Abstract:
Polymeric mist control materials, methods of forming polymeric mist control materials, and methods of using such materials for mist control are provided. The polymeric mist control additives are formed of molecules comprised predominantly of monomers that confer high solubility in fuel and include associative groups that attract each other in donor-acceptor manner, and are incorporated such that multiple associative groups are in close proximity (“clusters”), such that the clusters are separated by very long non-associative sequences.
Abstract:
The invention relates to specific copolymers obtainable by co-polymerizing at least the following monomers: •at least one bicyclic (meth)acrylate ester •at least one lower-alkyl (meth)acrylate •optionally, and preferably, at least one aromatic vinyl monomer; and •optionally other ethylenically unsaturated monomers, whereby the copolymer has a weight averaged molecular weight of from 100,000 to 10,000,000 D, determined using GPC-MALS techniques for a solution in THF at 40° C., as well as to the way to synthesize such copolymers and the use of such polymers to modify the rheology of a liquid in which they are soluble.
Abstract:
An additive composition comprises a polymer (A) and a condensation product (B). Polymer (A) comprises the following monomer components: (i) one or more compounds of formula (I) wherein R1 is hydrogen or CH3; and R2 is a hydrocarbon group having 6 to 30 carbon atoms and is a straight-chain or branched-chain alkyl group, or an aliphatic or aromatic cyclic group; (ii) one or more compounds of formula (II) wherein R1 has the meaning above and wherein R3 is hydrogen or C1-C22 alkyl; each R4 is independently hydrogen or C1-C22 alkyl; R5 is hydrogen, a substituted or unsubstituted aliphatic or aromatic cyclic group, or a substituted or unsubstituted straight-chain or branched-chain alkyl group having 1 to 22 carbon atoms; n=0 or an integer from 1 to 22; and m is an integer from 1 to 30; and (iii) one or more compounds of formula (III) wherein R6, R7, R8, R9 and R10 are each independently hydrogen, a straight-chain or branched-chain alkyl group having 1 to 20 carbon atoms which may be substituted or unsubstituted, hydroxyl, NH2, or wherein two or more of R6, R7, R8, R9 and R10 may together form an aliphatic or aromatic ring system, which ring system may be substituted or unsubstituted. Condensation product (B) comprises the product formed by the reaction of an aliphatic aldehyde or ketone, or a reactive equivalent, with a substituted phenol or mixture of substituted phenols. The weight:weight ratio of the polymer (A) to the condensation product (B) is from 1:20 to 20:1
Abstract:
A copolymer with high chemical homogeneity, consisting of (A) 50 to 30% by weight of ethylene, (B) 50 to 70% by weight of C4- to C24-hydrocarbyl ester of (meth)acrylic acid, (C) 0 to 5% by weight of (meth)acrylic acid and (D) 0 to 10% by weight of copolymerizable monomers, obtainable by polymerizing a mixture of 80 to 60% by weight of ethylene, 20 to 40% by weight of (meth)acrylic acid and 0 to 10% by weight of copolymerizable monomers in a backmixing, continuous polymerization apparatus, and subsequently polymer-analogously esterifying the resulting copolymer with C4- to C24-hydrocarbinols. The inventive copolymer is suitable for improving the cold flow properties of fuel oils, for lowering the lower mixing temperature of cold flow improver additives into fuel oils, and for improving the filterability of fuel oils comprising cold flow improver additives.
Abstract:
The present invention relates to cooling additives for middle distillates, containing A) at least one polyester of formula (A1) wherein one of the radicals R1 to R4 represents a linear C16-C40 alkyl or alkenyl radical and the remainder of the radicals R1 to R4 represent, independently of one another, hydrogen or an alkyl radical having 1 to 3 C atoms, R5 is a C—C bond or an alkylene radical having 1 to 6 C atoms, R16 is a hydrocarbon group having 2 to 10 carbon atoms, n is an integer from 1 to 100, m is an integer from 3 to 250, p is 0 or 1, and q is 0 or 1, B) at least one copolymer of ethylene and of at least one ethylenically unsaturated ester, the copolymer having a melt viscosity, measured at 140 DEG C., of at most 5000 mPas, and C) at least one organic solvent.
Abstract:
The present invention relates to a process for preparing grafted polyalkyl(meth)acrylates (PAMAs) containing dispersant repeating units in the polymer backbone as well as in the grafted layer, which polymers are characterized by a low sulfur content, the products available by this process and their use as an additive to fuels, especially to middle distillates and blends thereof. The present invention further relates to a composition comprising the grafted polyalkyl(meth)acrylates prepared by the process according to the present invention and the use of said composition as an additive component to fuels, especially to middle distillates and blends thereof, and for improving the cold flow properties of fuel oil and fuel oil compositions, especially to middle distillate fuels and blends thereof.
Abstract:
The present invention provides a compound as a cold flow improver for a fuel composition, said compound being an ester of (i) a polyol wherein the polyol is selected from at least pentaerythritol, polymers thereof and mixtures thereof; and (ii) a fatty acid oligomer, wherein the fatty acid oligomer has a degree of polymerisation from 2 to 7. The ester compound can be used for reducing, preventing or inhibiting cold filter plugging in a diesel engine.
Abstract:
The present disclosure relates to additive compositions and their use for improving the low temperature properties of motor fuels and fuels. The additive compositions include at least one modified alkylphenol-aldehyde resin and at least one filterability additive chosen from: the terpolymers of C4 to C22 alkyl (meth)acrylate, C20 to C24 alpha-olefin and maleimide N-substituted by a hydrocarbon chain having between 4 and 30 carbon atoms, the homopolymers of C1 to C40 alkyl (meth)acrylate, preferably the C8 to C24 alkyl polyacrylates, the ammonium salts of mono- or poly-carboxylic acid comprising at least one linear or branched, saturated or unsaturated hydrocarbon chain, having between 4 and 30 carbon atoms. The present disclosure also relates to compositions of motor fuels or liquid hydrocarbon fuels including such compositions.
Abstract:
The present invention relates to the use of polyalkyl(meth)acrylates as an additive to fuels, especially middle distillate fuels and blends thereof. The present invention further relates to the use of a composition comprising polyalkyl(meth)acrylates as dispersing species susceptible to disperse waxes and sludgy material at low temperatures and a hydrocarbon solvent/an oil for improving the cold flow properties of fuel oil and fuel oil compositions. The present invention further relates to the use of these compositions as an additive to fuels, especially in the function of paraffin dispersant, to such fuels themselves and to fuel additive concentrates which comprise this composition dissolved in a hydrocarbon solvent or an oil.