Patents by Inventor Therese M. Bauman

Therese M. Bauman 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).

  • Patent number: 5330724
    Abstract: An apparatus for preparing foams exhibiting a uniformly small cell size, a minimum number of ruptured cell walls and a smooth surface from foamable curable compositions comprises means to transport the ingredients of a foamable, curable composition to the input of a static mixer in which the ingredients of the composition are blended to homogeneity prior to being extruded into an exit zone and through an exit orifice. The length to diameter ratio of the mixing zone and the diameter of the exit orifice are within specified ranges.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: July 19, 1994
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Todd S. Klenk
  • Patent number: 5252627
    Abstract: An apparatus for preparing foams exhibiting a uniformly small cell size, a minimum number of ruptured cell walls and a smooth surface from foamable curable compositions comprises means to transport the ingredients of a foamable, curable composition to the input of a static mixer in which the ingredients of the composition are blended to homogeneity prior to being extruded into an exit zone and through an exit orifice. The length to diameter ratio of the mixing zone and the diameter of the exit orifice are within specified ranges.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: October 12, 1993
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Todd S. Klenk
  • Patent number: 5127552
    Abstract: A foam mixer-applicator for mixing a two-part foamable composition includes a mixing head having a mixing chamber for impingement mixing of the two component parts of the foamable composition, which are supplied to the mixing chamber in a pre-pressurized state. The mixing head is sealingly connected to a dispensing head having a foaming chamber of a substantially greater capacity than the mixing chamber and an outlet port for discharging the foam composition after foaming and acquiring a higher, yet flowable viscosity. A pneumatic plunger system pushes the foamed composition through an outlet port of the dispensing housing onto a substrate.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: July 7, 1992
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Todd S. Klenk
  • Patent number: 4647618
    Abstract: This invention describes a method of producing a silicone elastomer from an emulsion. When the ingredients are mixed together, the resulting latex can be used immediately. Removing the water from the latex results in a silicone elastomer. The method combines (A) an anionically stabilized, hydroxyl endblocked polydiorganosiloxane, present as an emulsion of dispersed particles in water, the emulsion having a pH of greater than 9, (B) dialkyltindicarboxylate, (C) alkylorthosilicate, (D) colloidal silica, and optionally (E) water, admixing (A) and (B) only in the presence of (C) to produce a dispersion of the ingredients in water. The ingredients can be distributed into a two-part system for storage. One embodiment includes fibers, lauryl alcohol, or a mixture of both in the emulsion; then forms an open-cell, elastomeric foam by forming a froth from the emulsion and removing the water from the froth.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: March 3, 1987
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Alan L. Freiberg
  • Patent number: 4634733
    Abstract: This invention describes a method of producing a silicone elastomer from an emulsion. When the ingredients are mixed together, the resulting latex can be used immediately. Removing the water from the latex results in a silicone elastomer. The method combines (A) an anionically stabilized, hydroxyl endblocked polydiorganosiloxane, present as an emulsion of dispersed particles in water, the emulsion having a pH of greater than 9, (B) dialkyltindicarboxylate, (C) alkylorthosilicate, (D) colloidal silica, and optionally (E) water, admixing (A) and (B) only in the presence of (C) to produce a dispersion of the ingredients in water. The ingredients can be distributed into a two-part system for storage. One embodiment includes fibers, lauryl alcohol, or a mixture of both in the emulsion; then forms an open-cell, elastomeric foam by forming a froth from the emulsion and removing the water from the froth.
    Type: Grant
    Filed: May 28, 1986
    Date of Patent: January 6, 1987
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Alan L. Freiberg
  • Patent number: 4631296
    Abstract: This invention describes a method of producing a silicone elastomer from an emulsion. When the ingredients are mixed together, the resulting latex can be used immediately. Removing the water from the latex results in a silicone elastomer. The method combines (A) an anionically stabilized, hydroxyl endblocked polydiorganosiloxane, present as an emulsion of dispersed particles in water, the emulsion having a pH of greater than 9, (B) dialkyltindicarboxylate, (C) alkylorthosilicate, (D) colloidal silica, and optionally (E) water, admixing (A) and (B) only in the presence of (C) to produce a dispersion of the ingredients in water. The ingredients can be distributed into a two-part system for storage. One embodiment includes fibers, lauryl alcohol, or a mixture of both in the emulsion; then forms an open-cell, elastomeric foam by forming a froth from the emulsion and removing the water from the froth.
