2008
DOI: 10.1590/s0104-14282008000200011
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Dispersiones acuosas de poliuretano bloqueado: una alternativa como agente curtiente

Abstract: además son potencialmente capaces de servir como agentes curtientes. A nivel industrial sólo el formaldehído y el glutaraldehído son utilizados como agentes de reticulación molecular con la colágena [1] . Probablemente el número, tamaño y localización de la reticulación así como los cambios en la carga electrostática y carácter hidrofílico-hidrofóbico de la colágena juegan un papel determinante en las propiedades del cuero resultante.Los diisocianatos han sido usados en la curtición del cuero por su capacid… Show more

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“…Therefore, the blocking reaction of isocyanate with bisulphite salts is an alternative in the preparation of water soluble isocyanates (Petersen, 1949). The protein crosslinking process with blocking isocyanates has the advantages of the use of aqueous media and reduced isocyanate toxicity (Mata-Mata et al, 2008). In this regard, the treatment of perichardial tissue with the carbamoylsulphonate blocked polyurethane prepolymers resulted in an increase of the in vitro tissue biostability (Mendoza-Novelo, 2011).…”
Section: Tissue Crosslinking With Diisocyanatementioning
confidence: 99%
“…Therefore, the blocking reaction of isocyanate with bisulphite salts is an alternative in the preparation of water soluble isocyanates (Petersen, 1949). The protein crosslinking process with blocking isocyanates has the advantages of the use of aqueous media and reduced isocyanate toxicity (Mata-Mata et al, 2008). In this regard, the treatment of perichardial tissue with the carbamoylsulphonate blocked polyurethane prepolymers resulted in an increase of the in vitro tissue biostability (Mendoza-Novelo, 2011).…”
Section: Tissue Crosslinking With Diisocyanatementioning
confidence: 99%