Method for determining compounding process variables

Details Method for determining compounding process variables Method for determining compounding process variables

1982-05-03

1984-05-15

Lee, Lester L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

436 85, 524114, 524140, 524141, 524143, 524537, 524575, 524577, 524578, 524579, 524582, 524585, 524600, 524611, 524707, 524710, 524752, 526 59, 526 60, 526 61, 526 88, 528125, 528126, 528128, 528172, 528179, 528180, 528181, 528182, 528185, C08L 2502, C08L 2504, C08L 2506, C08L 2508

Patent

active

044489099

ABSTRACT:
A method for determining the concentration of additives in a compounding process by measuring the capacitance and dissipation factor (tan.delta.) of the mixture and converting such values to the concentrations of the additives. This method may also be utilized to determine the concentration of the polymers in the mixture. This method is preferably applied to a compounding process of blending polyphenylene oxide and polystyrene thermoplastic resins and is preferably applied to a continuous compounding process of these resins to determine therein the concentration of an aryl phosphate ester flame retardant.

REFERENCES:
patent: 3846073 (1974-11-01), Baum et al.

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