PROCESS TO PREPARE ADDITIVE PACKAGES FOR USE IN PVC COMPOUNDING

A process for preparing a one-pack additive package for use in PVC compounding includes the steps of absorbing liquid additives, if any, into a nucleus; blending the nucleus with solid lubricant(s); then blending optional solid additives and optional drying agents therewith to obtain a free-flowing,...

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Bibliographic Details
Main Authors LELLIS TADEU, CHO JIAN-YANG, DE LIMA PEDRO M
Format Patent
LanguageEnglish
Published 03.01.2013
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:A process for preparing a one-pack additive package for use in PVC compounding includes the steps of absorbing liquid additives, if any, into a nucleus; blending the nucleus with solid lubricant(s); then blending optional solid additives and optional drying agents therewith to obtain a free-flowing, dry blend, particulate one-pack. The resulting layered dry blend composition may then be pelletized, if desired. Because liquids are absorbed into the nucleus and then the temperature is maintained, during and after the lubricant blending step, at least 5° C. below the melt temperature of the lowest melting lubricant wax, no free liquids are present and potential interactions between additives are avoided.
Bibliography:Application Number: US201213534671