    Type: Grant
    Filed: May 28, 1986
    Date of Patent: December 23, 1986
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Alan L. Freiberg
  • Patent number: 4618645
    Abstract: A method of producing an emulsion of crosslinked polydiorganosiloxane admixes hydroxyl endblocked polydiorganosiloxane, alkoxy silicone compound, anionic emulsifying agent, and water. The mixture is homogenized, then the emulsion is admixed with surface active anionic catalyst. Maintaining the catalyzed emulsion, having a pH of less than 5, at room temperature allows the ingredients to react to raise the molecular weight of the polydiorganosiloxane and to crosslink the polymer. The reaction is halted by adding sufficient base to raise the pH to greater than 7. The resultant latex yields an elastomer upon removal of the water. When colloidal silica is also added to the mixture before homogenization, the final latex yields a reinforced elastomer upon removal of the water.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: October 21, 1986
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, David J. Huebner
  • Patent number: 4613630
    Abstract: This invention relates to a method of producing silicone elastomeric foam of low density. The method mixes polydiorganosiloxanes having hydroxyl endblocking or vinyl endblocking or mixtures of both along with water to react with silicon hydride in the presence of platinum catalyst to release hydrogen gas to create a froth which cures to a foam. The combination of ingredients allows the manufacture of silicone foam having different combinations of properties than those obtained from previous methods. Embodiments of the invention also make use of specific profoamers and specific alcohols to further modify the properties of the foams produced. The method of this invention yields a low cost, low density, silicone elastomeric foam having physical properties which enable it to be used in cushioning and sealing applications.
    Type: Grant
    Filed: March 3, 1986
    Date of Patent: September 23, 1986
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, John E. Dietlein
  • Patent number: 4608396
    Abstract: A method of producing elastomeric silicone foams from a two-part system is disclosed. The method mixes the ingredients then allows a froth to form and cure at ambient temperature to an elastomeric silicone foam. The method mixes a vinyl-containing polydiorganosiloxane (1), a hydroxylated polydiorganosiloxane (2), a platinum catalyst (3), an organohydrogensiloxane (4) and a profoamer (5). The profoamer is a resinous, benzene-soluble organosiloxane copolymer consisting essentially of SiO.sub.4/2 units, silicone bonded hydroxyl groups, (CH.sub.3).sub.3 SiO.sub.1/2 units, and fluorine-containing units. An embodiment of the method includes a liquified blowing agent and stores the mixture under superatmospheric pressure, forming a foam by releasing the mixture to atmospheric pressure. Another embodiment includes an alcohol in the mixture to provide a foam of lower density.
    Type: Grant
    Filed: February 3, 1986
    Date of Patent: August 26, 1986
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Chi-Long Lee, James A. Rabe
  • Patent number: 4599367
    Abstract: This invention relates to a method of producing silicone elastomeric foam of low density. The method mixes polydiorganosiloxanes having hydroxyl endblocking or vinyl endblocking or mixtures of both along with water to react with silicon hydride in the presence of platinum catalyst to release hydrogen gas to create a froth which cures to a foam. The combination of ingredients allows the manufacture of silicone foam having different combinations of properties than those obtained from previous methods. Embodiments of the invention also make use of specific profoamers and specific alcohols to further modify the properties of the foams produced. The method of this invention yields a low cost, low density, silicone elastomeric foam having physical properties which enable it to be used in cushioning and sealing applications.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: July 8, 1986
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, John E. Dietlein
  • Patent number: 4593049
    Abstract: A method of producing elastomeric silicone foams from a two-part system is disclosed. The method mixes the ingredients then allows a froth to form and cure at ambient temperature to an elastomeric silicone foam. The method mixes a vinyl-containing polydiorganosiloxane (1), a hydroxylated polydiorganosiloxane (2), a platinum catalyst (3), an organohydrogensiloxane (4) and a profoamer (5). The profoamer is a resinous, benzene-soluble organosiloxane copolymer consisting essentially of SiO.sub.4/2 units, silicone bonded hydroxyl groups, (CH.sub.3).sub.3 SiO.sub.1/2 units, and fluorine-containing units. An embodiment of the method includes a liquified blowing agent and stores the mixture under superatmospheric pressure, forming a foam by releasing the mixture to atmospheric pressure. Another embodiment includes an alcohol in the mixture to provide a foam of lower density.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: June 3, 1986
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Chi-Long Lee, James A. Rabe
  • Patent number: 4590220
    Abstract: This invention describes a method of producing a silicone elastomer from an emulsion. When the ingredients are mixed together, the resulting latex can be used immediately. Removing the water from the latex results in a silicone elastomer. The method combines (A) an anionically stabilized, hydroxyl endblocked polydiorganosiloxane, present as an emulsion of dispersed particles in water, the emulsion having a pH of greater than 9, (B) dialkyltindicarboxylate, (C) alkylorthosilicate, (D) colloidal silica, and optionally (E) water, admixing (A) and (B) only in the presence of (C) to produce a dispersion of the ingredients in water. The ingredients can be distributed into a two-part system for storage. One embodiment includes fibers, lauryl alcohol, or a mixture of both in the emulsion; then forms an open-cell, elastomeric foam by forming a froth from the emulsion and removing the water from the froth.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: May 20, 1986
