Abstract: The invention relates to a process for producing water-soluble or water-swellable polymer products from acrylic acid and/or acrylic acid derivatives partially or completely neutralized with nitrogen compounds and with exceedingly low levels of residual monomers, which process is characterized by subsequent heating of the polymer product at temperatures of from 120 to 240° C. The polymers produced accordingly are suitable for use as flocculants, dispersants and absorbers.

Abstract: The invention relates to a process for producing water-soluble or water-swellable polymer products with low levels of residual monomers using acrylic acid and/or acrylic acid derivatives, which process is characterized by adding a nitrogen compound to the monomer solution to be polymerized and subsequent heating of the polymer product at temperatures of from 120 to 240° C. The polymers produced accordingly are suitable for use as flocculants, dispersants and absorbents.

Abstract: The invention relates to a method for producing water-soluble or water-swellable polymerizates with a low residual monomer content from acrylic acid and/or acrylic acid derivatives. The method is characterized by the addition of a nitrogen compound to the monomer solution to be polymerized, an in that the polymerizate is subsequently heated at temperature of 120 to 240° C. The polymerizates produced according to the inventive method are suitable as flocculants, dispersants and absorbers.

Abstract: The invention relates to a process for producing water-soluble or water-swellable polymer products with low levels of residual monomers using acrylic acid and/or acrylic acid derivatives, which process is characterized by adding a nitrogen compound to the monomer solution to be polymerized and subsequent heating of the polymer product at temperatures of from 120 to 240° C. The polymers produced accordingly are suitable for use as flocculants, dispersants and absorbents.

Abstract: The present invention relates to a powdery, cross-linked polymer absorbing water and aqueous liquids formed of polymerized, unsaturated, acid groups-containing monomers that are present as salts neutralized to the extent of at least 50 mol-% and which optionally comprise further monomers which are copolymerizable with the acid groups-containing monomers as well as water-soluble polymers, the polymer being formed of acidic, polymerized monomers partially neutralized to the extent of 5-30 mol-%, relative to the acid groups-containing monomer portion. The polymer has a high retention, high liquid absorption under pressure, high swelling pressure, and a low content of soluble components.

Abstract: The present invention relates to layered bodies consisting of at least one plastic foam and/or latex foam layer and particulate, superabsorbent polymers for the absorption of water and aqueous liquids, which bodies comprise the superabsorber on, between, or below the foamed plastic and/or latex layer in a quantitatively and/or locally predetermined and fixed areal configuration at a quantity ratio of plastic and/or latex foam to the superabsorber of 1:500 to 50:1. The plastic/latex foam may comprise fillers, pigments and/or synthetic fibers. The layered bodies have an increased absorption capacity for water and aqueous liquids; in particular under load. They are manufactured by spreading out the foam, applying the superabsorber in the predetermined quantity ratio, optionally by using a stencil, and by fixing it by means of a heat treatment.

Abstract: The present invention relates to cross-linked polymers absorbing aqueous liquids, which are built up of partially neutralized, mono-ethylenically unsaturated, acid groups-containing monomers, optionally further monomers copolymerizable with these, as well as optional polymers suitable as a graft basis, and that can be produced by using cross-linking agents of polyunsaturated amino alcohols. The used cross-linking agents are reaction products of (meth)allylamines with monoglycidyl compounds, di-, tri- or tetraglycidyl compounds, and optional alkylene oxide; reaction products of (meth)allylamines or saturated primary amines with (meth)acrylglycide esters and/or (meth)allyl glycidyl ethers and optional alkylene oxide; as well as reaction products of di- and polyamides with (meth)allyl glycide esters and/or (meth)acrylglycide esters and optional alkylene oxide.

Abstract: The present invention relates to a powdery, cross-linked polymer absorbing water and aqueous liquids formed of polymerized, unsaturated, acid groups-containing monomers that are present as salts neutralized to the extent of at least 50 mol-% and which optionally comprise further monomers which are copolymerizable with the acid groups-containing monomers as well as water-soluble polymers, the polymer being formed of acidic, polymerized monomers partially neutralized to the extent of 5-30 mol-%, relative to the acid groups-containing monomer portion. The polymer has a high retention, high liquid absorption under pressure, high swelling pressure, and a low content of soluble components.

