Patents by Inventor Muthiah N. Inbasekaran
Muthiah N. Inbasekaran 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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Patent number: 6051294Abstract: Hydroxy-functional polyethers having a "cardo" diphenylene group in their backbones are prepared by contacting at least one dinucleophilic monomer with at least one dtglycidyl ether of a cardo bisphenol, such as bis(hydroxyphenyl)fluorene, phenolphthalein, or phenolphthalimidine or a substituted cardo bisphenol, such as a substituted bis(hydroxyphenyl)fluorene, a substituted phenolphthalein or a substituted phenolphthalimidine, under conditions sufficient to cause the nucleophillo moieties of the dinucleophilic monomer to react with epoxy moieties to form a polymer backbone containing pendant hydroxy moieties and ether, imino, amino, sulfonamido or ester linkages. These polyethers possess a combination of high barrier to oxygen transmission (i.e., oxygen transmission rate less than 10.0 cm.sup.3 -mil/100 in.sup.2 -atm-day to oxygen) and high heat resistance (i.e., Tg above 120.degree. C.).Type: GrantFiled: February 9, 1998Date of Patent: April 18, 2000Assignee: The Dow Chemical CompanyInventors: Jerry E. White, H. Craig Silvis, Stephen E. Bales, Michael N. Mang, Muthiah N. Inbasekaran
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Patent number: 5814373Abstract: Hydroxy-functional polyethers having a "cardo" diphenylene group in their backbones are prepared by contacting at least one dinucleophilic monomer with at least one diglycidyl ether of a cardo bisphenol, such as bis(hydroxyphenyl)fluorene, phenolphthalein, or phenolphthalimidine or a substituted cardo bisphenol, such as a substituted bis(hydroxyphenyl)fluorene, a substituted phenolphthalein or a substituted phenolphthalimidine, under conditions sufficient to cause the nucleophilic moieties of the dinucleophilic monomer to react with epoxy moieties to form a polymer backbone containing pendant hydroxy moieties and ether, imino, amino, sulfonamido or ester linkages. These polyethers possess a combination of high barrier to oxygen transmission (i.e., oxygen transmission rate less than 10.0 cm.sup.3 -mil/100 in.sup.2 -atm-day to oxygen) and high heat resistance (i.e., Tg above 120.degree. C.).Type: GrantFiled: October 1, 1993Date of Patent: September 29, 1998Assignee: Dow Chemical CompanyInventors: Jerry E. White, H. Craig Silvis, Stephen E. Bales, Michael N. Mang, Muthiah N. Inbasekaran
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Patent number: 5489425Abstract: A group of functionalized polyamine chelants that form complexes with rhodium are disclosed. The rhodium complexes can be attached to an antibody or antibody fragment and used for therapeutic or diagnostic purposes.Type: GrantFiled: March 15, 1993Date of Patent: February 6, 1996Assignee: The Dow Chemical CompanyInventors: William J. Kruper, Jr., Douglas K. Pollock, William A. Fordyce, Machael J. Fazio, Muthiah N. Inbasekaran, Ramaiah Muthyala
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Patent number: 5470987Abstract: Monomeric bisimides corresponding to the formula: ##STR1## wherein R is independently in each occurrence hydrogen, alkyl of from 1 to 20 carbons, aralkyl of from 1 to 20 carbons, halogen, or NO.sub.2 ; X' is F, Cl, OH, or NO.sub.2. These bisimides are useful in the production of various thermoplastic, polymeric materials such as polyetherimides, polyesterimides, and poly(carbonate imides).Type: GrantFiled: September 29, 1994Date of Patent: November 28, 1995Assignee: The Dow Chemical CompanyInventor: Muthiah N. Inbasekaran
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Patent number: 5466397Abstract: Disclosed are compounds containing substituted pyrazoline which exhibit nonlinear optical activity on orientation and to oriented polymeric compositions comprising moieties derived therefrom in the backbone of the polymer. Also disclosed are the processes for making the oriented polymeric composition of the invention.Type: GrantFiled: November 29, 1993Date of Patent: November 14, 1995Assignee: The Dow Chemical CompanyInventors: Stephen E. Bales, David J. Brennan, Robert J. Gulotty, Jr., Muthiah N. Inbasekaran, Michael N. Mang, Mark D. Newsham
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Patent number: 5447960Abstract: A plant fungicide method comprises applying to the locus of a plant pathogen a fungicidally effective amount of a compound of formula (I) ##STR1## or a salt or a complex thereof, wherein: R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, and R.sup.8 are independently H, halo, NO.sub.2, (C.sub.1 -C.sub.4) alkyl, or halo(C.sub.1 -C.sub.4) alkyl;R.sup.3', R.sup.4', R.sup.5', R.sup.3", R.sup.4", and R.sup.5" are independently H, halo, OH, or CH.sub.3, provided that at least one is OH;R.sup.6 ' and R.sup.6 " are independently H or OH.Type: GrantFiled: October 4, 1993Date of Patent: September 5, 1995Assignee: DowElancoInventors: Deirdre M. Sinnott, Hak-Fun Chow, Robert J. Ehr, Steven D. Lubetkin, Stephen E. Bales, Muthiah N. Inbasekaran
