Patents by Inventor Main Chang
Main Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20120116031Abstract: A catalyst system containing (a) a solid catalyst component containing a titanium halide, a magnesium halide, a first internal electron donor compound, and a second internal electron donor compound, (b) an organoaluminum compound, and (c) an external electron donor compound is disclosed. The first internal electron donor compound contains at least one ether group and at least one ketone group. The second internal electron donor compound is a 1,8-naphthyl diester compound. Methods of polymerizing or copolymerizing alpha-olefins using the catalyst system also are disclosed.Type: ApplicationFiled: November 10, 2010Publication date: May 10, 2012Applicant: BASF CORPORATIONInventor: Main Chang
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Publication number: 20110294970Abstract: The present invention relates to solid catalyst components comprising a reaction product of a titanium compound, a magnesium compound, an alcohol, an aluminum alkoxide, a siloxane mixture, and a maleate derivative; and catalyst systems comprising the solid catalyst components and organoaluminum compounds. The present invention also relates to methods of making the solid catalyst components and the catalyst systems, and methods of polymerizing or copolymerizing ethylene using the catalyst systems.Type: ApplicationFiled: May 25, 2010Publication date: December 1, 2011Applicant: BASF CATALYSTS, LLCInventors: Main Chang, Thomas Garoff
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Publication number: 20110213106Abstract: The present invention relates to solid catalyst components comprising titanium, magnesium, halogen and an internal electron donor compound containing at least one 1,8-naphthyl diester compound. The 1,8-naphthyl diester compounds include naphthalene-1,8-diyl dicycloalkanecarboxylate derivatives, dicycloalkenecarboxylate derivatives, 8-(cycloalkanecarbonyloxy)naphthalene-1-yl benzoate derivatives, and 8-(cycloalkenecarbonyloxy)naphthalene-1-yl benzoate derivatives. The present invention further relates to catalyst systems containing the catalyst solid components, organoaluminum compounds, and organosilicon compounds. The present invention also relates to methods of making the solid catalyst components and the catalyst systems, and methods of polymerizing or copolymerizing alpha-olefins using the catalyst systems.Type: ApplicationFiled: March 1, 2010Publication date: September 1, 2011Applicant: BASF CATALYSTS LLCInventor: Main Chang
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Publication number: 20110207901Abstract: The present invention relates to catalyst systems containing solid catalyst components comprising titanium, magnesium, halogen and an internal electron donor compound having at least one ether group and at least one ketone group; organoaluminum compounds and alkyl benzoate derivatives as external electron donors. The present invention also relates to methods of making the catalyst systems, and methods of polymerizing or copolymerizing alpha-olefins using the catalyst systems.Type: ApplicationFiled: February 24, 2010Publication date: August 25, 2011Applicant: BASF Catalysts LLCInventor: Main Chang
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Patent number: 8003559Abstract: Disclosed are solid titanium catalyst components, catalyst systems containing solid titanium catalyst components, and methods of making solid titanium catalyst components. The solid titanium catalyst components contain an internal electron donor compound containing at least one ether group and at least one ketone group. The catalyst system can contain a solid titanium catalyst component, an organoaluminum compound, and an organosilicon compound. Also disclosed are methods of polymerizing or copolymerizing an alpha-olefin. The methods involve contacting an olefin with a catalyst system containing the solid titanium catalyst component.Type: GrantFiled: May 13, 2008Date of Patent: August 23, 2011Assignee: BASF CorporationInventor: Main Chang
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Patent number: 8003558Abstract: Disclosed are 1,8-naphthyl diaryloates, methods of making 1,8-naphthyl diaryloates, methods of using 1,8-naphthyl diaryloates, solid titanium catalyst components, catalyst systems containing solid titanium catalyst components, methods of making solid titanium catalyst components, and polymerization methods. The solid titanium catalyst components contain a 1,8-naphthyl diaryloate internal electron donor compound. The catalyst system can contain a solid titanium catalyst component, an organoaluminum compound, and an organosilicon compound.Type: GrantFiled: July 29, 2008Date of Patent: August 23, 2011Assignee: BASF CorporationInventor: Main Chang
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Publication number: 20110152481Abstract: The present invention relates to catalyst systems containing solid catalyst components comprising titanium, magnesium, halogen and a 1,8-naphthyl diaryloate internal electron donor compound; organoaluminum compounds and alkyl benzoate derivatives as external electron donors. The present invention also relates to methods of making the catalyst systems, and methods of polymerizing or copolymerizing alpha-olefins using the catalyst systems.Type: ApplicationFiled: December 21, 2009Publication date: June 23, 2011Applicant: BASF Catalysts LLCInventor: Main Chang
