Pelletization of metal soap powders
AssigneeCiba Specialty Chemicals Corporation
InventorDaniel F. Scully, Jr.
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Abstract
A metal soap pellet is made by compressing or heating and cooling a mixture of (a) a metal soap (such as a metal stearate) and (b) a plurality of components (such as (i) a metal oxide, hydroxide, or carbonate and (ii) a monocarboxylic acid) which are capable of reacting together under heat and/or pressure to form a metal soap. The metal soap pellets of the invention are non-dusting and durable. They are excellent plastics additives and are particularly useful for applications where the presence of a separate binder is unacceptable.
Claims28
A metal soap pellet comprising (a) a metal soap and (b) a binder comprising a plurality of components which are capable of reacting together under heat and/or pressure to form a metal soap.
A metal soap pellet comprising
- (a) zinc stearate and
- (b) a binder comprising
- (i) zinc carbonate and/or zinc oxide, and
- (ii) commercial stearic acid.
A method of pelletizing a metal soap comprising
- (a) mixing
- (i) a metal soap with
- (ii) a binder comprising a plurality of components which are capable of reacting together under heat and/or pressure to form a metal soap;
- and
- (b) forming the mixture into pellets.
Dependencies are inferred from the claim text.