摘要:
Process for improving the brilliance of color and the stability of a colored polymer system, which is composed of a matrix and of discrete polymer particles distributed in accordance with a defined spatial lattice structure in the matrix, and which is obtained by filming of an emulsion polymer with core/shell structure, which comprises using an emulsion polymer obtainable by polymerizing monomers in at least one first stage (core monomers), then polymerizing monomers in at least one further, second stage (transition stage), and finally polymerizing monomers in a third stage (shell monomers), where, based on the percentage constitution of the monomer mixtures of the three stages, at most 30% by weight of the monomers of the first stage are identical with those of the third stage, and 5% of the monomers of the second stage are identical with, respectively, those of the first and those of the third stage, and not more than 60% by weight of the monomers of the 2nd stage here are monomers absent in the 1st stage and also absent in the 3rd stage.
摘要:
Use of cationically modified, particulate, hydrophobic polymers, the surface of which has been cationically modified by coating with polyvalent metal ions and/or cationic surfactants, the particle size of which is 10 nm to 100 μm, as additive to rinse compositions, care compositions, detergents and cleaners, and also rinse compositions, care compositions, detergents and cleaners which comprise the cationically modified, particulate, hydrophobic polymers.
摘要:
The invention relates to the use of cationically-modified, particle-shaped, hydrophobic polymers as addition agents in rinsing, care, detergent, and cleaning products. The surface of said polymers is cationically modified by means of a coating of cationic polymers and the particle size of said polymers ranges from 10 nm to 100 μm.
摘要:
In the process and a correspondingly appropriate device for preparing homo- or copolymers of at least one of the, polymerizable monomers of the group consisting of styrene, butadiene, vinyl chloride, vinyl acetate, vinylidene chloride, alkyl (meth)acrylatc (meth)acrylic acid, (meth)acrylonitrile and (meth)acrylamide reaction is carried out at at least 40° C. in the presence of a dispersing auxiliary and of a free-radical polymerization initiator such that at least 85% by weight of the polymer is formed from these monomers. In the multistage process the procedure is such that a) in a first stage water is added as a solvent which is inert in the reaction and dispersing auxiliaries, seed and a first portion of monomer(s) are added if desired, b) in a second stage initiator is added, and c) in a third stage the remainder or all of the monomer(s) is added directly or in emulsion form and in the presence of further water and, if desired, further dispersing auxiliary or other auxiliaries, it also being possible to operate any two of the stages as a single stage. The reaction mixture, which is in emulsion form, is moved in all or some stages through an external circuit which leads from and back to the reaction vessel (2) and comprises at least one low-shear pump (7) and at least one heat exchanger (8) having an essentially laminar flow profile. The products prepared by this process, which involves short preparation times, have good performance properties (for adhesive bonds, for example).
摘要:
The present invention relates to a process for preparing aqueous active compound compositions of active compounds which are poorly soluble in water, in particular of active compounds for the protection of crops and materials. Moreover, the invention relates to the active compound compositions obtainable by the process and to their use for controlling harmful organisms in plants and in the protection of materials.The process comprises the following steps: a) provision of an aqueous suspension of solid active compound particles of at least one active compound having a solubility in water of not more than 5 g/l at 25° C./1013 mbar, comprising, for stabilizing the active compound particles, at least one surfactant, where the active compound particles in the suspension have a mean particle size, determined by dynamic light scattering, of not more than 1200 nm, b) emulsion polymerization of a first monomer composition M1 in the aqueous suspension of the active compound, where the monomer composition M1 comprises at least 95% by weight, based on its total weight, of at least one neutral, monoethylenically unsaturated monomer M1.1 having a solubility in water of not more than 30 g/l at 25° C./1013 mbar, giving an aqueous dispersion of polymer/active compound particles, and c) emulsion polymerization of a second monomer composition M2 in an aqueous dispersion of the polymer/active compound particles obtained in step b), where the monomer composition M2 comprises at least 60% by weight, based on its total weight, of at least one neutral, monoethylenically unsaturated monomer M2.1 having a solubility in water of not more than 30 g/l at 25° C./1013 mbar.
摘要:
The invention relates to aqueous fungicidal active substance compositions and to their use in the control of harmful microorganisms and in particular in the protection of cellulose-comprising materials, particularly wood, from infection by microorganisms, in particular those harmful fungi which can damage wood or cellulose.The active substance composition according to the invention comprises: a) at least one fungicidal organic active substance with a solubility in water of not more than 5 g/l at 25° C./1013 mbar, and b) a finely-divided polymer with an average particle size, determined by dynamic light scattering, of not more than 300 nm, in which the polymer particles comprise the active substance, the polymer being formed from ethylenically unsaturated monomers M comprising: at least 60% by weight, based on the total amount of the monomers M, of at least one neutral monoethylenically unsaturated monomer M1 with a solubility in water of not more than 30 g/l at 25° C., and up to 40% by weight, based on the total amount of the monomers M, of one or more ethylenically unsaturated monomers M2 other than the monomers M1.
摘要:
The invention relates to aqueous fungicidal active substance compositions and to their use in the control of harmful microorganisms and in particular in the protection of cellulose-comprising materials, particularly wood, from infection by microorganisms, in particular those harmful fungi which can damage wood or cellulose.The active substance composition according to the invention comprises: a) at least one fungicidal organic active substance with a solubility in water of not more than 5 g/l at 25° C./1013 mbar, and b) a finely-divided polymer with an average particle size, determined by dynamic light scattering, of not more than 300 nm, in which the polymer particles comprise the active substance, the polymer being formed from ethylenically unsaturated monomers M comprising: at least 60% by weight, based on the total amount of the monomers M, of at least one neutral monoethylenically unsaturated monomer M1 with a solubility in water of not more than 30 g/l at 25° C., and up to 40% by weight, based on the total amount of the monomers M, of one or more ethylenically unsaturated monomers M2 other than the monomers M1.
摘要:
The present invention relates to aqueous insecticidal preparations in the form of an aqueous dispersion of finely divided polymer particles which comprise at least one insecticidal organic active ingredient with a solubility in water of not more than 5 g/l at 25° C. at 1013 mbar and which have a mean particle size, determined by dynamic light scattering, of not more than 300 nm, where the polymer particles which comprise the at least one insecticidal active ingredient of a cationic surface charge and where the aqueous dispersion of the active-ingredient-comprising polymer particles is obtainable by subjecting a monomer composition of ethylenically unsaturated monomers M, in which the ethylenically unsaturated monomers M comprise the at least one insecticidal active ingredient in dissolved form, to radical aqueous emulsion polymerization. The invention also related to the use of such aqueous insecticide compositions for protecting lignocellulosic materials, in particular timber, against attack by harmful insects.