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Patent number: 7700513Abstract: Disclosed are catalyst systems and methods of making the catalyst systems for the polymerization of an olefin containing a solid titanium catalyst component containing an inorganic titanium compound, a magnesium alcohol adduct made from an inorganic magnesium compound and an alcohol, and a porous support having at least one of a certain specific surface area, a certain pore volume, and a certain median particle size. The catalyst system may further contain an organoaluminum compound and optionally an organosilicon compound. Also disclosed are methods of making polyolefins.Type: GrantFiled: May 24, 2007Date of Patent: April 20, 2010Assignee: BASF Catalysts LLCInventors: Zhidong Zhu, Main Chang
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Publication number: 20100029870Abstract: Disclosed are 1,8-naphthyl diaryloates, methods of making 1,8-naphthyl diaryloates, methods of using 1,8-naphthyl diaryloates, solid titanium catalyst components, catalyst systems containing solid titanium catalyst components, methods of making solid titanium catalyst components, and polymerization methods. The solid titanium catalyst components contain a 1,8-naphthyl diaryloate internal electron donor compound. The catalyst system can contain a solid titanium catalyst component, an organoaluminum compound, and an organosilicon compound.Type: ApplicationFiled: July 29, 2008Publication date: February 4, 2010Applicant: BASF CATALYSTS LLCInventor: Main Chang
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Publication number: 20090286672Abstract: Disclosed are solid titanium catalyst components, catalyst systems containing solid titanium catalyst components, and methods of making solid titanium catalyst components. The solid titanium catalyst components contain an internal electron donor compound containing at least one ether group and at least one ketone group. The catalyst system can contain a solid titanium catalyst component, an organoaluminum compound, and an organosilicon compound. Also disclosed are methods of polymerizing or copolymerizing an alpha-olefin. The methods involve contacting an olefin with a catalyst system containing the solid titanium catalyst component.Type: ApplicationFiled: May 13, 2008Publication date: November 19, 2009Applicant: BASF CATALYSTS LLCInventor: Main Chang
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Patent number: 7326757Abstract: Disclosed are catalyst systems and methods of making the catalyst systems for the polymerization of an olefin containing a solid titanium catalyst component containing an inorganic titanium compound, a magnesium alcohol adduct made from an inorganic magnesium compound and an alcohol, and a porous support having at least one of a certain specific surface area, a certain pore volume, and a certain median particle size. The catalyst system may further contain an organoaluminum compound and optionally an organosilicon compound. Also disclosed are methods of making polyolefins.Type: GrantFiled: July 20, 2005Date of Patent: February 5, 2008Assignee: BASF Catalysts LLCInventors: Zhidong Zhu, Main Chang
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Publication number: 20070243998Abstract: Disclosed are catalyst systems and methods of making the catalyst systems for the polymerization of an olefin containing a solid titanium catalyst component containing an inorganic titanium compound, a magnesium alcohol adduct made from an inorganic magnesium compound and an alcohol, and a porous support having at least one of a certain specific surface area, a certain pore volume, and a certain median particle size. The catalyst system may further contain an organoaluminum compound and optionally an organosilicon compound. Also disclosed are methods of making polyolefins.Type: ApplicationFiled: May 24, 2007Publication date: October 18, 2007Applicant: BASF CATALYSTS LLCInventors: Zhidong Zhu, Main Chang
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Publication number: 20070021573Abstract: Disclosed are catalyst systems and methods of making the catalyst systems for the polymerization of an olefin containing a solid titanium catalyst component containing an inorganic titanium compound, a magnesium alcohol adduct made from an inorganic magnesium compound and an alcohol, and a porous support having at least one of a certain specific surface area, a certain pore volume, and a certain median particle size. The catalyst system may further contain an organoaluminum compound and optionally an organosilicon compound. Also disclosed are methods of making polyolefins.Type: ApplicationFiled: July 20, 2005Publication date: January 25, 2007Applicant: Engelhard CorporationInventors: Zhidong Zhu, Main Chang
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Patent number: 7153803Abstract: Disclosed are catalyst systems and methods of making the catalyst systems/supports for the polymerization of polyethylene containing a solid titanium catalyst component containing a titanium compound and a support made from a magnesium compound, an alkyl silicate, and a monoester. The catalyst system may further contain an organoaluminum compound. Also disclosed are methods of making various types of polyethylene involving polymerizing ethylene in the presence of hydrogen and a catalyst system containing a support made from a magnesium compound, an alkyl silicate and a monoester.Type: GrantFiled: June 28, 2004Date of Patent: December 26, 2006Assignee: Engelhard CorporationInventors: Zhidong Zhu, Main Chang, Christopher J. Aarons