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Patent number: 5445854Abstract: The present invention discloses oriented optical epoxy compositions comprising a reaction product of arylhydrazones with a monomer copolymerizable therewith and to oriented crosslinked polymeric composition comprising the reaction product of an epoxy arylhydrazone or the epoxy composition of the invention with a curing agent. The present invention also discloses processes for making the said compositions.Type: GrantFiled: November 29, 1993Date of Patent: August 29, 1995Assignee: The Dow Chemical CompanyInventors: Mark D. Newsham, Muthiah N. Inbasekaran, Michael N. Mang
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Patent number: 5386002Abstract: Polyetherimides, polyesterimides, poly(ester etherimides) and poly(carbonate imides) which are thermoplastic, polymeric materials contain divalent bisimides of formula ##STR1## wherein R is independently in each occurrence hydrogen, alkyl of from 1 to 20 carbons, aryl or aralkyl of from 1 to 20 carbons, halogen or NO.sub.2. Novel monomeric bisimides corresponding to the above formula are also disclosed.Type: GrantFiled: December 3, 1993Date of Patent: January 31, 1995Assignee: The Dow Chemical CompanyInventors: Muthiah N. Inbasekaran, Daniel J. Murray, Michael N. Mang, James L. Brewbaker
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Patent number: 5304688Abstract: A process for the preparation of bishydroxy aromatic compounds, such as 9,9-bis(4-hydroxyphenyl)fluorene, involving contacting a ketone, such as fluorenone, with phenol or substituted phenol in the presence of a mercaptan cocatalyst and a solid superacid catalyst of Hammett acid strength H.sub.0 greater than about -13.0. Solid superacid catalysts include the sulfates, sulfated oxides, sulfated oxyhydroxides, and sulfated oxysilicates of aluminum, tin, and the Group IVA metals, such as zirconium, as well as mixed metal oxides, such as tungsten-zirconium oxides. Isolated yields are high for 9,9-bis(4-hydroxyphenyl)fluorene.Type: GrantFiled: April 13, 1993Date of Patent: April 19, 1994Assignee: The Dow Chemical CompanyInventors: Robert G. Bowman, Muthiah N. Inbasekaran
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Patent number: 5288816Abstract: The present invention relates to nonlinear optical materials comprising aminoaryl hydrazones and to nonlinear optical polymeric compositions containing recurring covalently bonded moieties derived from the aminoaryl hydrazones of the invention. The polymeric compositions of the present invention have high glass transition temperatures and exhibit stable nonlinear optical activity at high temperatures over a period of time.Type: GrantFiled: August 10, 1992Date of Patent: February 22, 1994Assignee: The Dow Chemical CompanyInventors: Muthiah N. Inbasekaran, Mark D. Newsham, Michael N. Mang
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Patent number: 5219477Abstract: A cyclophosphazene fluid composition containing organometallic or inorganic metal salts as antioxidants the antioxidants for use therein, and a method therefor, are disclosed herein. Suitable organometallic salts are formed by reacting a metal hydroxide with benzoic acid, substituted benzoic acids, or substituted phenols. The preferred inorganic metal salts effective for this purpose include various metal borates. The metal salt antioxidants are effective for reducing oxidation in the cyclophosphazene fluid in amounts of less than about 1% by weight of the overall composition.Type: GrantFiled: April 15, 1991Date of Patent: June 15, 1993Assignee: The Dow Chemical CompanyInventors: Bassam S. Nader, Muthiah N. Inbasekaran
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Patent number: 5216110Abstract: Azole rings, such as oxazole and thiazole rings, can activate an aromatic ring bonded to a leaving group such as a halogen atom so that the aromatic ring will undergo aromatic nucleophilic substitution. The reaction is useful for making ethers, thioethers and amines containing azole rings. In particular, monomers having azole rings, activated aromatic rings with leaving groups and nucleophilic moieties can react under conditions of aromatic nucleophilic displacement to form non-rigid rod PBZ polymers. The non-rigid rod PBZ polymers can be used to form molecular composites with rigid rod PBZ polymers which molecular composites are not substantially phase separated.Type: GrantFiled: January 10, 1992Date of Patent: June 1, 1993Assignee: The Dow Chemical CompanyInventors: Muthiah N. Inbasekaran, Michael J. Mullins
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Patent number: 5208299Abstract: The present invention relates to nonlinear optical material comprising nonlinear optical dihydroxy arylhydrazones and to nonlinear optical materials comprising compositions containing at least one divalent moiety of nonlinear optical arylhydrazones. The present invention also relates to polyesters, polyestercarbonates, polycarbonates, polyethers, and poly(hydroxy ether) polymers, incorporating the dihydroxy arylhydrazone as recurring divalent moieties in the backbone of the polymer. The polymeric compositions of the present invention have high glass transition temperatures and exhibit stable nonlinear optical activity at high temperatures over a period of time.Type: GrantFiled: April 10, 1992Date of Patent: May 4, 1993Assignee: The Dow Chemical CompanyInventors: Stephen E. Bales, David J. Brennan, Robert J. Gulotty, Anthony P. Haag, Muthiah N. Inbasekaran
