Abstract:
The invention relates to highly functional highly- and hyper-branched polymers made from polyisobutene derivatives and a method for production thereof.
Abstract:
The invention relates to a mixture, comprising a detergent and a co-detergent, whereby the co-detergent is an ampiphilic polymer, comprising one or more hydrophobic sub-groups (A) and one or more hydrophilic sub-groups (B), characterised in that one or more hydrophobic sub-groups (A) are formed from a polyisobutene block, the polyisobutene macromolecules of which comprise at least 50 mol % terminally-arranged double bonds.
Abstract:
Polytetrahydrobenzoxazine der allgemeinen Formel I
in der Q den über ein Stickstoffatom angebundenen Rest einer Tetrahydrobenzoxazin-Einheit bezeichnet, welche in cyclischer Form gemäß der Formel
oder in durch Hydrolyse des Tetrahydrooxazin-Ringes in Gegenwart von Protonen oder Lewis-Säuren ringgeöffneter Form vorliegen kann und Bistetrahydrobenzoxazine der allgemeinen Formel II
in der A ein Brückenglied mit 1 bis 20 Kohlenstoffatomen bedeutet, sowie durch Hydrolyse eines oder beider Tetrahydrooxazin-Ringe in Gegenwart von Protonen oder Lewis-Säuren ringgeöffnete Formen der Bistetrahydrobenzoxazine der allgemeinen Formel II, und ihre Verwendung als Kraftstoff- oder Schmierstoffadditive, insbesondere als Detergensadditive für Dieselkraftstoffe.
Abstract:
The application provides a terpolymer obtainable by copolymerization of (A) 1 to 70% by weight of at least one electron-deficient olefin, for example an anhydride of a monoethylenically unsaturated C 4 - to C 6 -dicarboxylic acid, (B) 1 to 85% by weight of at least one olefin which bears only hydrogen atoms and/or carbon atoms without electron-withdrawing substituents on the olefinic double bond thereof, for example of an isobutene homo‑ or copolymer with a number-average molecular weight of 100 to 500 000, and (C) 1 to 70% by weight of at least one alkoxyvinylsilane, and conversion products of this terpolymer obtainable by modification or crosslinking.
Abstract:
The invention relates to the use of tetrahydrobenzoxazines (I), where R1 = a hydrocarbon group and R2, R3, R4 and R5 independently = H, OH or hydrocarbon and R2 to R5 can also form a second and a third tetrahydrooxazine ring with the proviso that at least one of the substituents has 4 to 3,000 carbon atoms and the remaining substituents, when hydrocarbon groups have 1 to 20 carbon atoms, as stabilisers for the stabilisation of inanimate organic materials, in particular turbine fuels against the effects of light, acid and heat.
Abstract:
The invention relates to a dielectric layer with a permittivity of 3.5 or less comprising a dielectric obtainable by polymerizing at least one twin monomer comprising a) a first monomer unit which comprises a metal or semimetal, and b) a second monomer unit which is connected to the first monomer unit via a chemical bond, wherein the polymerization involves polymerizing the twin monomer with breakage of the chemical bond and formation of a first polymer comprising the first monomer unit and of a second polymer comprising the second monomer unit, and wherein the first and the second monomer unit polymerize via a common mechanism.
Abstract:
The invention relates to a method for producing polyisobutenylphenols by alkylation of an aromatic hydroxy compound with substantially singly ethylenically unsaturated polyisobutylenes substantially homopolymers in the presence of a Lewis Acid alkylation catalyst. The method is characterised in that the polyisobutylene contains at least 35 mol- % of a double bond in position β.
Abstract:
Alkenylsuccinic anhydrides obtainable by reacting maleic anhydride with mixtures of oligomers having at least 12 carbon atoms, which are obtainable by oligomerizing a hydrocarbon mixture which contains at least two olefins having from 4 to 8 carbon atoms over a catalyst which comprises a transition metal, processes for preparing the alkenylsuccinic anhydrides and to their use as sizing agents in the production of paper, paperboard and cardboard.