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Patent number: 7135531Abstract: Disclosed are catalyst systems and methods of making the catalyst systems/supports for the polymerization of an olefin containing a solid titanium catalyst component having a substantially spherical shape and containing an internal electron donor, a support made from a magnesium compound, an alcohol, an ether, a surfactant, and an alkyl silicate. The catalyst system may further contain an organoaluminum compound and an organosilicon compound. Also disclosed are methods of making an impact copolymer involving polymerizing an olefin to provide a polyolefin matrix and polymerizing a polyolefin rubber using a catalyst component containing a support made from a magnesium compound, an alcohol, an ether, a surfactant, and an alkyl silicate.Type: GrantFiled: April 4, 2005Date of Patent: November 14, 2006Assignee: BASF Catalysts LLCInventors: Zhidong Zhu, Main Chang
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Patent number: 7005491Abstract: A method of lowering MFR response of a high melt flow rate polymer producing metallocene catalyst is provided. The method includes contacting the metallocene catalyst with a sufficient quantity of ?,?-diene monomer such that when the catalyst composition is contacted with polymerizable reactants under suitable polymerization conditions, the resulting polymer has an MFR rate in the range of 0.1 to 19. Hydrogen and ethylene may also be present in the polymerization. Additionally a catalyst composition is provided which includes a high melt flow rate polymer producing metallocene catalyst and a sufficient quantity of ?,?-diene monomers such that when the catalyst composition is contacted with a monomer under polymerization conditions, the resulting polymer has an MFR rate in the range of 0.1 to 19.Type: GrantFiled: June 24, 2003Date of Patent: February 28, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Weiqing Weng, Eric J. Markel, Main Chang, Armenag H. Dekmezian, Palanisamy Arjunan, Olivier J. Georjon
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Publication number: 20050288460Abstract: Disclosed are catalyst systems and methods of making the catalyst systems/supports for the polymerization of polyethylene containing a solid titanium catalyst component containing a titanium compound and a support made from a magnesium compound, an alkyl silicate, and a monoester. The catalyst system may further contain an organoaluminum compound. Also disclosed are methods of making various types of polyethylene involving polymerizing ethylene in the presence of hydrogen and a catalyst system containing a support made from a magnesium compound, an alkyl silicate and a monoester.Type: ApplicationFiled: June 28, 2004Publication date: December 29, 2005Inventors: Zhidong Zhu, Main Chang, Christopher Aarons
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Patent number: 6977287Abstract: The co-polymerization reaction of one or more olefin monomers, such as propylene, with ?,?-diene units and the resulting copolymers are provided. More specifically, the copolymer may have from 90 to 99.999 weight percent of olefins and from 0.001 to 2.000 weight percent of ?,?-dienes. The copolymer may have a weight average molecular weight in the range from 50,000 to 2,000,000, a crystallization temperature in the range from 115° C. to 135° C. and a melt flow rate in the range from 0.1 dg/min to 100 dg/min. These copolymers may be employed in a wide variety of applications, the articles of which include, for example, films, fibers, such as spunbonded and meltblown fibers, fabrics, such as nonwoven fabrics, and molded articles. The copolymer may further include at least two crystalline populations. Desirably, the melting point range of one of the crystalline populations is distinguishable from the melting point range of another crystalline population by a temperature range of from 1° C. to 8° C.Type: GrantFiled: June 24, 2003Date of Patent: December 20, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Pawan Kumar Agarwal, Weiqing Weng, Aspy K. Mehta, Armenag H. Dekmezian, Main Chang, Rajan K. Chudgar, Christopher R. Davey, Chon-Yie Lin, Galen C. Richeson, Palanisamy Arjunan, Olivier Jean Georjon
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Patent number: 6962889Abstract: Disclosed are catalyst systems and methods of making the catalyst systems/supports for the polymerization of an olefin containing a solid titanium catalyst component having a substantially spherical shape and containing a titanium compound and a support made from a magnesium compound and an alkyl silicate. The catalyst system may further contain an organoaluminum compound and an organosilicon compound. Also disclosed are methods of making an impact copolymer involving polymerizing an olefin to provide a polyolefin matrix and polymerizing a polyolefin rubber using a solid titanium catalyst component containing a titanium compound and a support made from a magnesium compound and an alkyl silicate.Type: GrantFiled: January 28, 2004Date of Patent: November 8, 2005Assignee: Engelhard CorporationInventors: Zhidong Zhu, Main Chang
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Publication number: 20050176900Abstract: Disclosed are catalyst systems and methods of making the catalyst systems/supports for the polymerization of an olefin containing a solid titanium catalyst component having a substantially spherical shape and containing an internal electron donor, a support made from a magnesium compound, an alcohol, an ether, a surfactant, and an alkyl silicate. The catalyst system may further contain an organoaluminum compound and an organosilicon compound. Also disclosed are methods of making an impact copolymer involving polymerizing an olefin to provide a polyolefin matrix and polymerizing a polyolefin rubber using a catalyst component containing a support made from a magnesium compound, an alcohol, an ether, a surfactant, and an alkyl silicate.Type: ApplicationFiled: April 4, 2005Publication date: August 11, 2005Inventors: Zhidong Zhu, Main Chang