Abstract:
The invention relates to a method for producing aqueous polymer dispersions containing colorants by radical aqueous emulsion polymerisation of ethylenically unsaturated monomers in the presence of radical-forming initiators. At least a proportion of the monomers is used in the form of an oil-in-water emulsion E1 whose disperse phase contains at least one oil-soluble colorant. The inventive method is characterised in that the disperse phase of E1 is essentially made up of colorant-containing monomer droplets with a diameter
Abstract:
The invention relates to a method for producing aqueous polymer dispersions containing colorants by radical aqueous emulsion polymerisation of ethylenically unsaturated monomers in the presence of radical-forming initiators. At least a proportion of the monomers is used in the form of an oil-in-water emulsion E1 whose disperse phase contains at least one. oil-soluble colorant. The inventive method is characterised in that the disperse phase of E1 is essentially made up of colorant-containing monomer droplets with a diameter
Abstract:
Procedimiento para la obtención de dispersiones de polímeros acuosas que contienen colorante, mediante polimerización en emulsión acuosa a través de radicales con monómeros con insaturación etilénica en presencia de iniciadores que forman radicales, empleándose al menos una parte de monómeros en forma de una emulsión de agua en aceite E1, cuya fase dispersa contiene al menos un colorante soluble en aceite, caracterizada porque la fase dispersa de E1 se forma esencialmente por gotitas de monómero que contienen colorante con un diámetro
Abstract:
The present invention relates to combinatorial processes for preparing an array of n aqueous polymer dispersions by emulsion polymerization and for preparing an array of m formulations of polymer dispersions, and also to the arrays themselves. The processes are conducted at n or m spatially separate locations for the n or m mixtures, respectively. To conduct the emulsion polymerization, monomers, initiator, dispersants and, if desired, further components are reacted with one another in water as the reaction medium. To prepare the formulations, aqueous polymer dispersions are mixed with other aqueous polymer dispersions and/or further components. With all processes, each of the n or m mixtures differs from every other mixture in at least one parameter in each case which may have an influence on the properties of the resultant polymer dispersions or formulations, respectively. The advantage of the invention is that by means of these processes it is possible rapidly to prepare and characterize a large number of aqueous polymer dispersions and formulations. This leads to an acceleration in the development process for the preparation of aqueous polymer dispersions and formulations having optimized properties.
Abstract:
The graft copolymer made froma1: from 10 to 90% by weight of a particulate graft base A1, made from a particulate emulsion polymer with a glass transition temperature below 0° C. made froma11: from 70 to 100% by weight of butadiene or of at least one C1-8-alkyl acrylate, or of mixtures of these, as component A11,a12: from 0 to 20% by weight of at least one polyfunctional crosslinking monomer, as component A12,a13: from 0 to 30% by weight of other copolymerizable monomers, as component A13, the total amount of these being 100% by weight,a2: from 10 to 90% by weight of a graft A2 made from the following monomers, the amounts being based on A2,a21: from 60 to 100% by weight of at least one vinylaromatic monomer, or of a (meth)acrylic ester or of mixtures of these, as component A21, anda22: from 0 to 40% by weight of at least one ethylenically unsaturated monomer, as component A22,has a median particle diameter of from 130 to 500 nm and has polymodal particle size distribution in which less than 40% by weight of the particles are present in any particle size range of width 50 nm.
Abstract:
The invention relates to a method for producing aqueous polymer dispersions containing colorants by radical aqueous emulsion polymerisation of ethylenically unsaturated monomers in the presence of radical-forming initiators. At least a proportion of the monomers is used in the form of an oil-in-water emulsion E1 whose disperse phase contains at least one oilsoluble colorant. The inventive method is characterised in that the disperse phase of E1 is essentially made up of colorant-containing monomer droplets with a diameter
Abstract:
The present invention relates to a process for preparing dye-comprising aqueous polymer dispersions by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers in the presence of free-radical initiators, in which at least some of the monomers are employed in the form of an oil-in-water emulsion E1 whose disperse phase comprises at least one oil-soluble dye, wherein the disperse phase of E1 is formed essentially of dye-comprising monomer droplets having a diameter
Abstract:
The invention relates to combinatory methods for producing an array of n aqueous polymer dispersions by emulsion polymerization and for producing an array of m formulations of polymer dispersions, in addition to the arrays themselves. The methods are carried out at n or m spatially separated locations for the n or m formulations. To carry out the emulsion polymerization, monomers, an initiator, a dispersant and optionally addition al components are reacted with one another in water, which acts as the reaction medium. To produce the formulations, aqueous polymer dispersions are mixed with other aqueous polymer dispersions and/or additional components. In all methods, each one of the n or m formulations differs from the other formulation in at least one respective parameter, which can influence the characteristics of the polymer dispersions or formulations that are obtained . The advantage of the invention is that said method allows a large number of aqueous polymer dispersions and formulations to be produced and characterize d. This accelerates the development of aqueous polymer dispersions and formulations with optimized characteristics.
Abstract:
The invention relates to combinatory methods for producing an array of n aqueous polymer dispersions by emulsion polymerization and for producing an array of m formulations of polymer dispersions, in addition to the arrays themselves. The methods are carried out at n or m spatially separated locations for the n or m formulations. To carry out the emulsion polymerization, monomers, an initiator, a dispersant and optionally additional components are reacted with one another in water, which acts as the reaction medium. To produce the formulations, aqueous polymer dispersions are mixed with other aqueous polymer dispersions and/or additional components. In all methods, each one of the n or m formulations differs from the other formulation in at least one respective parameter, which can influence the characteristics of the polymer dispersions or formulations that are obtained. The advantage of the invention is that said method allows a large number of aqueous polymer dispersions and formulations to be produced and characterized. This accelerates the development of aqueous polymer dispersions and formulations with optimized characteristics.
Abstract:
The invention relates to a method for the continuous production of a polymer dispersion by means of an aqueous radical emulsion polymerization of at least one ethylenically unsaturated monomer in a reactor. According to the invention, an emulsion of the monomer or of the monomers in an aqueous phase is fed into the reactor, and the average droplet size of the monomer drops which are emulsified in an aqueous phase ranges from 1 to 20 mu m according to the polymerization conditions. The method results in a polymer dispersion having a low coagulate content.