (e) an amine; and25 (f) a substituted phenol; wherein the phenol is substituted with at least one branched hydrocarbyl group having a molecular weight of between 200 and 3000.
Abstract:
A formulation and methods for making high energy organic fuels that incorporate suspended metal particles with metal particle sized ranging from 33 nm to 5 micron. The hybrid organic fuels contain superior density and/or energy content to conventional liquid organic fuels. These hybrid organic fuels used in combination with metal particle afford fuels with 5 to 80% more net heat of combustion (based on volume). These fuels should extend the distant range for jets, liquid rocket engines, SCRAM jet engines, and improve energy content in fuel-air explosive applications such as fuel-air explosives and in the Multi-Effects Weapons System (MEWS) where the fuel is used both for propulsion and explosive effects.
Abstract:
There are disclosed energetic nanoparticle compositions and materials containing silicon and other energetic elements, and methods of manufacturing the same, including reacting silicon nanoparticles and unsaturated alkene or alkyne to form covalently bonded surface coatings passivated against surface oxidation, for combination with a fuel, explosive or oxidizer.
Abstract:
A diesel fuel composition comprising a quaternary ammonium salt additive which additive is formed by the reaction of (1) a quaternising agent and (2) a compound formed by the reaction of a hydrocarbyl-substituted acylating agent and at least 1.4 molar equivalents of an amine of formula (B1) or (B2), wherein R2 and R3 are the same or different alkyl, alkenyl or aryl groups having from 1 to 22 carbon atoms; X is a bond or alkylene group having from 1 to 20 carbon atoms; n is from 0 to 20; m is from 1 to 5; and R4 is hydrogen or a C1 to C22 alkyl group.
Abstract:
Systems and methods for producing engineered fuels from municipal solid waste material are described herein. In some embodiments, a method includes combining a first waste stream that includes at least one of hard plastic, soft plastic and mixed plastic with a sorbent and increasing the temperature of the combined first waste stream and sorbent to a temperature of at least about 200° C. The method further includes combining the thermally treated first waste stream and sorbent with a second waste stream that includes fiber, and compressing the combined first waste stream, sorbent, and second waste stream to form a densified engineered fuel feedstock.