Pva hydrogel

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 3/28 (2006.01) C08L 29/04 (2006.01)

Patent

CA 2582779

The present invention provides methods of making covalently crosslinked vinyl polymer hydrogels having advantageous physical properties, and covalently crosslinked vinyl polymer hydrogel compositions made by such methods, as well as articles of manufacture comprising such covalently crosslinked vinyl polymer hydrogel compositions. The physical properties of the produced hydrogels can be adjusted by varying controlled parameters such as the proportion of physical associations, the concentration of polymer and the amount of radiation applied. Such covalently crosslinked vinyl polymer hydrogels can be made translucent, preferably transparent, or opaque depending on the processing conditions. The stability of the physical properties of the produced vinyl polymer hydrogel can be enhanced by controlling the amount of covalent crosslinks.

La présente invention concerne des procédés de fabrication d'hydrogels de polymères de vinyle réticulés de façon covalente, présentant des propriétés physiques avantageuses, des compositions d'hydrogels de polymères de vinyle réticulés de façon covalente, fabriqués selon l'invention, et des produits de fabrication contenant de telles compositions d'hydrogels de polymères de vinyle réticulés de façon covalente. Les propriétés physiques des hydrogels produits peuvent être ajustées par variation de paramètres tels que la proportion des associations physiques, la concentration de polymères et la quantité de rayonnement appliqué. De tels hydrogels de polymères de vinyle réticulés de façon covalente peuvent être translucides, de préférence transparents, ou opaques selon les conditions de traitement. La stabilité des propriétés physiques de l'hydrogel de polymères de vinyle produit peut être améliorée par commande de la quantité de doubles liaisons covalentes.

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