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Alan L. Freiberg
  • Patent number: 4590222
    Abstract: This invention discloses a method of controlling the relative physical properties of foams such as density and compressibility or density and Bashore resiliency for compositions which consist essentially of triorganosiloxy endblocked polydiorganosiloxane having at least two vinyl radicals, platinum catalyst, organohydrogensiloxane, and hydroxyl endblocked polydiorganoisiloxane. The relative values of the physical properties are adjusted by the addition of varying amounts of organic alcohol having from 3 to 12 carbon atoms to the composition.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: May 20, 1986
    Assignee: Dow Corning Corporation
    Inventor: Therese M. Bauman
  • Patent number: 4584324
    Abstract: A composition useful in producing an open-cell, elastomeric silicone foam combines a silicone oil-in-water emulsion, which forms an elastomer upon removal of the water, with an aerosol propellant. When the composition is discharged to atmospheric pressure, a froth is formed. Removing water from the froth yields an open-cell foam. The froth is stabilized by surfactants, thickeners, or froth stabilizers selected from fibers or lauryl alcohol.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: April 22, 1986
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Chi-Long Lee, James A. Rabe
  • Patent number: 4567212
    Abstract: Moisture curable, foamable compositions that do not slump appreciably in the uncured state when applied on a vertical surface, consist essentially of an RTV elastomeric composition, from 10 to 50 weight percent of a liquified blowing agent and less than 12 weight percent finely divided filler. The RTV elastomeric composition comprises the product obtained by mixing at least two moisture curable polydiorganosiloxanes with an effective amount of a moisture reactive crosslinker. A graft copolymer derived from a liquid polydiorganosiloxane and an ethylenically unsaturated organic monomer constitutes from 5 to 80 weight percent of the polydiorganosiloxanes.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: January 28, 1986
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Chi-Long Lee
  • Patent number: 4559369
    Abstract: A composition useful in producing an open-cell, elastomeric silicone foam combines a silicone oil-in-water emulsion, which forms an elastomer upon removal of the water, with an aerosol propellant. When the composition is discharged to atmospheric pressure, a froth is formed. Removing water from the froth yields an open-cell foam. The froth is stabilized by surfactants, thickeners, or froth stabilizers selected from fibers or lauryl alcohol.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: December 17, 1985
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Chi-long Lee, James A. Rabe
  • Patent number: 4552901
    Abstract: Moisture curable, foamable compositions that do not slump appreciably in the uncured state when applied on a vertical surface, consist essentially of an RTV elastomeric composition, from 10 to 50 weight percent of a liquified blowing agent and at least 12 weight percent finely divided filler. The RTV elastomeric composition comprises the product obtained by mixing at least two moisture curable polydiorganosiloxanes with an effective amount of a moisture reactive crosslinker. A graft copolymer derived from a liquid polydiorganosiloxane and an ethylenically unsaturated organic monomer constitutes from 5 to 80 weight percent of the polydiorganosiloxanes.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: November 12, 1985
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Chi-Long Lee
  • Patent number: 4548958
    Abstract: Moisture curable, foamable compositions, that do not slump appreciably in the uncured state when applied on a vertical surface, consist essentially of an RTV elastomeric composition, a liquified blowing agent and finely divided silica. The RTV elastomeric composition comprises the product obtained by mixing (1) at least two hydroxyl endblocked polymers selected from diorganosiloxane homopolymers and copolymers, and (2) an effective amount of a moisture reactive crosslinker for the hydroxyl endblocked polymer where from 0 to 80% by weight of said hydroxyl enblocked polymers is a graft copolymer derived from a liquid polydiorganosiloxane and an ethylenically unsaturated organic monomer. When the silica content is less than 10 percent by weight of the composition or the blowing agent concentration exceeds 20 percent by weight of said composition, the composition contains a slump inhibiting amount of said graft copolymer.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: October 22, 1985
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Chi-Long Lee
  • Patent number: 4529741
    Abstract: Moisture curable, foamable compositions that do not flow appreciably in the uncured state when applied on a vertical surface comprise an RTV elastomeric composition, a liquified blowing agent and finely divided silica in combination with either small diameter glass, metal or graphite fibers or carbon black. The RTV elastomeric composition comprises (1) at least one hydroxyl endblocked diorganosiloxane homopolymer or graft copolymer, and (2) an effective amount of a moisture reactive crosslinker for the hydroxyl endblocked polymer.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: July 16, 1985
    Assignee: Dow Corning Corporation
    Inventors: Therese M. Bauman, Chi-Long Lee