PROCESSO PARA MODIFICAR AS CARACTERISTICAS DE SUPERFICIE DE UM NEGRO DE FUMO DE FORNO

• Main Author: JASPARD HARVEY ATKINS
• Format: Patent
• Language: Portuguese
• Published: 29.12.1987
• Edition: 4
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOUNDS THEREOF; DYES; INORGANIC CHEMISTRY; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-METALLIC ELEMENTS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; PREPARATION OF CARBON BLACK; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The surface characteristics of a furnace carbon black having a nitrogen surface area greater than 140 m2/g, are modified by treating the black with an organic adsorbate (eg. an n-alkane, n-alkane amine, n-alkane halide or n-alkane alcohol) having a molecular structure including a linear chain having at least four carbon atoms at a loading ranging from 1 to 2 percent by weight, whereby carbon black pores can be filled to effectively block adverse moisture absorption.