Patents Assigned to Gelest Technologies, Inc.
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Patent number: 9145474Abstract: A convenient, practical method for forming elastomers from dual functional siloxanes that cure by a step-growth mechanism is provided. The method involves preparing a first mixture containing a first telechelic siloxane and a hydrosilylation catalyst; preparing a second mixture containing a second telechelic siloxane and a dual functional siloxane having two different polymer termini; and reacting the first mixture with the second mixture to produce the siloxane elastomer. The first and second mixtures may be stored separately until time of use.Type: GrantFiled: March 7, 2014Date of Patent: September 29, 2015Assignee: Gelest Technologies, Inc.Inventors: Barry C. Arkles, Jonathan D. Goff
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Patent number: 8987494Abstract: A series of silicon compounds are provided, which are excellent precursors to small carbosilanes, such as 1,3,5-trisilapentane, 2,4,6-trisilaheptane, tris(silylmethyl)silane and tetrakis(silylmethyl)silane. A method of preparing a carbosilane involves forming a Grignard, lithium, or metallic reagent from a halomethyltrialkoxysilane, reacting the Grignard, lithium, or metallic reagent with a dihalodihydridosilane, a trihalohydridosilane, a tetrahalosilane, a dialkoxydihydridosilane, a trialkoxyhydridosilane, or a tetraalkoxysilane to yield a carbosilane precursor, and reducing the precursor to form the carbosilane.Type: GrantFiled: February 26, 2013Date of Patent: March 24, 2015Assignee: Gelest Technologies, Inc.Inventors: Gerald L. Larson, Youlin Pan, Barry C. Arkles
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Publication number: 20150050505Abstract: This invention pertains to UV-absorbing coatings that may optionally be covered with an anti-reflective layer and that are applied to exterior-facing surfaces such as a window or other glass surface that are transparent or translucent. Such coatings are visible to various species of birds, but are generally transparent to humans. The UV absorbing coatings have a silane- or silane-derived chromophore or a combination of a silane- or siloxane-based material and a chromophore, which chromophores absorb UV light at about 300 to about 400 nm. More particularly, the silane- or siloxane-based chromophore is 2-hydroxy-4-(3-triethoxysilylpropoxy) diphenylketone or a derivative thereof.Type: ApplicationFiled: August 16, 2013Publication date: February 19, 2015Applicant: Gelest Technologies IncInventor: Barry C. Arkles
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Patent number: 8952118Abstract: Linear siloxane polymers having low viscosities, precise molecular weights and two distinct polymer termini are provided. Preferred viscosities are greater than 5 cSt and less than 20,000 cSt, and the preferred functionalities at the polymer termini are one hydrogen and one vinyl group, each attached to a silicon atom. Methods for producing such siloxane polymers are also described In the presence of catalysts, such as Pt0 complexes, these siloxanes undergo step-growth polymerization to form elastomers at temperatures below 150° C.Type: GrantFiled: August 8, 2012Date of Patent: February 10, 2015Assignee: Gelest Technologies, Inc.Inventors: Barry C. Arkles, Jonathan D. Goff
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Patent number: 8921579Abstract: Pendant dipodal silanes having formula (I) and methods for their synthesis are provided. In formula (I), R is an organic radical other than methyl and X may be a halogen, an alkoxy group, an acetoxy group, or a dialkylamino group. Films, adhesives, and composites formed from the inventive dipodal silanes generally demonstrate significantly greater hydrolytic resistance and film-forming ability than conventional silanes.Type: GrantFiled: March 7, 2014Date of Patent: December 30, 2014Assignee: Gelest Technologies, Inc.Inventors: Barry C. Arkles, Youlin Pan, Gerald L. Larson
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Publication number: 20140275574Abstract: Pendant dipodal silanes having formula (I) and methods for their synthesis are provided. In formula (I), R is an organic radical other than methyl and X may be a halogen, an alkoxy group, an acetoxy group, or a dialkylamino group. Films, adhesives, and composites formed from the inventive dipodal silanes generally demonstrate significantly greater hydrolytic resistance and film-forming ability than conventional silanes.Type: ApplicationFiled: March 7, 2014Publication date: September 18, 2014Applicant: Gelest Technologies, Inc.Inventors: Barry C. ARKLES, Youlin PAN, Gerald L. LARSON
