摘要:
The invention relates to a water-absorbent polymer entity, the surface thereof being brought into contact with a combination of a metallic salt and a metal oxide. The invention also relates to a method for treating the surface of water-absorbent polymer entities, whereby the surface of an untreated, water-absorbent polymer entity is brought into contact with a combination of a metallic salt and a metal oxide at a temperature of between 50 and 300 °C. The invention further relates to the water-absorbent polymer entities that can be obtained by said method, a composite containing a water-absorbent polymer entity and a substrate, a method for producing a composite, the composite that can be obtained by said method, chemical products such as foam, moulded bodies and fibres containing water-absorbent polymer entities or a composite, the use of water-absorbent polymer entities or a composite in chemical products, and the use of a combination of a metal oxide and a metallic salt for treating the surface of super-absorbent polymer entities.
摘要:
The present invention relates to a water-absorbent composition, comprising water-absorbent polymer structures having at least one tannin fraction on the surfaces thereof, said fraction having a specific average molecular weight of at least 1,000 g/mol determined according to the testing method described herein, or being a hydrolyzable gallotannin. The present invention also relates to a method for the production of a water-absorbent composition, the water-absorbent composition obtained by said method, a composite, a method for the production of a composite, the composite that can be obtained by said method, chemical products such as hygienic articles, to the use of a water-absorbent composition or of a composite, and to the use of a tannin fraction.
摘要:
The invention relates to water-absorbent polymer entities, the surface thereof being brought into contact with a compound comprising a polycation and at least one anion. The invention also relates to a method for treating the surface of water-absorbent polymer entities, the surface-treated, water-absorbent polymer entities that can be obtained by said method, a composite containing a surface-treated, water-absorbent polymer entity and a substrate, a method for producing a composite, the composite that can be obtained by said method, chemical products such as foam, moulded bodies and fibres containing surface-treated, water-absorbent polymer entities or a composite, the use of surface-treated, water-absorbent polymer entities or a composite in chemical products, and the use of compounds comprising a polycation with a defined structure for the surface-treatment of water-absorbent polymer entities.
摘要:
The invention relates to a method comprising at least the following steps: a) glycerin is dehydrated so as to obtain a dehydrated product containing acrolein; b) the dehydrated product is subjected to gas phase oxidation so as to obtain a monomer gas containing acrylic acid; c) the monomer gas is contacted with a quenching agent so as to obtain a quench phase containing acrylic acid; d) the quench phase is reprocessed so as to obtain a monomer phase containing acrylic acid. A liquid phase (a1) and a gas phase (a2) are provided during the dehydration process, a plurality of gas bubbles being produced in the liquid phase (a1). The invention further relates to a method for producing polymers by polymerizing acrylic acid, preferably for producing water-absorbing polymers, the water-absorbing polymers obtained by means of said method, a compound, a method for producing a compound, the compound obtained by means of said method, and other chemical products.
摘要:
The invention generally relates to a deodorizing super-absorbent composition, a method for producing a deodorizing super-absorbent composition, a compound containing a deodorizing super-absorbent composition, a hygiene article containing a compound, chemical products containing or based on a deodorizing super-absorbent composition or a compound, and the use of a deodorizing super-absorbent composition or a compound in chemical products.
摘要:
The invention relates to a method for producing a water-absorbing polymer structure. Said method comprises the following steps: i) an untreated, water-absorbing polymer structure is provided that has a maximum neutralization rate of 70 mole percent; ii) the untreated, water-absorbing polymer structure is brought in contact with an acid component. The invention also relates to the water-absorbing polymer structures obtained using said method, water-absorbing polymer structures, a compound, a method for producing a compound, the compound obtained using said method, foams, molded articles, fibers, foils, films, cables, sealing materials, liquid-absorbing hygiene articles, carriers for plant growth and fungal growth regulators, packaging materials, soil additives, or construction materials, and the use of a water-absorbing polymer structure.
摘要:
The invention relates to a method for producing a super-absorbent composition, said method comprising the following steps: i. production of a hydrogel by the radical polymerisation of an aqueous monomer solution containing at least one monomer; ii. drying of the hydrogel with a view to obtaining a water-absorbent polymer structure; iii. superficial cross-linking of the water-absorbent polymer structure with a view to obtaining a superficially cross-linked water-absorbent polymer structure; and iv. integration of a starch compound in one, or at least two, of the variants V1 to V6, V1 in method step i in the monomer solution, V2 following method step i and before method step ii in the hydrogel, V3 in method step ii, V4 following method step ii and before method step iii in the water-absorbent polymer structure, V5 in method step iii, and V6 following method step iii on the superficially cross-linked water-absorbent polymer structure. The invention also relates to a super-absorbent composition that can be obtained according to said method, to a particulate super-absorbent composition, and to a composite, a hygiene article core and a hygiene article, other chemical products, and the use of said super-absorbent composition in chemical products.
摘要:
The invention relates to water-absorbent polymer entities, the surface thereof being brought into contact with a compound comprising a polycation and at least one anion. The invention also relates to a method for treating the surface of water-absorbent polymer entities, the surface-treated, water-absorbent polymer entities that can be obtained by said method, a composite containing a surface-treated, water-absorbent polymer entity and a substrate, a method for producing a composite, the composite that can be obtained by said method, chemical products such as foam, moulded bodies and fibres containing surface-treated, water-absorbent polymer entities or a composite, the use of surface-treated, water-absorbent polymer entities or a composite in chemical products, and the use of compounds comprising a polycation with a defined structure for the surface-treatment of water-absorbent polymer entities.
摘要:
The invention relates to a method for producing water-absorbent polymer entities, said method comprising the following steps: I. an untreated, water-absorbent polymer entity (Pu) with a retention of at least 35 g/g, defined according to the described test methods, is provided; and II. said water-absorbent, untreated polymer entity (Pu) is brought into contact with a permeability-increasing agent. The invention also relates to the water-absorbent polymer entities that can be obtained by said method, to water-absorbent polymer entities, a composite, a method for producing a composite, a composite that can be obtained by said method, chemical products containing water-absorbent polymer entities or a composite, and the use of water-absorbent polymer entities or the composite in chemical products.