Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-07-11
2006-07-11
Solola, Taofiq (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
07074944
ABSTRACT:
In a process for the single-stage preparation of polytetrahydrofuran and/or tetrahydrofuran copolymers having a mean molecular weight of from 650 to 5000 dalton by polymerization of tetrahydrofuran over an acid catalyst in the presence of at least one telogen and/or comonomer, the telogen and/or comonomer is added at at least two addition points in different segments of the polymerization apparatus.
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patent: 5886138 (1999-03-01), Mueller
patent: 6362312 (2002-03-01), Eller et al.
patent: 99/36459 (1999-07-01), None
Tanabe et al,Studies in Surface Sci. and Catalysis, vol. 51, 108-128, 1989.
Tanabe et al.Studes in Surface Sci. and Catalysis vol. 51, 199-210, 1989.
Domschke Thomas
Gerstlauer Achim
Haubner Martin
Käshammer Stefan
Sigwart Christoph
BASF - Aktiengesellschaft
Novak Druce & Quigg LLP
Solola Taofiq
Voight Jason D.
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