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Publication number: 20140275406Abstract: A convenient, practical method for forming elastomers from dual functional siloxanes that cure by a step-growth mechanism is provided. The method involves preparing a first mixture containing a first telechelic siloxane and a hydrosilylation catalyst; preparing a second mixture containing a second telechelic siloxane and a dual functional siloxane having two different polymer termini; and reacting the first mixture with the second mixture to produce the siloxane elastomer. The first and second mixtures may be stored separately until time of use.Type: ApplicationFiled: March 7, 2014Publication date: September 18, 2014Applicant: Gelest Technologies, Inc.Inventors: Barry C. ARKLES, Jonathan D. GOFF
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Patent number: 8779080Abstract: Novel silicon compounds containing a siloxane or silane moiety and at least one moiety derived from a furfuryl alcohol, and methods for their synthesis, are provided. The novel compounds may be used as surface modifying agents, surfactants, defoamers, and as monomers for silicone polymerization.Type: GrantFiled: October 14, 2013Date of Patent: July 15, 2014Assignee: Gelest Technologies, Inc.Inventors: Barry C. Arkles, Youlin Pan, Jonathan D. Goff
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Patent number: 8653294Abstract: Novel silicone compounds containing a siloxane moiety and at least one terpenyl moiety, such as limonenyl or valencenyl, and methods for their synthesis, are provided. The novel compounds are appropriate for incorporation into cosmetic formulations due to their low aroma, resistance to deterioration, and favorable solubility properties.Type: GrantFiled: February 14, 2012Date of Patent: February 18, 2014Assignee: Gelest Technologies, Inc.Inventors: Barry C. Arkles, Rudolph Cameron, Youlin Pan, Gerald L. Larson
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Publication number: 20140046017Abstract: Novel silicon compounds containing a siloxane or silane moiety and at least one moiety derived from a furfuryl alcohol, and methods for their synthesis, are provided. The novel compounds may be used as surface modifying agents, surfactants, defoamers, and as monomers for silicone polymerization.Type: ApplicationFiled: October 14, 2013Publication date: February 13, 2014Applicant: GELEST TECHNOLOGIES, INC.Inventors: Barry C. ARKLES, Youlin PAN, Jonathan D. GOFF
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Patent number: 8575381Abstract: Novel trihydridosilyl-terminated polysilanes and methods for their synthesis, which are applicable to other polysilanes, are provided. The synthetic methods provide for facile preparation of products with minimal handling of pyrophoric intermediates and byproducts. The novel compounds contain at least three silicon-silicon bonds and at least one terminal silicon atom having three hydrogen substituents.Type: GrantFiled: September 16, 2011Date of Patent: November 5, 2013Assignee: Gelest Technologies, Inc.Inventors: Barry C. Arkles, Youlin Pan, Gerald L. Larson
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Patent number: 8563459Abstract: The invention includes a fixed-bed catalyst complex that includes (i) a metal carbene catalyst, wherein the metal is platinum, and (ii) a catalyst support that includes one or more of silica, alumina and/or glass. The invention provides a fixed-bed catalyst complex that includes a catalyst complex including a carbene chosen from those represented by at least one of Formulae (I), (II), (III), and (IV): Where the vales of X and R1 to R7 are specifically defined. The complex also includes a catalyst support that comprises silica, related reaction products, and related reaction systems.Type: GrantFiled: April 30, 2010Date of Patent: October 22, 2013Assignee: Gelest Technology, Inc.Inventors: Gerald L. Larson, Barry C. Arkles, Rudolph A. Cameron
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Publication number: 20130274497Abstract: A series of silicon compounds are provided, which are excellent precursors to small carbosilanes, such as 1,3,5-trisilapentane, 2,4,6-trisilaheptane, tris(silylmethyl)silane and tetrakis(silylmethyl)silane. A method of preparing a carbosilane involves forming a Grignard, lithium, or metallic reagent from a halomethyltrialkoxysilane, reacting the Grignard, lithium, or metallic reagent with a dihalodihydridosilane, a trihalohydridosilane, a tetrahalosilane, a dialkoxydihydridosilane, a trialkoxyhydridosilane, or a tetraalkoxysilane to yield a carbosilane precursor, and reducing the precursor to form the carbosilane.Type: ApplicationFiled: February 26, 2013Publication date: October 17, 2013Applicant: GELEST TECHNOLOGIES, INC.Inventors: Gerald L. LARSON, Youlin PAN, Barry C. ARKLES
