Use of aluminium alkoxide and oxazolidine II to treat acid-deteriorated historic leather

Anne Lama, A Paula M Antunes, Anthony D Covington, Jeffry Guthrie-Strachan, Yvette Fletcher

Research output: Contribution to JournalArticlepeer-review


This study was undertaken to develop a product that will potentially delay the progress of deterioration of acid-deteriorated historic leather. Acid-deteriorated leather samples were treated with a new formulation consisting of aluminium di(isopropoxide) acetoacetate ester chelate (aluminium alkoxide) and 5-ethyl-1-aza-3,7-dioxabicyclo[3.3.0]octane (oxazolidine II). The leather samples were also treated with oxazolidine II and aluminium alkoxide separately to compare the effectiveness of these reagents against the new formulation. Untreated leather samples were used as a negative control. Acid-deteriorated leather samples treated with Cellugel®, aluminium alkoxide and the new formulation along with corresponding untreated leather samples were also subjected to accelerated ageing in order to investigate the longevity of the treated leather. The impact of the treatments and accelerated ageing was determined by measuring the hydrothermal stability of the leather and pH of the aqueous extract. The formulation showed a potential to provide the acid-deteriorated historic leather with long-term protection against an artificially-created acidic environment.
Original languageEnglish
Pages (from-to)172-187
Number of pages16
JournalJournal of the Institute of Conservation
Issue number2
Early online date21 Sept 2015
Publication statusE-pub ahead of print - 21 Sept 2015


  • Leather
  • conservation
  • acid deterioration
  • red rot
  • artificial ageing
  • shrinkage temperature


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