Abstract:
Described is paper or cardboard packaging produced from mineral oil contaminated, recycled paper, wherein the packaging includes a barrier layer obtainable by applying an aqueous polymeric dispersion comprising a copolymer obtainable by emulsion polymerization of C1-C4 alkyl (meth)acrylates, acid monomers, e.g., acrylic acid or methacrylic acid, 0-20 wt % of acrylonitrile and 0 to 10 wt % of further monomers, wherein the glass transition temperature of the copolymer is in the range from +10 to +45° C. The barrier layer may be situated on one of the surfaces of the packaging or form one of multiple layers of a multilayered packaging coating or be situated as a coating on one side of an inner bag situated within the packaging.
Abstract:
An adhesive film which comprises at least two continuous polymer phases A and B each formed from a polymer or polymer mixture A (polymer A for short) and a polymer or polymer mixture B (polymer B for short) and which is obtainable by filming at least one of the polymers, A or B, initially in the form of an aqueous polymer dispersion.
Abstract:
A coated polymer foil is described and can be produced via coating of a polymer foil with an aqueous composition comprising (A) a polymer which is obtained via free-radical polymerization and which is composed of from 10 to 80% by weight of a compound selected from ethylenically unsaturated anhydrides and ethylenically unsaturated dicarboxylic acids, the carboxylic acid groups of which can form an anhydride group, and (B) an alkanolamine having at least two hydroxy groups. The coating gives the polymer foil an oxygen barrier and can in particular be used for producing packaging.
Abstract:
A process for the preparation of a readily water-redispersible polymer powder by spray drying of an aqueous polymer dispersion in the presence of a novel spray drying assistant.
Abstract:
A readily water-redispersible and water-wettable polymer powder is prepared by spray-drying of an aqueous dispersion of polymer particles with admixing of a hydrophilic and of a hydrophobic antiblocking agent.
Abstract:
Described is paper or cardboard packaging produced from mineral oil contaminated, recycled paper, wherein the packaging includes a barrier layer obtainable by applying an aqueous polymeric dispersion comprising a copolymer obtainable by emulsion polymerization of C1-C4 alkyl(meth)acrylates, acid monomers, e.g., acrylic acid or methacrylic acid, 0-20 wt % of acrylonitrile and 0 to 10 wt % of further monomers, wherein the glass transition temperature of the copolymer is in the range from +10 to +45° C. The barrier layer may be situated on one of the surfaces of the packaging or form one of multiple layers of a multilayered packaging coating or be situated as a coating on one side of an inner bag situated within the packaging.
Abstract:
The invention relates to a method of finishing an organic pigment that involves dissolving or dispersing the pigment in an aqueous solvent or a mineral acid and crystallizing the pigment from the solution or dispersion in the presence of a crystallization modifier, and subsequently isolating the pigment as a solid, wherein the crystallization modifier is a condensation product containing sulfonate groups and formed from at least one hydroxyarylsulfonic acid and/or at least one hydroxydiaryl sulfone compound and at least one aliphatic aldehyde having 1-6 C atoms, optionally urea, and an alkali metal sulfite if appropriate, or is a mixture of such condensation products.
Abstract:
A multilayer laminate composed of at least a) a backing, b) a pressure-sensitive adhesive layer, and c) a sealable layer, the pressure-sensitive adhesive layer being located between the backing and the sealable layer, and wherein the pressure-sensitive adhesive comprises a polymeric binder having a glass transition temperature of −60 to −0° C. and a gel content of less than 50% by weight (and referred to below for short as adhesive polymer).
Abstract:
A pressure-sensitive adhesive comprising an aqueous polymer dispersion prepared by emulsion polymerization, wherein the polymer comprises n-butyl(meth)acrylate and hydroxybutyl(meth)acrylate.
Abstract:
A coated polymer foil is described and can be produced via coating of a polymer foil with an aqueous composition comprising (A) a polymer which is obtained via free-radical polymerization and which is composed of from 10 to 80% by weight of a compound selected from ethylenically unsaturated anhydrides and ethylenically unsaturated dicarboxylic acids, the carboxylic acid groups of which can form an anhydride group, and (B) an alkanolamine having at least two hydroxy groups. The coating gives the polymer foil an oxygen barrier and can in particular be used for producing packaging.