Patents by Inventor Pierre-Andre Butikofer
Pierre-Andre Butikofer 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: 9334433Abstract: The current invention relates to a moisture-hardening composition that contains, in addition to a silane-functional polymer with end groups of formula (I), a reaction product that can be manufactured from an amino silane with primary amino groups and an alkene that is free of silane groups. The compositions are characterized by improved expandability with concurrent high reactivity, good adhesion characteristics, and high tear strength and are suited especially for use as elastic bonding substance or sealant.Type: GrantFiled: February 22, 2013Date of Patent: May 10, 2016Assignee: SIKA TECHNOLOGY AGInventors: Marcel Oertli, Barbara Jucker, Ueli Pfenninger, Pierre-Andre Butikofer
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Publication number: 20150368509Abstract: Novel polyamines having secondary amino groups, and a process for producing them, adducts of these polyamines and their uses. The polyamines can be prepared in a simple way from readily available reactants. They and their adducts have, in particular, a low viscosity and are suitable as constituent of polyurethane and polyurea compositions having excellent processability and high flexibility, and also constituent of epoxy resin compositions, especially coatings.Type: ApplicationFiled: August 28, 2015Publication date: December 24, 2015Inventors: Pierre-Andre BUTIKOFER, Urs BURCKHARDT
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Patent number: 8912294Abstract: Polyamines A1 of formula (I) or (II). They can be easily synthesized from readily available raw materials and have no primary amino groups or only a low content of primary amino groups and thus exhibit hardly any blushing. Their viscosity is relatively low, compared with polyamine/polyepoxide adducts of the polyamine on which polyamine A1 is based. Thus epoxy resin compositions can be formulated that are free of benzyl alcohol and free of blushing.Type: GrantFiled: June 12, 2009Date of Patent: December 16, 2014Assignee: Sika Technology AGInventor: Pierre-Andre Butikofer
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Patent number: 8703844Abstract: A two-component epoxy resin composition, including: a resin component which includes at least one epoxy resin and at least one aldehyde, and a hardener component which includes at least one polyamine having at least one primary amino group.Type: GrantFiled: June 8, 2012Date of Patent: April 22, 2014Assignee: Sika Technology AGInventors: Urs Burckhardt, Ursula Stadelmann, Pierre-André Bütikofer
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Publication number: 20130261270Abstract: The present invention relates to novel polyamines having secondary amino groups, a process for producing them, adducts of these polyamines and their uses. The polyamines can be prepared in a simple way from readily available reactants. They and their adducts have, in particular, a low viscosity and are suitable as constituent of polyurethane and polyurea compositions having excellent processability and high flexibility, and also constituent of epoxy resin compositions, especially coatings.Type: ApplicationFiled: December 13, 2011Publication date: October 3, 2013Applicant: SIKA TECHNOLOGY AGInventors: Pierre-Andre Butikofer, Urs Burckhardt
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Patent number: 8524807Abstract: Compounds VB of the formula (I) or (II), said compounds being particularly suitable as curing agents for epoxide resins. The compounds can be produced easily and rapidly. They can be used in the form of aqueous curing agents and form stabile aqueous emulsions in particular. This facilitates the formulation of ECC compounds for use primarily as coatings.Type: GrantFiled: June 12, 2009Date of Patent: September 3, 2013Assignee: Sika Technology AGInventor: Pierre-André Bütikofer
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Patent number: 8399102Abstract: The current invention relates to a moisture-hardening composition that contains, in addition to a silane-functional polymer with end groups of formula (I), a reaction product that can be manufactured from an amino silane with primary amino groups and an alkene that is free of silane groups. The compositions are characterized by improved expandability with concurrent high reactivity, good adhesion characteristics, and high tear strength and are suited especially for use as elastic bonding substance or sealant.Type: GrantFiled: April 26, 2007Date of Patent: March 19, 2013Assignee: Sika Technology AGInventors: Marcel Oertli, Barbara Jucker, Ueli Pfenninger, Pierre-André Bütikofer
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Publication number: 20120270967Abstract: A two-component epoxy resin composition, including: a resin component which includes at least one epoxy resin and at least one aldehyde, and a hardener component which includes at least one polyamine having at least one primary amino group.Type: ApplicationFiled: June 8, 2012Publication date: October 25, 2012Applicant: SIKA TECHNOLOGY AGInventors: Urs BURCKHARDT, Ursula STADELMANN, Pierre-André BÜTIKOFER
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Patent number: 8293368Abstract: The invention relates to moisture-curable compositions that air provided with increased elasticity while having good mechanical properties and adhesion. Said compositions contain at least on silane-functional polymer A, at least one aminosilane AS2, and at least one ?-functional organodialkoxysilane at an amount of 0.6 to 5.0 parts by weight relative to 100 parts by weight of polymer A. Also disclosed are the production and use of the inventive compositions, especially as a sealant and adhesive.Type: GrantFiled: April 28, 2006Date of Patent: October 23, 2012Assignee: Sika Technology AGInventors: Barbara Jucker, Pierre-Andre Butikofer, Urs Burckhardt, Ueli Pfenninger