Abstract: The invention relates to sheet-like absorbents for water and aqueous solutions, containing at a defined distributionA) at least one water-swellable synthetic and/or natural superabsorbent polymer, andB) at least one water-soluble synthetic and/or natural polymeras a matrix of sheet-like design wherein the superabsorbent component A) is integrated or fixed. The sheet-like absorbents have an increased absorptive capacity for water and aqueous liquids, particularly under load. They are manufactured by forming a sheet-like matrix from the water-soluble synthetic and/or natural polymers B) and providing same with said water-swellable synthetic and/or natural superabsorber A), e.g., by applying a solution of matrix B) on a surface, sprinkling same with component A), and drying the sheet-like structure thus obtained.

Abstract: New leather dressing agents, which may be obtained by polymerization ofa1) 70-100 wt. % acrylic acid and/or methacrylic acid and/or acid chlorides and/or anhydrides thereof witha2) 0-30 wt. % of other water-soluble monomers copolymerizable with a1), anda3) 0-20 wt. % of water-insoluble monomers copolymerizable with a1) and a2), reaction of the polymer with fatty amines, and neutralization and dispersion of the thus modified polymer, with amines not bound to the polymer optionally being reacted with (meth)acrylic acid to give N-substituted .beta.-aminopropionic acids, production of said leather dressing agents and their use in the manufacture of low-fogging leathers.

Abstract: The invention relates to layered bodies for absorbing water and aqueous liquids, consisting of at least one water-soluble polymer foam layer and particulate superabsorbent polymerizates, which contain the superabsorber on top of, between or underneath the foamed polymer layer in a quantitatively and/or locally predetermined and fixed sheet-like arrangement at a quantity ratio of polymer foam and superabsorber of from 1:500 to 50:1. The polymer foam may contain fillers, pigments and/or synthetic fibers. The layered bodies have increased absorptive capacity for water and aqueous liquids, particularly under load. They are produced by spreading the foam in a sheet-like fashion, applying the superabsorber at the predetermined quantity ratio, optionally using a template, and fixing it by a heat treatment.

Abstract: The present invention relates to agents for the pulp and/or surface sizing of paper, which comprise aqueous, solventless dispersions of cationic polymers, and to a process for sizing paper by using said agent. The sizing agents according to the present invention which can be used both in pulp and surface sizing obtain as active substance copolymers ofa) 30-70 mole-% of a monomer Iwithb) 70-30 mole-% of a monomer II,and optionallyc) 0-20 mole-% of C.sub.8 -C.sub.30 monoolefins,andd) 0-10 mole-% of further monomers copolymerizable with a), b), and optionally c), the sum of monomers a), b), c), and d) amounting to 100 mole-%.

Abstract: The present invention relates to alkoxy-groups-containing copolymers of a) 1 to 99%-wt. water soluble ethylenically unsaturated, acid-groups-containing monomers, b) 1 to 50%-wt. monomers having a polyalkoxy sequence and c) 0 to 60%-wt. water soluble monomers which are copolymerizable with a) and b); and to the use of said copolymers for retanning leathers previously tanned by a mineral or combined method. The leathers treated with the retanning agents according to the invention in particular stand out for an improved fullness and good grain tightness.The acid groups of monomers a) preferably are carboxyl groups.

Abstract: The present invention relates to layered bodies consisting of at least one plastic foam and/or latex foam layer and particulate, superabsorbent polymers for the absorption of water and aqueous liquids, which bodies comprise the superabsorber on, between, or below the foamed plastic and/or latex layer in a quantitatively and/or locally predetermined and fixed area, configuration at a quantity ratio of plastic and/or latex foam to the superabsorber of 1:500 to 50:1. The plastic/latex foam may comprise fillers, pigments and/or synthetic fibers. The layered bodies have an increased absorption capacity for water and aqueous liquids, in particular under load. They are manufactured by spreading out the foam, applying the superabsorber in the predetermined quantity ratio, optionally by using a stencil, and by fixing it by means of a heat treatment.

