Finely divided carbon black modified unmasticated polymers of vinyl monomers
Abstract
Abstract FINELY DIVIDED PARTICLES OF UNMASTICATED VINYL RESINS HAVING CARBON BLACK DISPERSED IN THE PARTICLES THEREOF AND SUITABLE FOR FLUID BED COATINGS, FLAME SPRAY COATING, PREPARATION OF RIGID EXTRUSIONS, AND DIRECT PRESSING INTO MOLDED ARTICLES, SUCH AS PHONOGRAPH RECORDS, ARE PRODUCED BY SUITABLY INCORPORATING A FINE AQUEOUS DISPERSION OF CARBON BLACK INTO A SUSPENSION OF VINYL MONOMER, THE CARBON BLACK DISPERSING AGENT AND THE SUSPENDING AGENT BEING PAIRED TOGETHER SO THAT WHEN NEGATIVELY CHARGED SUSPENSIONS ARE USED, THE CARBON BLACK DISPERSING AGENT IS NONIONIC, AMPHOTERIC OR CATIONIC, AND WHEN POSITIVELY CHARGED SUSPENSIONS ARE USED, THE CARBON BLACK DISPERSING AGENT IS ANIONIC OR AMPHOTERIC.
Inventors
- 👤 T Nemeth
Bibliographic Details
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