Dae Y Park

US Patent:

20190345078, Nov 14, 2019

Filed:

Sep 29, 2017

Appl. No.:

16/337600

Inventors:

Omar A. Abdelrahman - Minneapolis MN, US
Charles S. Spanjers - Minneapolis MN, US
Dae Sung Park - Minneapolis MN, US
Michael Tsapatsis - Edina MN, US
Limin Ren - Minneapolis MN, US
Paul J. Dauenhauer - Shoreview MN, US

International Classification:

C07C 1/24
C07C 51/42

Abstract:

Forming a diene includes contacting a reactant including at least one of a cyclic ether and a diol with a heterogeneous acid catalyst to yield a reaction mixture including a diene. The heterogeneous acid catalyst includes at least one of a Lewis acid catalyst, a supported Lewis-acid catalyst, a Brnsted acid catalyst, a solid acid catalyst, a supported phosphoric acid catalyst, and a sulfonated catalyst. The dehydration of cyclic ethers and diols with high selectivity to yield dienes completes pathways for the production of dienes, such as isoprene and butadiene, from biomass in high yields, thereby promoting economical production of dienes from renewable resources.

US Patent:

20180327375, Nov 15, 2018

Filed:

Nov 7, 2016

Appl. No.:

15/773991

Inventors:

Christoph KRUMM - Minneapolis MN, US
Kristeen JOSEPH - Minneapolis MN, US
Dae Sung PARK - Minneapolis MN, US
Paul J. DAUENHAUER - Minneapolis MN, US
Mahesh MAHANTHAPPA - Minneapolis MN, US
- Minneapolis MN, US

International Classification:

C07D 307/46
C07D 307/42
C07D 307/20
C07D 207/333
C07D 207/337
C07D 213/30
C07D 213/50
C07D 333/16
C07D 333/32

Abstract:

Disclosed are compounds of the Formula 1 wherein A is an aromatic moiety; H is a hydrophobic group comprising a main alkyl chain having from about 3 to about 26 carbon atoms and comprising a Cor greater alkyl chain branched from the main alkyl chain; and K is a hydrophilic group.

US Patent:

20180327376, Nov 15, 2018

Filed:

Nov 7, 2016

Appl. No.:

15/773992

Inventors:

Dae Sung PARK - Minneapolis MN, US
Christoph KRUMM - Minneapolis MN, US
Maura KOEHLE - Leland NC, US
Kristeen JOSEPH - Minneapolis MN, US
Dionisos G. VLACHOS - Voorhees NJ, US
Raul F. LOBO - Newark DE, US
Paul J. DAUENHAUER - Minneapolis MN, US
- MINNEAPOLIS MN, US

International Classification:

C07D 307/46
C07D 307/36
C07D 307/58

Abstract:

Methods that include acylating an aromatic containing compound by reacting the aromatic containing compound with an anhydride containing compound to form an acylated aromatic containing compound.