Patents by Inventor Ming-Hsiung Yeh
Ming-Hsiung Yeh 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: 5609555Abstract: The present invention relates to the composition, preparation, and use of multi-layer composite films comprising a core layer of low gas permeable material, two intermediate layers sandwiching the core layer, and two outer layers sandwiching the two intermediate layers. The core layer provides the excellent oxygen barrier property, whereas the intermediate and outer layers protect the core layer so the oxygen permeability of the resulting multi-layer composite film becomes independent on relative humidity.Type: GrantFiled: July 22, 1994Date of Patent: March 11, 1997Assignee: Dow Corning CorporationInventors: Chi-Long Lee, Ming-Hsiung Yeh
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Patent number: 5608094Abstract: 1,1-dimethyl-2,3-benzo-1-sila-2-cyclobutene was synthesized from 2-bromobenzyl bromide through a modified Grignard procedure, which resulted in a higher (41%) than literature reported yield (35%). An alternative approach with a much less costly 2-chlorobenzyl chloride as starting material is also disclosed. In addition, new di-benzosilacyclobutene compounds were synthesized with our modified Grignard procedure. The compounds are useful as coating materials for surfaces, and when applied to metallic surfaces, can be used neat.Type: GrantFiled: October 4, 1995Date of Patent: March 4, 1997Assignee: Dow Corning CorporationInventors: Chi-Long Lee, Ming-Hsiung Yeh
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Patent number: 5578544Abstract: The present invention relates to a method of controlling the polymerization of acrylates using a catalyst which is selected from at least one of zinc, cadmium, or mercury halides in combination with free iodine to give acrylate polymers having narrow molecular weight distributions, via group transfer polymerization.Type: GrantFiled: April 6, 1995Date of Patent: November 26, 1996Assignee: Dow Corning CorporationInventor: Ming-Hsiung Yeh
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Patent number: 5565048Abstract: The present invention relates to the composition, preparation, and use of multi-layer composite films comprising a core layer of low gas permeable material, two intermediate layers sandwiching the core layer, and two outer layers sandwiching the two intermediate layers. The core layer provides the excellent oxygen barrier property, whereas the intermediate and outer layers protect the core layer so the oxygen permeability of the resulting multi-layer composite film becomes independent on relative humidity.Type: GrantFiled: July 22, 1994Date of Patent: October 15, 1996Assignee: Dow Corning CorporationInventors: Chi-Long Lee, Ming-Hsiung Yeh
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Patent number: 5494547Abstract: The present invention relates to the composition, preparation, and use of multi-layer composite films comprising a core layer of low gas permeable material, two intermediate layers sandwiching the core layer, and two outer layers sandwiching the two intermediate layers. The core layer provides the excellent oxygen barrier property, whereas the intermediate and outer layers protect the core layer so the oxygen permeability of the resulting multi-layer composite film becomes independent on relative humidity.Type: GrantFiled: February 24, 1994Date of Patent: February 27, 1996Assignee: Dow Corning CorporationInventors: Chi-Long Lee, Ming-Hsiung Yeh
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Patent number: 5434007Abstract: The present invention relates to the composition and preparation of composite films which exhibit low oxygen and flavor/aroma transmission rates. The film comprises a silane resin coated on a plastic substrate. The silane resin is formed from the mixture of a silane solution, an acrylate, a solvent, and optionally, either an additive, water or both. This invention teaches that a variety of silane solutions and acrylates may be mixed with different solvents to achieve the desired oxygen and flavor/aroma barrier characteristics.Type: GrantFiled: September 20, 1993Date of Patent: July 18, 1995Assignee: Dow Corning CorporationInventor: Ming-Hsiung Yeh
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Patent number: 5399641Abstract: The present invention relates to a method of controlling the polymerization of acrylates using a catalyst which is selected from at least one of zinc, cadmium, or mercury halides in combination with free iodine to give acrylate polymers having narrow molecular weight distributions, via group transfer polymerization.Type: GrantFiled: May 24, 1994Date of Patent: March 21, 1995Assignee: Dow Corning CorporationInventor: Ming-Hsiung Yeh
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Patent number: 5372880Abstract: The present invention relates to the composition, preparation, and use of multi-layer composite films comprising a core layer of low gas permeable material, two intermediate layers sandwiching the core layer, and two outer layers sandwiching the two intermediate layers. The core layer provides the excellent oxygen barrier property, whereas the intermediate and outer layers protect the core layer so the oxygen permeability of the resulting multi-layer composite film becomes independent on relative humidity.Type: GrantFiled: May 14, 1993Date of Patent: December 13, 1994Assignee: Dow Corning CorporationInventors: Chi-Long Lee, Ming-Hsiung Yeh