Abstract: The present invention relates to powdery, water-swellable, cross-linked polymers having a high absorption capacity for aqueous liquids, in particular body fluids, under load, which polymers are formed of:a) 55-99.9%-wt. acid-groups-containing monomers which are neutralized to the extent of at least 50 mole-%,b) 0-40%-wt. of monomers which are copolymerizable with a),c) 0.1-5.0%-wt. of at least one cross-linking agent,d) 0-30%-wt. of a water-soluble polymer.The cations of the salts according to a) are Li.sup.+, Na.sup.+, preferably K.sup.+, Cs.sup.+, Rb.sup.+, as well as primary, secondary, and tertiary methyl ammonium ions, either alone or in combination. The polymers are manufactured in that a blowing agent based on carbon dioxide is added to the monomers, followed by polymerization, that the polymer is dried and then heated to a temperature of 100.degree.-300.degree. C. with one or several compounds which are reactive for surface cross-linkage.

Abstract: The present invention relates to absorbents for aqueous acids or lyes comprising cross-linked, polycationic homopolymers and topolymers of quaternized, monoethylenically unsaturated carboxylic acid amino esters and/or carboxylic acid amides of the formula?CH.sub.2 =C(--R.sub.1)--CO--X--(CH.sub.2).sub.n --C(--R.sub.2, --R.sub.3)--CH.sub.2 --N(--R.sub.4,--R.sub.5,--R.sub.6)!.sup..sym. Y,(A),whereinR.sub.1 represents hydrogen or the methyl group,R.sub.2 and R.sub.3 represent hydrogen or the same or different alkyl groups having 1 to 4 C-atoms,R.sub.4, R.sub.5 and R.sub.6 represent the same or different alkyl groups having 1 to 4 C-atoms,n stands for 0 or 1,X stands for --O-- or --NH--, andY represents an anionic acid residue.

Abstract: The invention relates to a process for the fat liquoring/softening of leathers and furs by treatment with an aqueous dispersion of a copolymer obtainable by polymerization of a) maleic anhydride, b) C.sub.12 -C.sub.30 alpha-olefins, esters of (meth)acrylic acid and/or maleic acid with C.sub.12 -C.sub.30 alcohols and c) optionally, further hydrophilic, ethylenically unsaturated monomers which are copolymerizable with a) and b), reaction of the anhydride groups with monovalent alcohols comprising at least one ether functionality, and partial neutralization or hydrolysis of the residual acid or anhydride groups and manufacture of a flowable dispersion having an active substance content of at least 40%-wt.

Abstract: The present invention relates to a process for producing water-absorbing sheet-like materials which consist of a water-absorbent polymer and a prefabricated nonwoven fabric, wherein the prefabricated nonwoven fabric is impregnated with a solution comprising partially neutralized acrylic acid and at least one cross-linking agent and is squeezed to a certain coating amount, and the monomer solution thus applied is characterized in that the polymerization is carried out in the presence of radical initiators which cannot be activated thermally and at least one thermally activatable radical former used in addition. The additional use of a thermally activatable radical former in the polymerization results in products having a low residual monomer content, an improved water absorption under load, and a higher retention, with a production method being employed which is technically simple and economically efficient at the same time.

Abstract: Polymers consisting of (a) 1-50% weight of N-allyliminodiacetic acid and its salts; (b) 50-99% weight of one or several unsaturated, polymerisable carboxylic acids having the formula (I), in which R.sup.1 stands for hydrogen, C.sub.1-C.sub.4 alkyl or COOM, R.sup.2 stands for hydrogen or C.sub.1-C.sub.4 alkyl, R.sup.3 stands for hydrogen, C.sub.1-C.sub.4 alkyl or CH.sub.2 COOM and M stands for hydrogen, ammonium, an alkali metal or an alkaline earth metal; and (c) 0-40% by weight water soluble monomers copolymerisable with (a) and (b). These polymers preferably contain acrylic acid, methacrylic acid and maleic acid as unsaturated polymerisable carboxylic acids. Also disclosed are the use of these polymers as complexing agents, as peroxide stabilizers and builders in washing products, as dispersing agents and hardness stabilizers.

Abstract: The present invention relates to a process for the production of water-swellable products, using very fine particles of water-swellable polymers, characterized by the following steps: a) the very fine particles of water-swellable polymer are dispersed in a monomer which is liquid at room temperature and does not cause the polymeric superfines to swell, b) the dispersion obtained in step a) is mixed with an aqueous monomer solution, c) the mixture obtained in step b) is polymerized by the addition of catalysts and/or by exposure, and d) the polymer gel is comminuted and dried. The present invention further relates to a water-insoluble, water-swellable polymer which absorbs aqueous and serous liquids and blood, and is obtained by the process described above.