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Publication number: 20110166259Abstract: Compounds VB of the formula (I) or (II), said compounds being particularly suitable as curing agents for epoxide resins. The compounds can be produced easily and rapidly. They can be used in the form of aqueous curing agents and form stabile aqueous emulsions in particular. This facilitates the formulation of ECC compounds for use primarily as coatings.Type: ApplicationFiled: June 12, 2009Publication date: July 7, 2011Applicant: SIKA TECHNOLOGY AGInventor: Pierre-André Bütikofer
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Publication number: 20110082248Abstract: Polyamines A1 of formula (I) or (II). They can be easily synthesized from readily available raw materials and have no primary amino groups or only a low content of primary amino groups and thus exhibit hardly any blushing. Their viscosity is relatively low, compared with polyamine/polyepoxide adducts of the polyamine on which polyamine A1 is based. Thus epoxy resin compositions can be formulated which that are free of benzyl alcohol and free of blushing.Type: ApplicationFiled: June 12, 2009Publication date: April 7, 2011Applicant: SIKA TECHNOLOGY AGInventor: Pierre-Andre Butikofer
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Publication number: 20100159254Abstract: The current invention relates to a moisture-hardening composition that contains, in addition to a silane-functional polymer with end groups of formula (I), a reaction product that can be manufactured from an amino silane with primary amino groups and an alkene that is free of silane groups. The compositions are characterized by improved expandability with concurrent high reactivity, good adhesion characteristics, and high tear strength and are suited especially for use as elastic bonding substance or sealant.Type: ApplicationFiled: April 26, 2007Publication date: June 24, 2010Applicant: SIKA TECHNOLOGY AGInventors: Marcel Oertli, Barbara Jucker, Ueli Pfenninger, Pierre-Andre Butikofer
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Publication number: 20090075096Abstract: The present invention relates to organoalkoxysilanes containing a urea or thiourea or carbamate or thiocarbamate group of formula (I), as well as preparation and use thereof. It further relates to a composition containing the organoalkoxysilane of formula (I). Such compositions are especially suitable as adhesives and sealants, and have high stretchability and high strength.Type: ApplicationFiled: May 5, 2008Publication date: March 19, 2009Applicant: Sika Technology AGInventors: Pierre-Andre Butikofer, Barbara Jucker, Urs Burckhardt, Ueli Pfenninger
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Publication number: 20090075086Abstract: The invention relates to moisture-curable compositions that air provided with increased elasticity while having good mechanical properties and adhesion. Said compositions contain at least on silane-functional polymer A, at least one aminosilane AS2, and at least one ?-functional organodialkoxysilane at an amount of 0.6 to 5.0 parts by weight relative to 100 parts by weight of polymer A. Also disclosed are the production and use of the inventive compositions, especially as a sealant and adhesive.Type: ApplicationFiled: April 28, 2006Publication date: March 19, 2009Applicant: SIKA TECHNOLOGY AGInventors: Barbara Jucker, Pierre-Andre Butikofer, Urs Burckhardt, Ueli Pfenninger
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Publication number: 20070141361Abstract: The invention relates to a moisture-curing single-component composition which comprises at least one polymer that contains 3-(N-silylalkyl)-amino-propenoate groups and is described by formula (I). The inventive composition is useful as an adhesive, sealant, coating, or lining. Said polymer of formula (I) is characterized by a low viscosity, has a long shelf life in a moisture-free environment, and hardens when entering in contact with moisture so as to form a cross-linked polymer having elastic properties.Type: ApplicationFiled: December 18, 2003Publication date: June 21, 2007Applicant: Sika Technology AGInventors: Urs Burckhardt, Pierre-Andre Butikofer
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Patent number: 6136942Abstract: A one-component polyurethane composition is described that comprises a latent curing agent bonded to the prepolymer, from which curing agent aldehyde is liberated upon curing. Said aldehyde comprises two phenyl groups. By the specific design of the polyurethane composition, the application characteristics as well as the aging resistance of the cured polyurethane are improved.Type: GrantFiled: March 31, 1999Date of Patent: October 24, 2000Assignee: Sika AG, vorm. Kaspar Winkler & Co.Inventors: Ueli Pfenninger, Pierre-Andre Butikofer
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Patent number: 5475039Abstract: A curing agent for aqueous epoxy resin emulsions comprising 10-80% by weight of at least one emulsifier, 1-80% by weight of at least one coemulsifier, and 5-80% by weight of at least one bis(diamine)-diepoxide adduct. Optionally, the curing agent contains 0-80% by weight of a diamine or a mixture of two or more diamines.Type: GrantFiled: October 17, 1994Date of Patent: December 12, 1995Assignee: Sika AG, vorm. Kaspar Winkler & Co.Inventor: Pierre-Andre Butikofer
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Patent number: 5382606Abstract: A curing agent for aqueous epoxy resin emulsions is described, which curing agent contains 10-80% by weight of at least one emulsifier, 1-80% by weight of at least one coemulsifier, and 5-80% by weight of at least one bis(diamine)-diepoxide adduct. Optionally, the curing agent furthermore contains 0-80% by weight of a diamine or a mixture of two or more diamines. Said curing agent has the ability of forming microemulsions when water is added, preferably non-ionic oil-in-water microemulsions. Said microemulsions have a good shelf life. They are useful as curing agent for any desired aqueous epoxy resin dispersions, and they can also be used as curing agent in compositions based on epoxy resin and cement mortar.Type: GrantFiled: April 28, 1993Date of Patent: January 17, 1995Assignee: Sika AG, vorm. Kaspar Winkler & Co.Inventor: Pierre-Andre Butikofer