Ara es mostren els items 47-66 de 72

    • New challenges in chrome-free leathers: development of wet-bright process 

      Bacardit Dalmases, Anna; Armengol, J; van der Burgh, Stefan; Ollé Otero, Lluís (2014-04-01)
      Article
      Accés restringit per política de l'editorial
      The aim of the present work was to develop a new tanning process (wet-bright) that produces perfectly white leather meeting all of the requirements for many kinds of articles, such as automotive, garment and shoe upper. ...
    • Nuevas aplicaciones de la cromatografía iónica en el sector de curtidos 

      Perez Quiñones, Carmen; Bacardit Dalmases, Anna; Ollé Otero, Lluís; Reyes Ferrera, Mª Reyes; Font Vallès, Joaquim (2012)
      Text en actes de congrés
      Accés obert
      La industria de curtidos utiliza gran variedad de productos químicos en las diferentes etapas del proceso de curtición. Una parte de estos productos son absorbidos por las pieles, mientras que el resto pasan a las aguas ...
    • Nuevas soluciones en la reutilización del cromo de los baños finales del proceso de curtición 

      Casas, Concepció; Sorolla, Sílvia; Spinosi, Reno; Bacardit Dalmases, Anna (2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      El proceso de producción de piel wet-blue requiere del uso de sales de cromo de distintas basicidades en función del producto final de piel que se fabrica. Se estima que el consumo en sales de cromo para procesar 1tn de ...
    • Optimización del proceso de pre-curtición mediante recursos naturales sostenibles procedentes de los residuos de la explotación forestal del pino 

      Conde, Mireia; Combalia Cendra, Felip; Ollé Otero, Lluís; Bacardit Dalmases, Anna (2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      La corteza de pino se utilizó como material curtiente hasta la mitad del siglo XX, siendo ésta sustituida por las sales de cromo ya que proporcionan mejores prestaciones al cuero. En la actualidad, los consumidores demandan ...
    • Optimization of two-low salt chrome tanning processes without float 

      Morera Prat, Josep Maria; Bacardit Dalmases, Anna; Ollé Otero, Lluís; Costa, Jose; Banaszak, S (2007-04)
      Article
      Accés restringit per política de l'editorial
      The aim of this study was to develop at pilot plant level two systems of pickle-tanning that would reduce both the amount of waste water and its content in chrome and chlorides while obtaining leathers that are commercially ...
    • Optimizing a Sustainable and Innovative Wet-White Process with Tara Tannins 

      Castell, Joan Carles; Fabregat, Cristina; Sorolla Casellas, Sílvia; Ollé Otero, Lluís; Bacardit Dalmases, Anna; Solano, D (2011-10-05)
      Article
      Accés restringit per política de l'editorial
      This study considers the fruit of the tara tree (Caesalpinia spinosa) as a sustainable source for tanning agents and proposes alternatives to the commercial mineral salts and vegetable extracts to comply with an increasing ...
    • Oxidative unhairing versus sulphide use – A critical comparison 

      Spinosi, Reno; Zamponi, Silva; Bacardit Dalmases, Anna; Berrettoni, Mario (2018-02-05)
      Article
      Accés restringit per política de l'editorial
      The conventional unhairing process is one of the most pollutant steps in the leather tanning process, which usually involves great amounts of sulphides, lime and soda ash, generating high BOD and COD values in the ...
    • Oxidative unhairing versus sulphide use. A critical comparison 

      Spinosi, Reno; Zamponi, Silvia; Ollé Otero, Lluís; Bacardit Dalmases, Anna (2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The conventional unhairing process is one of the most pollutant steps in the leather tanning process, which usually involves great amounts of sulfides lime and soda ash, generating higher BOD and COD values in the wastewater. ...
    • Polysilane cross-linked binders for aqueous finishing 

      Ollé Otero, Lluís; Shendryck, Alexander; Combalia Cendra, Felip; Jorge Sánchez, Juan; Bacardit Dalmases, Anna (2010-06-17)
      Article
      Accés restringit per política de l'editorial
      This study explores the cross-linking reaction between an epoxy functional alkoxysilane and both the leather industry, it can be used in finishing processes. A comparison of results indicates that such cross-linker presents ...
    • Recuperación del tanino procedente de los residuos de la explotación forestal del pino 

      Combalia Cendra, Felip; Conde, Mireia; Ollé Otero, Lluís; Bacardit Dalmases, Anna (2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      El objetivo principal de este trabajo es introducir de nuevo el extracto vegetal procedente de los residuos de la explotación forestal del pino como fuente de taninos que actuando como agente curtiente y recurtiente, ...
    • Reducción en la utilización de compuestos orgánicos volátiles en la industria del curtido 

