Method of Polyarylene Sulfide Precipitation
AssigneeTicona LLC
InventorHendrich A. Chiong
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Abstract
A method for forming a polyarylene sulfide is described. The method can include a multi-step cooling and precipitation process in which the cooling rate of the solution that carries the polymer is decreased during a portion of the overall cooling. This slower cooling period can encompass at least a portion of the period during which the polymer precipitates from the solution. The precipitation process can form polyarylene sulfide particles with good particle integrity and a narrow particle size distribution, which can reduce fines and improve downstream processing and final product characteristics.
Claims15
1-38. (canceled)
Precipitated polyphenylene sulfide particles having a bulk density of greater than 0.5 grams per cubic centimeter to about 1.5 grams per cubic centimeter and a d50 particle size of from about 800 micrometers to about 2,000 micrometers.
A thermoplastic composition a polymer component formed from a plurality of precipitated polyphenylene sulfide particles having a bulk density of greater than 0.5 grams per cubic centimeter to about 1.5 grams per cubic centimeter and a d50 particle size of from about 800 micrometers to about 2,000 micrometers.
Dependencies are inferred from the claim text.