Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Organic polymerization
Reexamination Certificate
2011-08-16
2011-08-16
Boykin, Terressa M (Department: 1765)
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Organic polymerization
C528S196000, C528S198000, C528S271000, C528S272000
Reexamination Certificate
active
07998420
ABSTRACT:
The invention relates to a method and a device for producing vacuum in the production of polyesters and copolyesters; unrectified vapors from at least one esterification or transesterification stage is preferably used as a driving medium in gas jet pumps for producing the vacuum in one or more polycondensation stages.
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Kriesche Gerald
Reisen Michael
Boykin Terressa M
Lurgi Zimmer GmbH
Roberts & Roberts, LLP
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