      Solà, Anna; Cuadros Domènech, Rosa Maria; Ollé Otero, Lluís; Bacardit Dalmases, Anna (2014)
      Text en actes de congrés
      Accés obert
      La curtición es una actividad industrial de larga tradición en Catalunya, que desde unos inicios totalmente artesanales ha ido evolucionando progresivamente. El proceso de curtido se basa en realizar sobre la piel en bruto ...
    • Reducing the use of volatile organic compounds in the leather industry 

      Cuadros Domènech, Rosa Maria; Solà, Anna; Ollé Otero, Lluís; Bacardit Dalmases, Anna (2016-02-22)
      Article
      Accés restringit per política de l'editorial
      The tanning industry uses some pollutant chemicals, which are hazardous and toxic. This paper proposes a modest research contribution to examine how to reduce or replace some of these products by less dangerous and less ...
    • Study of cross-linking reactions of epoxy compounds 

      Bacardit Dalmases, Anna; Shendrik, Alexander; Combalia Cendra, Felip; Jorge Sánchez, Juan; Ollé Otero, Lluís (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Nowadays, the leather industry needs to produce a very wide range of finished articles with different levels of performance to increase their competitiveness while minimizing their environmental impact. To reduce the ...
    • Study of cross-linking reactions of polysilanes 

      Shendrik, Alexander; Bacardit Dalmases, Anna; Ollé Otero, Lluís (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Nowadays, there are four types of commercially available cross-linkers for the leather industry: polyaziridines, polyisocyanates, polycarbodiimides and epoxy compounds. All these products present different chemical reactivity ...
    • Study of cross-linking reactions on butadiene binders in aqueous finishing 

      Bacardit Dalmases, Anna; Shendrik, Alexander; Combalia Cendra, Felip; Jorge Sánchez, Juan; Ollé Otero, Lluís (2010-12-14)
      Article
      Accés restringit per política de l'editorial
      Butadienes, like acrylic binders and polyurethanes, can be cross-linked to improve their wet fastness properties. Nowadays, four types of cross-linkers for leather finishing are available: polyaziridines,polyisocyanates, ...
    • Study of the effect of temperature, relative humidity and UV radiation on chrome-tanned leather ageing 

      Bacardit Dalmases, Anna; Jorba, Montse; Font Vallès, Joaquim; Ollé Otero, Lluís (2012-06-01)
      Article
      Accés restringit per política de l'editorial
      Since leather is strongly affected by three main environmental parameters: temperature, relative humidity and UV radiation, this piece of research focuses on the effect that these three factors have on chrome-tanned leather ...
    • Study of the effect of temperature, relative humidity and UV radiation on wet-white leather ageing 

      Bacardit Dalmases, Anna; Cobos, Mireia; Font Vallès, Joaquim; Jorge Sánchez, Juan; Ollé Otero, Lluís (2010-10-01)
      Article
      Accés restringit per política de l'editorial
      Since upholstery leather is considered a very high-tech product, a long service life is expected by the costumer. However, this type of leather can undergo extreme environmental conditions that may cause premature ageing. ...
    • Study of the Qualitative and Semi-quantitative Analysis of Grape Seed Extract by HPLC 

      Sorolla, Sílvia; Flores, Antònia; Canals Parelló, Trini; Cantero Gómez, María Rosa; Font Vallès, Joaquim; Ollé Otero, Lluís; Bacardit Dalmases, Anna (2018-03-05)
      Article
      Accés restringit per política de l'editorial
      The main aim of this study is to carry out a qualitative and semiquantitative analysis of tannin extracts as an alternative to the official analysis method ISO 14088 – IUC 32, so that a correlation between the two methods ...
    • Study of the weathering variables on chrome-tanned leather ageing 

      Bacardit Dalmases, Anna; Jorba, Montse; Castell, Joan Carles; Font Vallès, Joaquim; Ollé Otero, Lluís (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Since upholstery leather is considered a very high-tech product, a long service life is expected by the costumer. However, this type of leather can undergo extreme environmental conditions that may cause premature ageing. ...
    • Synthesis of highly carboxylate acrylic resins for leather impregnation 

      Ollé Otero, Lluís; Solé, M.M.; Shendrik, Alexander; Labastida, L.; Bacardit Dalmases, Anna (2012-01-11)
      Article
      Accés restringit per política de l'editorial
      This work describes the synthesis of new leather finishing acrylic resins. Four resins ware synthesized varying the concentration of ethyl acrylate, and metracrylic acid. Sodium lauryl sulphate was used as emulsifying ...