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Patent number: 5194562Abstract: Azole rings, such as oxazole and thiazole rings, can activate an aromatic ring bonded to a leaving group such as a halogen atom so that the aromatic ring will undergo aromatic nucleophilic substitution. The reaction is useful for making ethers, thioethers and amines containing azole rings. In particular, monomers having azole rings, activated aromatic rings with leaving groups and nucleophilic moieties can react under conditions of aromatic nucleophilic displacement to form non-rigid rob PBZ polymers. The non-rigid rod PBZ polymers can be used to form molecular composites with rigid rod PBZ polymers which molecular composites are not substantially phase separated.Type: GrantFiled: January 10, 1992Date of Patent: March 16, 1993Assignee: The Dow Chemical CompanyInventors: Muthiah N. Inbasekaran, Michael J. Mullins
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Patent number: 5104960Abstract: Azole rings, such as oxazole and thiazole rings, can activate an aromatic ring bonded to a leaving group such as a halogen atom so that the aromatic ring will undergo aromatic nucleophilic substitution. The reaction is useful for making ethers, thioethers and amines containing azole rings. In particular, monomers having azole rings, activated aromatic rings with leaving groups and nucleophilic moieties can react under conditions of aromatic nucleophilic displacement to form non-rigid rod PBZ polymers. The non-rigid rod PBZ polymers can be used to form molecular composites with rigid rod PBZ polymers which molecular composites are not substantially phase separated.Type: GrantFiled: February 22, 1989Date of Patent: April 14, 1992Assignee: The Dow Chemical CompanyInventors: Muthiah N. Inbasekaran, Michael J. Mullins
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Patent number: 5104559Abstract: A lubricating compound having the structure:R.sup.1 --R.sub.f --O--Ar--R.sup.2wherein R.sup.1 is a monovalent radical selected from the group consisting of fluoride, unsubstituted aryloxys, substituted aryloxys, unsubstituted arylthios, substituted arylthios, perfluoroalkoxys, and perfluoro (3,6-dimethyl-1, 4-dioxanyl-2-oxy), R.sup.Type: GrantFiled: November 26, 1990Date of Patent: April 14, 1992Assignee: The Dow Chemical CompanyInventors: Chester E. Pawloski, Muthiah N. Inbasekaran
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Patent number: 5032301Abstract: Triazines substituted with at least one aryloxy perfluoroisopropyl moiety are disclosed. These compounds, either alone or as additives, are useful as high temperature lubricants.Type: GrantFiled: April 6, 1990Date of Patent: July 16, 1991Assignee: The Dow Chemical CompanyInventors: Chester E. Pawloski, Joseph E. Dunbar, Muthiah N. Inbasekaran
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Patent number: 4994560Abstract: A group of functionalized polyamine chelants that form complexes with radioactive rhodium are disclosed. The rhodium complexes can be attached to an antibody or antibody fragment and used for therapeutic or diagnostic purposes.Type: GrantFiled: June 24, 1987Date of Patent: February 19, 1991Assignee: The Dow Chemical CompanyInventors: William J. Kruper, Jr., Douglas K. Pollock, William A. Fordyce, Michael J. Fazio, Muthiah N. Inbasekaran
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Patent number: 4885403Abstract: A process for preparing an aromatic propargyl ether, preferably bispropargyl ether, from phenolic compounds comprising vigorously stirring a propargyl halide, preferably propargyl chloride, with a phenolic compound, such as bisphenol A, in an aqueous sodium hydroxide solution at a temperature of from about 0.degree. C. to about 100.degree. C., in the presence of a phase transfer catalyst such as tetrabutylammonium bromide. The mixture is then filtered to recover a solid product. That product is washed with water and propanol. This process provides a product having greater than 98% purity in yields ranging from 85 to 97% of theoretical.Type: GrantFiled: July 29, 1988Date of Patent: December 5, 1989Assignee: The Dow Chemical CompanyInventors: Muthiah N. Inbasekaran, Stoil K. Dirlikov
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Patent number: 4870213Abstract: Aryloxyperfluoroalkyl arenes are disclosed which have relatively low melting points and pour points and are useful as high temperature lubricants. Examples of the invention include 1-(m-phenoxyphenoxy)-2-phenyl-1, 1,2,2,-tetrafluoroethane and 1-(m-phenoxyphenoxy)-2-(m-trifluoromethylphenoxy-m-phenoxyphenoxy)-1,1,2,2 -t etrafluoroethane.Type: GrantFiled: January 3, 1989Date of Patent: September 26, 1989Assignee: The Dow Chemical CompanyInventors: Muthiah N. Inbasekaran, Ted A. Morgan