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Patent number: 5370937Abstract: The present invention relates to the composition, preparation, and use of multi-layer composite films comprising a core layer of low gas permeable material, two intermediate layers sandwiching the core layer, and two outer layers sandwiching the two intermediate layers. The core layer provides the excellent oxygen barrier property, whereas the intermediate and outer layers protect the core layer so the oxygen permeability of the resulting multi-layer composite film becomes independent on relative humidity.Type: GrantFiled: September 20, 1993Date of Patent: December 6, 1994Assignee: Dow Corning CorporationInventors: Chi-Long Lee, Ming-Hsiung Yeh
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Patent number: 5358572Abstract: The process of the present invention teaches a novel method of cleansing a silane coated substrate of excess vinyl benzaldehyde. The basic process comprises the step of rinsing the silane coated substrate in acid, prior to exposing the silane coated film to the beverage. Alternatively, the silane coated substrate may be washed with water after the silane coated substrate is rinsed in the acid. Another alternate method teaches repeating the acid wash and water rinse steps either with the same or a different acid.Type: GrantFiled: May 27, 1993Date of Patent: October 25, 1994Assignee: Dow Corning CorporationInventor: Ming-Hsiung Yeh
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Patent number: 5359018Abstract: The present invention relates to a method of controlling the polymerization of acrylates using a catalyst which is selected from at least one of zinc, cadmium, or mercury halides in combination with free iodine to give acrylate polymers having narrow molecular weight distributions, via group transfer polymerization.Type: GrantFiled: January 10, 1994Date of Patent: October 25, 1994Assignee: Dow Corning CorporationInventor: Ming-Hsiung Yeh
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Patent number: 5348771Abstract: A composite films which exhibit low oxygen transmission rates. The film comprises a silane resin coated on a plastic substrate then cured by ultraviolet radiation. For the silane coating, this invention relies on a class of organosilicon compounds derived from 1) organohydrogensilanes or organohydrogensiloxanes and 2) propargyl esters of carboxylic acids containing a terminal aromatic hydrocarbon radical, where the carbopropynoxy group of the ester and the aromatic hydrocarbon radical are separated by at least two adjacent ethylenically unsaturated carbon atoms. If more than two of these carbon atoms are present they form a sequence of conjugated ethylenic double bonds which allows the polymer to cross-link upon exposure to ultraviolet radiation.Type: GrantFiled: November 19, 1993Date of Patent: September 20, 1994Assignee: Dow Corning CorporationInventors: Chi-Long Lee, Ming-Hsiung Yeh
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Patent number: 5279898Abstract: The present invention provides microencapsulated hydrosilylation catalysts for one-part heat curable organosiloxane compositions. Compositions containing these exhibit long-term storage stability yet cure rapidly when heated above the melting point of the encapsulating polymer. At least a portion of these microcapsules are less than one micron in diameter, and substantially all are less than about three microns in diameter. Compositions containing the preferred platinum group metals as catalysts are optically transparent.The microencapsulated curing catalysts of this invention are prepared by irradiating with UV light in the wavelength range of from 300 to 400 nanometers a solution containing (1) at least one of a specified group of photocrosslinkable organosiloxane compounds derived from propargyl esters of carboxylic acids containing a terminal aromatic hydrocarbon radical and at least two ethylenically unsaturated carbon atoms and (2) a liquid or solubilized hydrosilylation catalyst.Type: GrantFiled: January 7, 1993Date of Patent: January 18, 1994Assignee: Dow Corning CorporationInventors: Steven M. Evans, Chi-Long Lee, Ming-Hsiung Yeh
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Patent number: 5194460Abstract: The present invention provides microencapsulated hydrosilylation catalysts for one-part heat curable organosiloxane compositions. Compositions containing these exhibit long-term storage stability yet cure rapidly when heated above the melting point of the encapsulating polymer. At least a portion of these microcapsules are less than one micron in diameter, and substantially all are less than about three microns in diameter. Compositions containing the preferred platinum group metals as catalysts are optically transparent.The microencapsulated curing catalysts of this invention are prepared by irradiating with UV light in the wavelength range of from 300 to 400 nanometers a solution containing (1) at least one of a specified group of photocrosslinkable organosiloxane compounds derived from propargyl esters of carboxylic acids containing a terminal aromatic hydrocarbon radical and at least two ethylenically unsaturated carbon atoms and (2) a liquid or solubilized hydrosilylation catalyst.Type: GrantFiled: January 2, 1992Date of Patent: March 16, 1993Assignee: Dow Corning CorporationInventors: Steven M. Evans, Chi-Long Lee, Ming-Hsiung Yeh
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Patent number: 5136065Abstract: Novel propargyl esters are prepared by a base catalyzed condensation reaction of propargyl esters of carboxylic acids containing a labile hydrogen atom at the alpha position relative to the carboxy group, and a terminal aromatic hydrocarbon radical that is linked to the carboxy group through a sequence of carbon atoms containing at least one carbon-to-carbon double bond. If more than one of these double bonds are present they form a conjugated sequence. Novel organosilicon compounds are prepared by reacting these propargyl esters with an organohydrogensilane or an organohydrogensiloxane. The organosilicon compounds undergo a reversible crosslinking reaction in the presence of ultraviolet light.Type: GrantFiled: December 30, 1991Date of Patent: August 4, 1992Assignee: Dow Corning CorporationInventor: Ming-Hsiung Yeh