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Patent number: 8455599Abstract: Low molecular weight siloxane materials having one functional group are provided which have reduced tendency to form phase separated domains after polymerization. Two classes of siloxane materials are included: (1) symmetric siloxane macromonomers containing at least two monomer termini and one polymerizable functional group which is equidistant from the termini, and (2) assymetric siloxane macromonomers having at least one polymerizable functional group terminus and at least one oxygen-containing polar hydrophilic terminus selected from the group consisting of hydroxyl, ether, and polyether. Symmetric siloxane macromonomers having hydroxyl termini are useful for forming biocompatible materials, such as for contact lenses, tissue regeneration scaffold polymers, and coatings to reduce non-specific binding of proteins.Type: GrantFiled: August 4, 2010Date of Patent: June 4, 2013Assignee: Gelest Technologies, Inc.Inventors: Barry C. Arkles, Edward Kimble
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Publication number: 20130041098Abstract: Linear siloxane polymers having low viscosities, precise molecular weights and two distinct polymer termini are provided. Preferred viscosities are greater than 5 cSt and less than 20,000 cSt, and the preferred functionalities at the polymer termini are one hydrogen and one vinyl group, each attached to a silicon atom. Methods for producing such siloxane polymers are also described In the presence of catalysts, such as Pt0 complexes, these siloxanes undergo step-growth polymerization to form elastomers at temperatures below 150° C.Type: ApplicationFiled: August 8, 2012Publication date: February 14, 2013Applicant: GELEST TECHNOLOGIES, INC.Inventors: Barry C. ARKLES, Jonathan D. GOFF
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Publication number: 20120226002Abstract: Novel silicon compounds containing a siloxane or silane moiety and at least one moiety derived from a furfuryl alcohol, and methods for their synthesis, are provided. The novel compounds may be used as surface modifying agents, surfactants, defoamers, and as monomers for silicone polymerization.Type: ApplicationFiled: February 29, 2012Publication date: September 6, 2012Applicant: GELEST TECHNOLOGIES, INC.Inventors: Barry C. ARKLES, Youlin PAN, Jonathan D. GOFF
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Publication number: 20120215019Abstract: Novel silicone compounds containing a siloxane moiety and at least one terpenyl moiety, such as limonenyl or valencenyl, and methods for their synthesis, are provided. The novel compounds are appropriate for incorporation into cosmetic formulations due to their low aroma, resistance to deterioration, and favorable solubility properties.Type: ApplicationFiled: February 14, 2012Publication date: August 23, 2012Applicant: GELEST TECHNOLOGIES, INC.Inventors: Barry C. ARKLES, Rudolph CAMERON, Youlin PAN, Gerald L. LARSON
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Publication number: 20120076840Abstract: Hydrophilic N-acylamino acid, N-acyl dipeptide, and N-acyl tripeptide substituted silanes are prepared which can be utilized as reactive surface treatments for particles of pigments, minerals, and fillers. These treated particles form stable dispersions in the aqueous phase of oil-in-water mixtures that are suitable for cosmetic applications. The treated particles may also be used in pressed powder and color cosmetic formulations.Type: ApplicationFiled: September 23, 2011Publication date: March 29, 2012Applicant: GELEST TECHNOLOGIES, INC.Inventors: Barry C. ARKLES, Jane C. HOLLENBERG, Youlin PAN
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Publication number: 20120071678Abstract: Novel trihydridosilyl-terminated polysilanes and methods for their synthesis, which are applicable to other polysilanes, are provided. The synthetic methods provide for facile preparation of products with minimal handling of pyrophoric intermediates and byproducts. The novel compounds contain at least three silicon-silicon bonds and at least one terminal silicon atom having three hydrogen substituents.Type: ApplicationFiled: September 16, 2011Publication date: March 22, 2012Applicant: GELEST TECHNOLOGIES, INC.Inventors: Barry C. ARKLES, Youlin PAN, Gerald L. LARSON
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Publication number: 20100280266Abstract: The invention includes a fixed-bed catalyst complex that includes (i) a metal carbene catalyst, wherein the metal is platinum, and (ii) a catalyst support that includes one or more of silica, alumina and/or glass. The invention provides a fixed-bed catalyst complex that includes a catalyst complex including a carbene chosen from those represented by at least one of Formulae (I), (II), (III), and (IV): Where the vales of X and R1 to R7 are specifically defined. The complex also includes a catalyst support that comprises silica, related reaction products, and related reaction systems.Type: ApplicationFiled: April 30, 2010Publication date: November 4, 2010Applicant: Gelest Technologies Inc.Inventors: Gerald L. Larson, Barry C. Arkles, Rudolph A. Cameron