41
Kenneth B Wagener: Biocompatible copolymers. Akzona Incorporated, Francis W Young, Jack H Hall, September 21, 1982: US04350806 (17 worldwide citation)

Segmented copolyesters/copolyethers in which the soft segment polyethers incorporate a thermally stable heterocyclic unit, e.g., hydantoin, are found to be useful as biomedical materials since the heterocyclic ring prevents crystallization of the soft segment, and further provides a chemically react ...


42
Hermann A Zinnen: Zeolitic para-xylene separation with tetralin derivatives as heavy desorbent. UOP, Thomas K McBride, John F Spears Jr, Jack H Hall, October 15, 1991: US05057643 (17 worldwide citation)

A chromatographic process able to separate para-xylene frpm C.sub.8 isomers and C.sub.9 aromatics. In the process, the para-xylene-containing feed mixture is contacted with an X or Y zeolite adsorbent having Group IA or IIA cations, e.g., barium and/or potassium, at exchangeable cationic sites. The ...


43
Santi Kulprathipanja: Process for separating glucose and mannose with CA/NH4 - exchanged ion exchange resins. UOP, Thomas K McBride, John F Spears Jr, Jack H Hall, June 6, 1989: US04837315 (17 worldwide citation)

Mannose is separated from mixtures with glucose and other saccharides by adsorption of sulfonated polystyrene divinylbenzene crosslinked ion exchange resins, and desorbing the adsorbate with water. Glucose is removed from the adsorption process in the raffinate.


44
Richard W Neuzil, George J Antos: Separation of para-xylene. UOP, Thomas K McBride, John F Spears Jr, Jack H Hall, December 12, 1989: US04886929 (16 worldwide citation)

The separation of the para-isomer of a dialkyl benzene from a mixture of the isomers thereof, especially p-xylene, by contacting the mixture at adsorption conditions with a type X or type Y zeolite adsorbent, ion exchanged with barium and potassium, and recovering the para-alkylbenzene from the adso ...


45
Jochen Kowallik, Alexander Brandner: Linear polyesters containing phosphonate heat stabilizers. Akzona Incorporated, Francis W Young, Jack H Hall, March 3, 1981: US04254018 (16 worldwide citation)

Polyesters containing a freely or chemically incorporated heat stabilizing agent which is a phosphonate of the chemical formula: ##STR1## in which R.sub.1 and R.sub.2 may be identical or different and describe an alkyl radical with 1 to 4 carbon atoms, and in which X represents ##STR2## in amounts r ...


46
Hermann A Zinnen, Richard L Fergin: Rejective separation of para-xylene from xylene isomers and ethylbenzene with zeolites. UOP, Thomas K McBride, John F Spears Jr, Jack H Hall, July 10, 1990: US04940830 (16 worldwide citation)

A process for the separation of the para-isomer from a hydrocarbon feed mixture comprising at least two bi-alkyl substituted monocyclic aromatic isomers, including the para-isomer, said isomers having from 8 to about 18 carbon atoms per molecule which process employs an adsorbent comprising a sodium ...


47
Santi Kulprtahipanja: Process for the adsorptive separation of hydroxy paraffinic dicarboxylic acids from olefinic dicarboxylic acids. UOP, Thomas K McBride, John F Spears Jr, Jack H Hall, February 20, 1990: US04902829 (15 worldwide citation)

A process for the separation of one or more hydroxy paraffinic dicarboxylic acids from a feed mixture comprising said acid(s), and one or more olefinic dicarboxylic acids which process employs an adsorbent comprising a non-zeolitic, hydrophobic, crystalline silica molecular sieve material, to select ...


48
Ronald W Worley, David A Johnson: Method for the prevention of hydrolysis of polyesterification catalysts. Akzona Incorporated, Francis W Young, Jack H Hall, February 21, 1984: US04433135 (15 worldwide citation)

The use of aluminum sulfate as a dessicant for drying the starting materials used in polymerization reactions employing readily hydrolyzable catalysts is disclosed. The aluminum sulfate is allowed to remain in the reaction mixture during polymerization, and, indeed, may advantageously be allowed to ...


49
Hermann A Zinnen: Chromatographic separation process for recovering individual diethyltoluene isomers. UOP, Thomas K McBride, John F Spears Jr, Jack H Hall, July 10, 1990: US04940548 (14 worldwide citation)

A process for separating 3,5-diethyltoluene (3,5-DET) and/or 2,6-diethyltoluene (2,6-DET) from a feed mixture comprising at least one isomer from the group 3,5- and 2,6-diethyltoluene and at least one other isomer thereof, which process comprises contacting the mixture at adsorption conditions with ...


50
Hermann A Zinnen: Zeolitic para-xylene separation with diethyltoluene heavy desorbent. UOP, Thomas K McBride, John F Spears Jr, Jack H Hall, September 5, 1989: US04864069 (14 worldwide citation)

A chromatographic process able to separate para-xylene from C.sub.8 isomers and C.sub.9 aromatics. In the process, the para-xylene-containing feed mixture is contacted with an X or Y zeolite adsorbent having Group IA or IIA cations, e.g., barium and/or potassium at exchangeable cationic sites. The p ...