PROCESS FOR THE PRODUCTION OF BIODEGRADABLE SUPERABSORBENT POLYMER WITH HIGH ABSORBENCY UNDER LOAD BASED ON STYRENE MALEIC ACID COPOLYMERS AND BIOPOLYMER
The invention describes a method for the production of a biodegradable superabsorbent composite polymer material, characterized by high absorbency under load. The invention also describes novel composite material made of styrene maleic acid copolymer preferably in salt form and a biopolymer, coated with biodegradable coating agents and crosslinked.
A61L 15/60 - Matériaux gonflant avec les liquides pour former un gel, p. ex. super-absorbants
A61L 15/22 - Bandages, pansements ou garnitures absorbant les fluides physiologiques tels que l'urine, le sang, p. ex. serviettes hygiéniques, tampons contenant des matériaux macromoléculaires
A61L 15/32 - Protéines, polypeptidesLeurs produits de dégradation ou leurs dérivés, p. ex. albumine, collagène, fibrine, gélatine
A multi-layer absorbent product is provided that includes a first layer that is either liquid permeable or liquid impermeable and a layer of a treated nonwoven, woven or knitted textile material or a treated textured plastic yarn. The layer of textured plastic yarn or of nonwoven, woven or knitted textile material has uniformly spaced deposits of a natural polymer crosslinked to a synthetic polymer in the absence of non-polymeric crosslinking agent, where each of the deposits is a continuous polymer network that covers the textile or plastic underneath the deposit and interpenetrates the network of textile fibers or of plastic pores acting as a scaffold to interconnect the polymer network with the fiber network or with the network of plastic pore walls. A process for preparing the layer of textile material or of textured plastic yarn with uniformly spaced deposits is also provided.
The present invention relates to polymeric soil conditioner Absorbency stability as a new water absorbing polymeric material and a process for the production of water absorbing materials consisting of a combination of synthetic polymers and biopolymers, with an improved high water absorbency at repeated watering, capable to reduce the effect of accumulation of salts in polymeric matrix as of multiple cycles of swelling-deswelling that occurs during all period of living of vegetable culture, by decreasing of crosslinking density of three dimensional network of the material caused by biochemical processes that developed in polymeric gels.
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
A multi-layer absorbent product is provided that includes a first layer that is either liquid permeable or liquid impermeable and a layer of a treated nonwoven, woven or knitted textile material or a treated textured plastic yarn. The layer of textured plastic yarn or of nonwoven, woven or knitted textile material has uniformly spaced deposits of a natural polymer crosslinked to a synthetic polymer in the absence of non-polymeric crosslinking agent, where each of the deposits is a continuous polymer network that covers the textile or plastic underneath the deposit and interpenetrates the network of textile fibers or of plastic pores acting as a scaffold to interconnect the polymer network with the fiber network or with the network of plastic pore walls. A process for preparing the layer of textile material or of textured plastic yarn with uniformly spaced deposits is also provided.
A01G 13/02 - Couvertures protectrices pour les plantes; Dispositifs pour leur mise en place
A61F 13/532 - Garnitures absorbantes, p. ex. serviettes ou tampons hygiéniques pour application externe ou interne au corpsMoyens pour les maintenir en place ou les fixerApplicateurs de tampons caractérisées par le milieu absorbant ayant une composition homogène sur toute l'épaisseur du noyau absorbant non homogène dans le plan de la garniture absorbante
A61L 15/60 - Matériaux gonflant avec les liquides pour former un gel, p. ex. super-absorbants
A61L 15/62 - Matériaux hydrosolubles ou hydrodégradables
B32B 27/32 - Produits stratifiés composés essentiellement de résine synthétique comprenant des polyoléfines
5.
Liquid polymer solution for treating nonwoven webs
The present invention relates to a process for production of water-absorbing textile composite materials comprising the use of a polymeric composite solution and a textile material (non-woven, woven and other). The textile material is impregnated with the composite polymeric solution, which after thermal treatment is cross-linked in situ. More particularly, the present invention relates to an absorbent textile composite article comprising textile fibers and a polymers network interpenetrating the textile fibers, the polymers network comprising natural polymer crosslinked to synthetic polymer in the absence of non-polymeric crosslinking agent. The textile composite article exhibits excellent absorbency of aqueous media such as food liquids, cosmetic liquids, pharmaceutical liquids or human body secretions.
A61L 15/22 - Bandages, pansements ou garnitures absorbant les fluides physiologiques tels que l'urine, le sang, p. ex. serviettes hygiéniques, tampons contenant des matériaux macromoléculaires
A61L 15/42 - Utilisation de matériaux caractérisés par leur fonction ou leurs propriétés physiques
A61L 15/46 - Désodorisants ou produits pour neutraliser les mauvaises odeurs, p. ex. pour inhiber la formation d'ammoniac ou la multiplication de bactéries
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B01J 20/30 - Procédés de préparation, de régénération ou de réactivation
D06M 15/233 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone d'hydrocarbures, ou de leurs produits de réaction, p. ex. posthalogénés ou sulfochlorés aromatiques, p. ex. de styrène
D06M 15/263 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone d'acides carboxyliques non saturésLeurs sels ou esters
D06M 23/06 - Procédés dans lesquels l'agent traitant est dispersé dans un gaz, p. ex. aérosols
Process for the production of biodegradable superabsorbent polymer with high absorbency under load based on styrene maleic acid copolymers and biopolymer
The invention describes a method for the production of a biodegradable superabsorbent composite polymer material, characterized by high absorbency under load. The invention also describes novel composite material made of styrene maleic acid copolymer preferably in salt form and a biopolymer, coated with biodegradable coating agents and crosslinked.
A61L 15/16 - Bandages, pansements ou garnitures absorbant les fluides physiologiques tels que l'urine, le sang, p. ex. serviettes hygiéniques, tampons
A61L 15/22 - Bandages, pansements ou garnitures absorbant les fluides physiologiques tels que l'urine, le sang, p. ex. serviettes hygiéniques, tampons contenant des matériaux macromoléculaires
A61L 15/32 - Protéines, polypeptidesLeurs produits de dégradation ou leurs dérivés, p. ex. albumine, collagène, fibrine, gélatine
A61L 15/60 - Matériaux gonflant avec les liquides pour former un gel, p. ex. super-absorbants