Hoechst Aktiengesellschaft

Clariant Corporation

Hans-Ullrich Huth

Karl J Rauterkus

Karl-Hans Angelmayer

Helmut Rinno

Wolfgang Lindner

Matthias Kroggel

Helmut Braun

Werner Stelzel

Klaus Zimmerschied

Franz Konig

Ernst Noelken

Bernahard Momper

Heinz Jörg Rath

Erhard Bister

The invention relates to a partially cross-linked polyvinyl alcohol, obtained by reacting a polyvinyl alcohol with a polycarboxylic acid, in particular a hydroxypolycarboxylic acid. The partially cross-linked polyvinyl alcohol can be used to produce foils, which have a good water-solubility or water-swelling capacity. Due to this property, such foils can be used as packing material for detergents, cosmetics and the like. According to the invention, the packing dissolves in water, releases its contents or is suitable for releasing (permeation) chemical compounds or agents.

Partially cross-linked polyvinyl alcohol

Preparation of aqueous plastics dispersions which contain vinyl ester polymers or vinyl ester copolymers and have reduced contents of undesirable preparation-related residual monomeric vinyl esters and, where appropriate, acetaldehyde, from corresponding starting dispersions such as are obtainable by customary polymerization or copolymerization methods from ethylenically unsaturated monomers, by selective alkaline hydrolysis of the residual monomeric vinyl esters which can be hydrolyzed under alkaline conditions and if appropriate oxidation of the acetaldehyde to acetic acid in the aqueous dispersions.

Process for reducing the residual monomer content in aqueous plastics

Process for lowering the residual monomer content in aqueous plastic dispersions based on polyvinyl esters. Preparation of vinyl ester polymers or vinyl ester copolymers containing aqueous plastic dispersions having reduced contents of undesired residual vinyl ester monomers, caused by the preparation, and, optionally, acetaldehyde from corresponding starting dispersions, such as are obtainable from ethylenically unsaturated monomers by conventional polymerization or copolymerization methods, by selective alkaline saponification of the residual vinyl ester monomers saponifiable under alkaline conditions in the dispersions and preferably simultaneous removal of the acetaldehyde and unsaponified residual vinyl ester monomers from the aqueous dispersions by distillation. Use of the plastic dispersions free from residual monomer as binders in low-emission or emission-free aqueous formulations, for example for paints, coatings, plaster mortars, adhesives, paper sizing agents, nonwoven binders, textile auxiliaries, and the like, in particular for applications in indoor areas or in closed rooms.

Process for lowering the residual monomer content in aqueous plastic

Preparation of biocidal polymers and copolymers based on free radical-polymerizable and copolymerizable ethylenically unsaturated monomers containing monomer units composed of BCM salts of ethylenically unsaturated carboxylic acids, sulfonic acids or phosphonic acids, solutions thereof and preferably aqueous dispersions thereof. Processes for their preparation and their use as fungicidal and algicidal impregnating agents, paints and finishing agents for scumbles and dispersion paints providing protection against blue staining on wood, for synthetic resin renderings, for exposed concrete paints and for textile finishing agents.

Biocidal Monomeric BCM salts

Dispersion polymers based on ethylenically unsaturated monomers, the polymers containing at least 1% by weight of specific monomer units of ethylenically unsaturated urea derivatives (see formula I), process for their preparation particularly by free-radical initiated emulsion, suspension or bead polymerization or copolymerization and their use as coating compositions, preferably in the form of aqueous dispersions, particularly as corrosion inhibiting metal coating compounds, moreover as adhesives, molded plastics and as binders, thickeners and auxiliaries in industrial chemical compositions.

Dispersion polymers which contain urea groups and are based on

Polymers based on ethylenically unsaturated monomers contain at least 0.1% by weight of monomer units comprising specific ethylenically unsaturated, fluorine-containing and polymerization-capable or copolymerization-capable urethane derivatives (see formula I). The process for the preparation of the polymers or copolymers from the monomers from which they are built up by free-radical initiated polymerization or copolymerization, preferably by a method of emulsion polymerization. The use of the polymers as a starting material for the production of films, sheets, fibers, adhesives, paints, compression-molding compositions and moldings, as a thickener in aqueous preparations, as an impregnant, binder or coating agent for various industrial or chemotechnological areas of application.

Florourethane group-containing polymers made from ethylenically

Biocidal polymers and polymer dispersions, processes for their

Ethylenically unsaturated, fluorine-containing urethane derivatives (see Formula I) whose urethane group is substituted on its carboxyl radical by a fluorinated organic radical and on its nitrogen atom by an unfluorinated, ethylenically unsaturated organic radical. Their preparation can be carried out by reacting ethylenically unsaturated, unfluorinated isocyanates with fluorinated organic hydroxyl compounds in bulk in the absence of water or advantageously in inert organic solvents or in ethylenically unsaturated monomers capable of polymerization which behave inertly under the reaction conditions, it being possible to obtain the urethane derivatives directly in liquid or highly viscous or waxy or solid or crystalline form. Urethane derivatives prepared according to the invention are usually readily to very readily soluble in standard nonaqueous, nonpolar inert organic solvents or in various monomers capable of copolymerization. They can be polymerized or copolymerized in a free-radical way and used to prepare polymers or copolymers.

