Process of total use of tanned Leather shavings and chips of finished leather shavings by Alkaline hydrolysis at room temperature for production of White Water Based PaintAnd color and hydrolyzed Collagen

摘要

Introduces the treatment process of the tanned Leather shavings or Blue Leather and finished leather or leather Dyeing Industries generated in TanneriesAlkaline hydrolysis with Concentrated Sodium hydroxide solution at room temperature, avoiding energy consumption for heating is not required for the production of water-based Paint,Replacing the entire Polyvinyl Acetate, PVA, used as Bonding Agent in the formulation of Paints, Vinyl type, being the main component of the painting.For chips of Leather and Leather Dyeing containing hydrolysed Collagen that gives characteristics of adhesion.The chips are then hydrolyzed, the other components of the paint Pigment corresponding to previously dispersed in water, cargo material is Calcium Carbonate,Kaolin or TALC, Preservative, essence to confer Odour and other Additives to give specific characteristics to be obtained in the painting produced.After Alkaline hydrolysis at room temperature of the leather tanned shavings with Sodium hydroxide solution, obtained the complete dissolution of the shavings andAfter pH adjustment, Rushes the content of Chromium (iii),Hydrolyzed Collagen is obtained; then the final adaptation of hydrolyzed Collagen: Adding bactericide; to ensure that the hydrolyzed Collagen do not contain Chromium VIAny possible residual is reduced to Chromium (iii) by the addition of Ascorbic Acid or Vitamin C; adjusts pH between 3 and 4 by adding Sulphuric Acid or concentrated acetic and additional builtErvante.Chromium hydroxide precipitate as Chromium (iii) in the production process of hydrolyzed Collagen can be used as Pigment in the process raised the production of water-based Paint,With all the waste of Leather shavings.