Abstract:
PROBLEM TO BE SOLVED: To provide a stable emulsion comprising a polyolefin, in particular, polyisobutene and water, and to provide a method to obtain the emulsion and also to provide the use of the emulsion.SOLUTION: An emulsion comprises, with respect to the total mass of the emulsion: (a) a polyolefin in an amount of 2 to 75 mass%; (b) a polymer Px in an amount of 0.05 to 40 mass%; (c) oil Ox in an amount of 0 to 25 mass%; (d) a surfactant Sx in an amount of 0 to 25 mass%; (e) an additive Ax in an amount of 0 to 20 mass%; and (f) water in an amount of 10 to 97.95 mass%. The emulsion can consist of components (a), (b) and (f).
Abstract:
Disclosed is the production of isobutylene homopolymer or copolymer derivatives comprising a hydrophobic polyisobutylene polymer residue that has a number average molecular weight of 110 to 250,000 and low-molecular polar groups containing amino functions, nitro groups, hydroxyl groups, mercaptan groups, carboxylic acid or carboxylic acid derivative functions, sulfonic acid or sulfonic acid derivative functions, aldehyde functions and/or silyl groups. According to the invention, isobutylene or a monomer mixture containing isobutylene is polymerized in the presence of an iron halide donor complex acting as a polymerization catalyst, an aluminum trihalide donor complex or an aluminum alkyl halide donor complex containing an organic compound having an ether function or a carboxylic acid ester function as a donor, or a Lewis acid complex containing organic sulfonic acids and optional donors, the resulting highly reactive isobutylene polymer is reacted with a compound introducing the low-molecular polar group or a substructure thereof, and in case the reaction is performed using a substructure, the formation of the low-molecular polar group is completed by performing successive reactions.
Abstract:
Disclosed is the production of isobutylene copolymer derivatives by radically copolymerizing (a) 10 to 90 mol-% of a monoethylenically unsaturated C4 to C12 dicarboxylic acid or the anhydride, half-ester or full ester thereof, (b) 10 to 90 mol-% of a highly reactive isobutylene polymer having a number average molecular weight of 110 to 250,000, and (c) 0 to 50 mol-% of monoethylenically unsaturated compounds that can be copolymerized with monomer components (a) and (b), and then reacting the carboxylic acid or carboxylic acid derivative functions in the obtained isobutylene copolymer with ammonia, an amine and/or an alcohol so as to form groupings having hydroxy, carboxylic acid ester, amino, quaternized amino, amido and/or imido groups. In order to produce monomer component (b), isobutylene or a monomer mixture containing isobutylene is polymerized in the presence of an iron halide donor complex acting as a polymerization catalyst, an aluminum trihalide donor complex or an aluminum alkyl halide donor complex containing an organic compound having an ether function or a carboxylic acid ester function as a donor, or a Lewis acid complex containing at least one organic sulfonic acid and optional donors.
Abstract:
The present invention relates to a process for preparing high- reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per homo- or copolymer chain end of at least 70 mol% which comprises polymerizing isobutene or an isobutene- comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or of an alkylaluminum halide-donor complex, said complex comprising, as the donor, a mixture of at least two organic compounds with at least one ether function each.
Abstract:
Moldable-foam moldings whose density is in the range from 10 to 100 g/l, obtainable via the fusion of prefoamed foam beads composed of expandable, pelletized thermoplastic polymer materials, comprising from 5 to 100% by weight of a styrene copolymer A), from 0 to 95% by weight of polystyrene B), and from 0 to 95% by weight of a thermoplastic polymer C) other than A) and B), and a process for producing the expandable pelletized thermoplastic polymer materials.
Abstract:
The present invention relates to a novel process for preparing high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol%. The present invention further relates to novel isobutene polymers.
Abstract:
The invention relates to corrosion inhibitors for fuels and lubricants. The invention also relates to uses of corrosion inhibitors in fuels and lubricants.
Abstract:
The present invention relates to a process for preparing high- reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 70 mol%, which comprises polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or an alkylaluminum halide-donor complex effective as a polymerization catalyst, wherein the aluminum trihalide or alkylaluminum halide is treated with at least one inorganic hydrate.