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AssigneeClariant Produkte (Deutschland) GmbH
InventorsMatthias Krull, Carsten Cohrs, Heidi Rausch
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The present invention relates to alkylphenol-aldehyde resins containing oligo- or polymers having a repeat structural unit of the formula where R1 is a branched alkyl or alkenyl radical which has from 10 to 40 carbon atoms and bears at least one carboxyl, carboxylate and/or ester group, R2 is hydrogen or R1 R3 is hydrogen or an alkoxy group of the formula -(A-O)m—H, A is a C2- to C4-alkylene group, m is from 1 to 100, R4 is hydrogen, a C1- to C11-alkyl radicals or a carboxyl group, R5 is C1-C200-alkyl or -alkenyl, O—R6 or O—C(O)—R6, R6 is C1-C200-alkyl or -alkenyl, n is from 1 to 100 and k is 1 or 2.
An alkylphenol-aldehyde resin containing oligo- or polymers having a repeat structural unit of the formula
Dependencies are inferred from the claim text.
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Use of additives to fuels or fires for particular purposes: for improving lubricity; for reducing wear
Breaking emulsions: with separation aids
Of formaldehyde, e.g. of formaldehyde formed in situ: with phenol
Organic compounds: mixtures of organic macromolecular compounds with organic non-macromolecular compounds
About 1 year 4 months of term left · ends 21 Feb 2028 (estimated)
This Application claims benefit of foreign priority under 35 U.S.C. 119 (b) to DE 10 2005 045 134.9 the entire disclosure of which is hereby incorporated herein by reference.
The present invention relates to alkylphenol-aldehyde resins which contain structural units of fatty acids or derivatives thereof, and which have improved performance properties as additives for fuel oils.
Polycyclic aromatic hydrocarbons are constituents of all relatively high-boiling fractions in the distillation of crude oil. They are considered to be harmful to the health of living beings and to the environment. The content of polycyclic aromatic hydrocarbons in fuel oils is therefore being lowered ever further, as a result of which effects including a reduction of emissions of particles harmful to health in exhaust gases are achieved. The health objections with regard to the polycyclic aromatic hydrocarbons, also known as polyaromatics, for example naphthalene which is suspected of causing cancer, are causing a search for ways to reduce these substances in industrial products. For the same reason, for fuel oils based on renewable raw materials, there is a search for means of replacing the hydrocarbons of mineral origin which are often used as a solvent for the preparation of additives by renewable raw materials. Polyaromatic hydrocarbons are understood here to mean compounds which contain at least two fused aromatic rings.
To assess the effect of the inventive additives on the cold flow properties of middle distillates, the inventive additives (A) were used with various coadditives. The ethylene copolymers (B) and paraffin dispersants (C) have the characteristics specified below.
The superior effectiveness of the inventive additives together with ethylene copolymers and paraffin dispersants for mineral oils and mineral oil distillates is described firstly with reference to the CFPP test (cold filter plugging test to EN 116).
In addition, the paraffin dispersancy in middle distillates is determined as follows in the short sediment test: