摘要:
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. The polymers according to the present invention provide superabsorbers whose property level meets the practice-oriented requirements with respect to retention, absorption under pressure, swelling pressure, and permeability for aqueous liquids. Such polymers are used as absorbents for water and aqueous liquids in constructions for the absorption or body fluids, in current-conducting and light-transmitting cables, and in the cultivation of plants.
摘要:
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.
摘要:
The present invention discloses the use of polymers which have built-in by polymerization 20 to 70%-wt. of a hydrophobic monomer selected from long-chain alpha-olefins, long-chain alkyl(meth)acrylates, vinyl esters of long-chain carboxylic acids, long-chain vinyl ethers, or mixtures of these monomers, 1 to 60%-wt. of a monomer with a specific polysiloxane group, and 20 to 35%-wt. water-soluble, unsaturated acids, unsaturated C.sub.4 -C.sub.6 dicarboxylic anhydrides, semi-esters or semi-amides of unsaturated C.sub.4 -C.sub.6 dicarboxylic acids, or mixtures of these monomers, in partially neutralized form as aqueous solution or dispersion, for softening, fat-liquoring and greasing, or hydrophobing leathers and furs.
摘要:
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. These layered bodies are used in hygienic articles, as components in natural or artificial soils, as insulating material for pipes and ducts, primarily for cables and constructional elements, as liquid-absorbing and liquid-storing component in packaging materials, and as a part in garments.
摘要:
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. These polymers are suitable as component in sanitary articles which absorb body fluids and in wound dressings, as component in diapers, sanitary napkins, and incontinence articles, as component in current-conducting and light-transmitting cables, as soil conditioner, artificial soil for plant breeding, and as component in packaging materials.
摘要:
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), wherein R.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--, and Y represents an anionic acid residue.
摘要:
To obtain highly sulfated fatty acids, hydroxy fatty acids or oxalkylated hydroxy fatty acids, the reaction mixture obtained from the sulfatation of unsaturated fatty acid esters and/or saturated hydroxy fatty acid ester and/or oxalkylated hydroxy fatty acid esters is neutralized, optionally separated from the brine, diluted with water and hydrolyzed at a temperature between 20.degree. C. and 160.degree. C. after addition of lye the amount of which at maximum is equivalent to the organically bonded sulfuric acid content. After phase separation from the non-sulfated starting products, the highly sulfated fatty acids are isolated from the aqueous phase.
摘要:
The invention relates to new cross-linked copolymers containing carboxyl groups and especially useful as thickening agents for aqueous and organic solvents, which copolymers contain(A) 20 to 100% by weight of olefinically unsaturated carboxylic acids,(B) 0 to 80% by weight of at least one mono-olefinically unsaturated monomer copolymerizable with the components A and C, and(C) 0.1 to 4% by weight, calculated on the total quantity of monomers, of allyl monomer of the general formula ##STR1## in which n=0, 1 or 2,m=1, 2 or 3, wherein n+m=3,R.sub.1 =hydrogen, or an alkyl, alkoxyalkyl, haloalkyl, cycloalkyl, aryl, alkaryl, aralkyl or alkenyl radical, andR.sub.2 and R.sub.3, which may be the same or different, each represents hydrogen or an allyl, alkyl, cycloalkyl, aryl, aralkyl or alkaryl radical,wherein at least two of the radicals R.sub.1, R.sub.2 and R.sub.3 must be an allyl radical or a substituted allyl radical.
摘要:
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-%.
摘要:
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. These layered bodies are used in hygienic articles, as components in natural or artificial soils, as insulating material for pipes and ducts, primarily for cables and constructional elements, as liquid-absorbing and liquid-storing component in packaging materials, and as a part in garments.