摘要:
Superabsorbent material, comprising first superabsorbent polymers, coated with second clay-crosslinked superabsorbent polymers, said second clay-crosslinked superabsorbent polymers being obtainable by the step of polymerization of a solution/dispersion of polymerizable compounds and clay particles, to obtain said second superabsorbent polymers, crosslinked by said clay particles, of a weight average largest particle dimension of less than 800 nm.
摘要:
Superabsorbent material, comprising clay-crosslinked superabsorbent polymers, obtainable by polymerizing in a spray-stream, polymerizable compounds in the presence of a polymerization initiator system, and nano-sized or individual clay particles, which are all introduced into a vessel by a spraying step in the form of a said spray-stream thereof, whereby said clay particles crosslink said polymers during polymerization. The invention also relates to such a process and absorbent articles comprising such superabsorbent material.
摘要:
Superabsorbent material, comprising clay-crosslinked superabsorbent polymers, obtainable by polymerizing in a spray-stream, polymerizable compounds in the presence of a polymerization initiator system, and nano-sized or individual clay particles, which are all introduced into a vessel by a spraying step in the form of a said spray-stream thereof, whereby said clay particles crosslink said polymers during polymerization. The invention also relates to such a process and absorbent articles comprising such superabsorbent material.
摘要:
An aqueous acidic polymerization liquid comprising polymerizable monomers or oligomers with carboxylate and/or carboxylic acid moiety or moieties, and edge modified clay that is homogenously dispersable in said liquid is provided, and also methods for making such liquids, and also edge-modified-clay linked water-absorbing polymers made by with said liquids and methods, and disposable absorbent articles comprising such edge-modified-clay linked water-absorbing polycarboxylate/polycarboxylic acid polymers.
摘要:
An aqueous acidic polymerization liquid comprising polymerisable monomers or oligomers with carboxylate and/or carboxylic acid moiety or moieties, and basal surface modified clay that is homogenously dispersable in said liquid is provided, and also methods for making such liquids, and also surface-modified-clay linked water-absorbing polymers made with said liquids and methods, and disposable absorbent articles comprising such surface-modified-clay linked water-absorbing polycarboxylate/polycarboxylic acid polymers.
摘要:
An aqueous acidic polymerization liquid comprising polymerisable monomers or oligomers with carboxylate and/or carboxylic acid moiety or moieties, and edge modified clay that is homogenously dispersable in said liquid is provided, and also methods for making such liquids, and also edge-modified-clay linked water-absorbing polymers made by with said liquids and methods, and disposable absorbent articles comprising such edge-modified-clay linked water-absorbing polycarboxylate/polycarboxylic acid polymers.
摘要:
An aqueous acidic polymerization liquid comprising polymerizable monomers or oligomers with carboxylate and/or carboxylic acid moiety or moieties, and basal surface modified clay that is homogenously dispersable in said liquid is provided, and also methods for making such liquids, and also surface-modified-clay linked water-absorbing polymers made with said liquids and methods, and disposable absorbent articles comprising such surface-modified-clay linked water-absorbing polycarboxylate/polycarboxylic acid polymers.
摘要:
Processes for making water-absorbent cross-linked polymers, such as polyacrylic acids/polyacrylates, using supercritical medium; and water-absorbent polymers, e.g. particles thereof, obtained by such processes, where such particles may be porous.
摘要:
Method for determining the intrinsic gel strength of a water-absorbing hydrogel-forming polymeric material, comprising the step of: obtaining a hydrogel of said water-absorbing polymeric material, submitting said hydrogel to a controlled strain application step and measuring the stress; or submitting said hydrogel to a controlled stress application step and measuring the strain, and determining from said measured stress or strain of step c) the modulus of said hydrogel.
摘要:
A method of surface cross-linking superabsorbent polymer particles having a relatively high degree of neutralization is provided. Brønsted acids are selectively applied onto the surface of the superabsorbent polymer particles to selectively facilitate a relatively high number of protonated carboxyl groups at the surface of the superabsorbent polymer particles while the relatively high degree of neutralization in the core of the superabsorbent polymer particles remains substantially unaffected.