Abstract:
A process for preparing aqueous solutions of homo- or copolymers of acrylic acid by means of free-radical polymerization of acrylic acid and optionally water-soluble, monoethylenically unsaturated comonomers in an aqueous medium in the presence of at least one water-soluble initiator and of at least one water-soluble regulator, wherein the polymerization is conducted by means of a continuous process, and wherein, after the polymerization, low molecular weight components are at least partly removed from the resulting aqueous polymer solution. For the polymerization, preference is given to using microstructured mixers and reactors. Preference is given to using at least one reactor and/or mixer with microstructures for the process.
Abstract:
A copolymer obtainable by free-radical copolymerization of (i) monomer units of the structure M1 in which the variables are each hydrogen, alkyl groups, carboxyl groups or carboxyl derivative moieties, and (ii) monomer units of the structure M2 in which R5 is the radical of a carboxylic ester of the formula -A-CO—O—R10 where A is an alkylene group and R10 is a hydrocarbyl radical, and in which R6, R7 and R8 are each hydrogen or alkyl radicals, and subsequent polymer-analogous reaction of the product formed with a long-chain hydrocarbyl alcohol. This copolymer is suitable for improving the cold flow properties of middle distillate fuels, especially those which consist of or comprise biofuel oils.
Abstract:
Process for the production of leather, wherein pelts, pickled pelts or semifinished products are treated with at least one copolymer (A) which is obtainable by copolymerization of the following comonomers: (a) at least one ethylenically unsaturated C3-C10-carboxylic acid or at least one ethylenically unsaturated C4-C10-dicarboxylic acid or its anhydride, (b) at least one (meth)acrylate of an α-branched C3-C10-alkanol, (c) at least one (meth)acrylate of a primary C4-C20-alkanol.
Abstract:
Process for the preparation of aqueous formulations, wherein (A) at least one ethylenically unsaturated carboxylic acid, (B) at least one heterocyclic comonomer having at least one permanent cationic charge per molecule and (C-P1) at least one ethylenically unsaturated dicarboxylic acid or its anhydride are subjected to free radical copolymerization with one another in an aqueous medium and, shortly before the end or after the end of the copolymerization, further ethylenically unsaturated dicarboxylic acid (C-P2) or its anhydride is added.
Abstract:
Process for the preparation of aqueous formulations, aqueous formulations and their useA process for the preparation of aqueous formulations, wherein (A) at least one ethylenically unsaturated mono- or dicarboxylic acid or the anhydride thereof, (B) at least one comonomer having at least one permanent cationic charge per molecule and (C-P1) at least one ethylenically unsaturated carboxamide, are subjected to free radical copolymerization with one another in an aqueous medium.
Abstract:
Process for the preparation of aqueous formulations, wherein (A) at least one ethylenically unsaturated carboxylic acid, (B) at least one heterocyclic comonomer having at least one permanent cationic charge per molecule and (C-P1) at least one ethylenically unsaturated dicarboxylic acid or its anhydride are subjected to free radical copolymerization with one another in an aqueous medium and, shortly before the end or after the end of the copolymerization, further ethylenically unsaturated dicarboxylic acid (C-P2) or its anhydride is added.
Abstract:
The present invention relates to microcapsule dispersions comprising microcapsules comprising a hydrophilic capsule core and a capsule wall polymer which is obtainable by polymerization of a monomer composition comprising 25 to 95% by weight of one or more C1-C24-alkyl and/or glycidyl esters of acrylic acid and/or methacrylic acid 5 to 75% by weight of one or more hydrophilic monomers selected from acrylic acid esters and/or methacrylic acid esters which carry hydroxy and/or carboxy groups, and allylgluconamide 0 to 40% by weight of one or more compounds having two or more ethylenically unsaturated radicals, where the microcapsules are dispersed in a hydrophobic diluents, to the microcapsules, and to a method for producing them and to their use for the delayed release of active ingredients for construction, cosmetics or crop protection applications.
Abstract:
Process for preparing polymers by controlled free-radical polymerization, wherein the polymerization of one or more free-radically polymerizable monomers of the general formula (I) where R1, R2, R3 are each H, C1-C4-alkyl, R4 is C(═O)0R5, C(═O)NHR15, C(═O)NR5R6, OC(═O)CH3, C(═O)OH, CN, aryl, hetaryl, C(═O)OR5OH, C(═O)OR5Si(OR5)3, halogen, NHC(O)H, P(═O)(OR7)2, R5 is C1-C20-alkyl, R15 is C1-C20-alkyl, R6 is C1-C20-alkyl, R7 is H, C1-C20-alkyl, in the presence of a. one or more catalysts comprising Cu in the form of Cu(0), Cu(I), Cu(II) or mixtures thereof, b. one or more initiators selected from the group consisting of organic halides or pseudohalides, c. one or more ligands, d. optionally one or more solvents, e. optionally one or more inorganic halide salts, and comprises the steps i) addition of the catalyst a., ii) optionally addition of monomers of the general formula (I), iii) optionally addition of solvent d., iv) addition of ligand c., v) addition of initiator b., vi) addition of monomers of the general formula (I), vii) optionally addition of inorganic halide salts e., with the proviso that the addition of at least part of the monomers of the general formula (I) is carried out immediately before or shortly after the last of the steps i), iv) and v).
Abstract:
The present invention describes two-component coating compositions which for curing require no polyisocyanates or melamine-formaldehyde resins as crosslinkers.
Abstract:
The present application relates to care polymers and fabric and home care compositions comprising such care polymers, as well as processes for making and using such care polymers and such compositions. The performance of the care polymers that Applicants teach, can be further increased by following the emulsification teaching of the present specification and/or combining such care polymers with silicone materials.