1.1 This standard prescribes the requirements, methods of sampling and test for casein based aqueous pigment finishes and casein based binders with or without dispersed pigments for leather.
1.2 This standard does not cover the so called dispersed pigments or concentrated pigment colours which do not contain any casein binder and which are generally meant for use with synthetic resin emulsions or other commercially known synthetic resin binders used in the leather industry.
IS 3999-1967 history
1967IS 3999-1967 Specification for casein-based water-based pigments and finishes