Ethylenically unsaturated, florine-containing urethane derivatives and

Copolymers based on ethylenically unsaturated monomers and containing urethane groups, processes for their preparation and their use. Copolymers prepared by free-radical-initiated copolymerization of ethylenically unsaturated copolymerizable monomers, in which the copolymers are preferably synthesized from

Copolymers based on ethylenically unsaturated monomers and containing

The preparation of dispersion polymers based on ethylenically unsaturated monomers and containing at least 1% by weight of specific monomer units comprising esters or amides of ethylenically unsaturated carboxylic acids which are capable of (co)polymerization and contain urethane groups in the ester or amide radicals, by emulsion, suspension or bead polymerization or copolymerization initiated by means of free radicals, and the use thereof, if appropriate in aqueous dispersion form, as coating agents, adhesives, molded plastics and as binders, thickeners and auxiliaries in industrial chemical preparations.

Dispersion polymers based on ethylenically unsaturated monomers and

Dispersion polymers of ethylenically unsaturated monomers which are prepared in the presence of protective colloids and if appropriate emulsifiers by polymerization in an aqueous medium and are present in aqueous dispersion form or in finely dispersed dry powder form. They contain, as protective colloids, water-soluble graft polymers containing vinyl alcohol units on a polyurethane grafting base, the polyurethane grafting bases containing at least 2 urethane groups in the molecule prepared by reacting diisocyanates and diols, and polymer radicals of units of carboxylic acid vinyl esters having 3 to 20 carbon atoms and/or hydrolysis products thereof and if appropriate units of other ethylenically unsaturated monomers and/or hydrolysis products thereof being grafted onto the polyurethane grafting bases. The amount of vinyl alcohol units in the water-soluble graft polymers is at least 20% by weight and the degree of hydrolysis of the monomer units originally grafted onto the polyurethane grafting bases is at least 50 mol%. The organic dispersion polymers are useful as a coating composition, as binders for building materials and as a starting material for the preparation of molding compositions, adhesives, binders, impregnating agents and paints.

Organic dispersion polymers based on ethylenically unsaturated monomers

Urea derivatives with .alpha.,.beta.-ethylenically unsaturated carboxyl or carboxamide radicals, produced by reaction of ethylenically unsaturated isocyanates with ammonia or amines or by reaction of ethylenically unsaturated amines with isocyanates in the absence of water, optionally in bulk, it being possible to carry out the reaction for improved reaction control advantageously in inert organic solvents or also in so-called reactive diluents, i.e. copolymerizable ethylenically unsaturated monomeric compounds which remain inert under the reaction conditions, such as for example vinyl esters, (meth)acrylates, vinyl aromatics. The urea derivatives produced according to the invention have in their monomeric form slight to moderate or in some cases good solubility in water and/or in organic solvents. They are polymerizable or copolymerizable via their .alpha., .beta.-ethylenically unsaturated carboxyl or carboxamide groups and can be multiferiously used by free-radical initiated polymerization or copolymerization for the production of polymers or copolymers.

Ethylenically unsaturated urea derivatives

Use of fine-particled biocidal aqueous cationic dispersions of polymers as biocidal treatment agents for substrates at risk from microbes, preferably for fungicidal, bactericidal and/or algicidal treatments. The dispersions of polymers used are biocidal cationic dispersions of polymers which can be obtained from suitable monomers by emulsion polymerization and which contain biocidal cationically surfactant quaternary organic ammonium compounds, preferably tetra-substituted ammonium compounds of the formula (I) and/or alkyl- or alkenylpyridinium compounds of the formula (II), in particular in an amount of 0.1 to 20% by weight, based on the disperse polymer. The average particle diameter of the polymer particles in the biocidal cationic dispersions of polymers is preferably 0.02 to 0.5 .mu.m at a cationic activity of 1.5 to 600 .mu.mol per g of solid, measured at pH 7, and the solids content of the dispersions is preferably 3 to 40% by weight. The biocidal cationic dispersions are preferably used as treatment agents for the preservation of wood, for emulsion paint films and for polymer plasters or synthetic resin plasters, it being possible for the biocidal treatments which can be achieved to display surprising long-term biological actions.

Aqueous biocidal cationic dispersions of polymers and their use as

Disperson polymers which contain urea groups and are based on

Use of finely divided aqueous cationic dispersions of synthetic resins obtainable by emulsion polymerization from suitable monomers and which contain cationic dispersion polymers, as impregnants and primers for consolidating and priming of porous absorbent substrates, preferably inorganic substrates such as, for example, masonry, concrete, plaster surfaces, gypsum surfaces, bricks or wood, by treating these substrates with the aqueous cationic dispersions whose polymer particles have mean particle diameters of 0.02 to 0.2 .mu.m. Aqueous cationic dispersions of synthetic resins exhibit a superior penetrating and permeating power, in particular on smooth plaster surfaces and smooth gypsum surfaces, compared with aqueous anionic or non-ionic dispersions of synthetic resins. Moreover they have no tendency to foam formation and can, in contrast to aqueous anionic or non-ionic dispersions of synthetic resins, exhibit a sealing action against staining, water-soluble substances, such as tarry products (tobacco smoke), resins, wood constituents (tanning) and dyes, which is of particular advantage for example in the building trade in the renovation of old buildings.

Growing community of inventors

Egelsbach, Germany

Hans-Ullrich Huth