1
Steven A Schwartz, Frank J Liotta Jr, Edward A Barsa: Preparation of gypsum compositions. Lyondell Chemical Technology, Shao Hua Guo, July 4, 2006: US07070648 (17 worldwide citation)

A gypsum composition containing a sulfonate-containing comb-branched copolymer is disclosed. The sulfonate-containing comb-branched copolymer comprises recurring units of a polyether macromonomer, an acrylic monomer, and a sulfonate monomer. The sulfonate-containing comb-branched copolymer not only ...


2
Steven A Schwartz, Sallie J Lee, Frank J Liotta Jr, Robert M Arrell: Gypsum composition. Lyondell Chemical Technology, Shao Hua Guo, August 28, 2007: US07261772 (14 worldwide citation)

A gypsum composition comprising water, stucco, clay, an amine compound, a polyoxyalkylene, and a comb-branched copolymer is disclosed. The gypsum composition has improved fluidity. A method for preparing the gypsum composition is also disclosed. The method comprises mixing the components to form a s ...


3
Bi Le Khac, Wei Wang, Edward T Shawl: Process for preparing comb-branched polymers. Arco Chemical Technology, Shao Hua Guo, November 9, 2004: US06815513 (14 worldwide citation)

A continuous process for making a comb-branched copolymer of an acrylic monomer and a polyether macromonomer is disclosed. The process is performed by continuously feeding a reaction zone with a monomer stream that contains an acrylic acid and a polyether macromonomer, and an initiator stream. The c ...


4
Shahram Mihan: Polyethylene and catalyst composition for its preparation. Basell Polyolefine, Shao Hua Guo, August 3, 2010: US07767613 (10 worldwide citation)

Polyethylene which comprises ethylene homopolymers and copolymers of ethylene with α-olefins and has a molar mass distribution width Mw/Mn of from 6 to 100, a density of from 0.89 to 0.97 g/cm3, a weight average molar mass Mw of from 5000 g/mol to 700,000 g/mol and has from 0.01 to 20 branches/1000 ...


5
Noel C Hallinan, Brian A Salisbury: Removing hydrocarbon impurities from acetic acid by ionic liquid extraction. Lyondell Chemical Technology, Shao Hua Guo, October 12, 2010: US07812191 (9 worldwide citation)

A method for removing hydrocarbon impurities from acetic acid is disclosed. The method comprises extracting acetic acid with a hydrophilic imidazolium salt. The imidazolium salt preferably has the general structure of wherein XΘ is a counter ion and R1, R2, R3, R4, and R5 are independently selected ...


6
Steven A Schwartz, Sallie J Lee, Frank J Liotta Jr, Robert M Arrell: Gypsum composition. Lyondell Chemical Technology, Shao Hua Guo, July 1, 2008: US07393424 (9 worldwide citation)

A gypsum composition comprising water, stucco, clay, an amine compound, a polyoxyalkylene, and a comb-branched copolymer is disclosed. The gypsum composition has improved fluidity. A method for preparing the gypsum composition is also disclosed. The method comprises mixing the components to form a s ...


7
Jia Chu Liu: Olefin polymerization with pyridine moiety-containing singe-site catalysts. Equistar Chemicals, Shao Hua Guo, July 27, 2004: US06767975 (9 worldwide citation)

An olefin polymerization process is disclosed. The polymerization is performed in the presence of a clay, an activator, and a transition metal complex that has at least one pyridine moiety-containing ligand. The presence of clay increases the catalyst activity. The process is suitable for making ult ...


8
Mark K Reinking, Douglas D Klendworth: Method for preparing propylene polymers having broad molecular weight distribution. Equistar Chemicals, Shao Hua Guo, October 5, 2004: US06800703 (9 worldwide citation)

A method for producing propylene polymers having a broad molecular weight distribution (MWD) is disclosed. The method uses a Ziegler catalyst and one silane donor. The silane donor is selected from vinyltrimethoxysilane or dicyclohexyldimethoxysilane. The polymers made by the method have an MWD grea ...


9
Wei Wang, Shao Hua Guo: Removing permanganate-reducing impurities from acetic acid. Lyondell Chemical Technology, Shao Hua Guo, April 24, 2007: US07208625 (8 worldwide citation)

A method for removing permanganate-reducing impurities from an acetic acid product is disclosed. The method comprises contacting an acetic acid product containing permanganate-reducing impurities with peracetic acid and an oxygen-containing gas. The method is particularly suitable for post treatment ...


10
Shaotian Wang: Multi-catalyst system for olefin polymerization. Equistar Chemicals, Shao Hua Guo, March 1, 2005: US06861485 (8 worldwide citation)

A multi-catalyst system is disclosed. The catalyst system comprises catalyst A and catalyst B. Catalyst A comprises a supported bridged indenoindolyl transition metal complex. Catalyst B comprises a supported non-bridged indenoindolyl transition metal complex. The catalyst system of the invention pr ...