Method for adding raw materials during the production of polyesters or copolyesters
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United States of America Patent
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Issued Date -
Aug 24, 2006
app pub date -
Jan 13, 2004
filing date -
Jan 23, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a method for the manufacture of polyester or copolyester without the application of a weighing machine for dosing the solid principal raw material, dicarboxylic acid, and an appropriate concept for the closed-loop control of the molar ratio of the paste prepared from the starting materials without the direct measurement of the mass flow of the solid principal raw material, dicarboxylic acid, by weighing. In addition, an indirect method for the determination of the raw material consumption without direct weighing of the solid raw material is suggested.
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