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Patent number: 5125998Abstract: A process for improving the bath life and/or cure time of curable compositions. The process comprises first mixing an inhibitor with a catalyst, then adding that mixture to an organosilicon compound, and then adding the resulting mixture to an organohydrogensilicon compound. The process can optionally comprise a bath life extender compound. This process produces curable coating compositions which have a long bath life at room temperature and/or a rapid cure time at elevated temperatures such that they are useful in fast-paced coating operations, such as adhesive release coating operations wherein the cured coating is further coated with an adhesive immediately after being cured.Type: GrantFiled: May 2, 1991Date of Patent: June 30, 1992Assignee: Dow Corning CorporationInventors: John D. Jones, Leroy E. Thayer, Ming-Hsiung Yeh
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Patent number: 5108791Abstract: A curable organosilicon composition comprises a component having silicon-bonded hydrogen atoms, a component having silicon-bonded radicals reactive therewith, a curing catalyst, a catalyst-inhibitor and a bath life extender. The use of certain compounds, which are ineffective as a bath life extender in the absence of a catalyst inhibitor, effectively extend the room temperature bath life of a silicone coating composition containing a catalyst inhibitor. Being a substantial non-inhibitor for the catalyst the bath life extender component does not effect the cure time and/or cure temperature of the composition.This discovery has permitted the preparation of curable coating compositions which have a long bath life at room temperature and a rapid cure time at elevated temperatures which does not drift to longer intervals as the coating compositions ages over a typical production run.Type: GrantFiled: April 1, 1991Date of Patent: April 28, 1992Assignee: Dow Corning CorporationInventors: Kyuha Chung, Antony P. Wright, Ming-Hsiung Yeh
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Patent number: 5077249Abstract: The present invention provides microencapsulated liquid or solubilized curing catalysts for one-part heat curable organosiloxane compositions. Compositions containing these exhibit long-term storage stability yet cure rapidly when heated above the melting point of the encapsulating polymer. At least a portion of these microcapsules are less than one micron in diameter, and substantially all are less than about three microns in diameter. Compositions containing the preferred platinum group metals as catalysts are optically transparent.The microencapsulated curing catalysts of this invention are prepared by the photoinitiated polymerization of at least one solubilized hydroxyl-containing ethylenically unsaturated organic compound in the presence of a photoinitiator for the polymerization of said compound, an optional surfactant, and a liquid or solubilized curing catalyst for organosiloxane compositions.Type: GrantFiled: March 21, 1991Date of Patent: December 31, 1991Assignee: Dow Corning CorporationInventors: Chi-Long Lee, Ming-Hsiung Yeh
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Patent number: 5066699Abstract: The present invention provides microencapsulated liquid or solubilized curing catalysts for one-part heat curable organosiloxane compositions. The curing catalysts are prepared by the photoinitiated polymerization of at least one solubilized hydroxyl-containing ethylenically unsaturated organic compound in the presence of a photoinitiator for the polymerization of said compound, an optional surfactant, and a liquid or solubilized curing catalyst for organosiloxane compositions. The curing agent is in the form of coordination complex with an ethylenically or acetylenically unsaturated organic compound and the solvent for the polymerization reaction is a mono- or polyhydric alcohol. At least a portion of the present microcapsules are less than one micron in diameter, and substantially all are less than about three microns in diameter. Compositions containing the preferred platinum group metals as catalysts are optically transparent.Type: GrantFiled: August 31, 1990Date of Patent: November 19, 1991Assignee: Dow Corning CorporationInventors: Chi-Long Lee, Ming-Hsiung Yeh
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Patent number: 5036117Abstract: A curable organosilicon composition comprises a component having silicon-bonded hydrogen atoms, a component having silicon-bonded radicals reactive therewith, a curing catalyst, a catalyst-inhibitor and a bath life extender. The use of certain compounds, which are ineffective as a bath life extender in the absence of a catalyst inhibitor, effectively extend the room temperature bath life of a silicone coating composition containing a catalyst inhibitor. Being a substantial non-inhibitor for the catalyst the bath life extender component does not effect the cure time and/or cure temperature of the composition.This discovery has permitted the preparation of curable coating compositions which have a long bath life at room temperature and a rapid cure time at elevated temperatures which does not drift to longer intervals as the coating compositions ages over a typical production run.Type: GrantFiled: November 3, 1989Date of Patent: July 30, 1991Assignee: Dow Corning CorporationInventors: Kyuha Chung, Antony P. Wright, Ming-Hsiung Yeh