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).

  • Patent number: 9334433
    Abstract: 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: Grant
    Filed: February 22, 2013
    Date of Patent: May 10, 2016
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Marcel Oertli, Barbara Jucker, Ueli Pfenninger, Pierre-Andre Butikofer
  • Publication number: 20150368509
    Abstract: 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: Application
    Filed: August 28, 2015
    Publication date: December 24, 2015
    Inventors: Pierre-Andre BUTIKOFER, Urs BURCKHARDT
  • Patent number: 8912294
    Abstract: 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: Grant
    Filed: June 12, 2009
    Date of Patent: December 16, 2014
    Assignee: Sika Technology AG
    Inventor: Pierre-Andre Butikofer
  • Patent number: 8703844
    Abstract: 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: Grant
    Filed: June 8, 2012
    Date of Patent: April 22, 2014
    Assignee: Sika Technology AG
    Inventors: Urs Burckhardt, Ursula Stadelmann, Pierre-André Bütikofer
  • Publication number: 20130261270
    Abstract: 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: Application
    Filed: December 13, 2011
    Publication date: October 3, 2013
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Pierre-Andre Butikofer, Urs Burckhardt
  • Patent number: 8524807
    Abstract: 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: Grant
    Filed: June 12, 2009
    Date of Patent: September 3, 2013
    Assignee: Sika Technology AG
    Inventor: Pierre-André Bütikofer
  • Patent number: 8399102
    Abstract: 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: Grant
    Filed: April 26, 2007
    Date of Patent: March 19, 2013
    Assignee: Sika Technology AG
    Inventors: Marcel Oertli, Barbara Jucker, Ueli Pfenninger, Pierre-André Bütikofer
  • Publication number: 20120270967
    Abstract: 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: Application
    Filed: June 8, 2012
    Publication date: October 25, 2012
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Urs BURCKHARDT, Ursula STADELMANN, Pierre-André BÜTIKOFER
  • Patent number: 8293368
    Abstract: 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: Grant
    Filed: April 28, 2006
    Date of Patent: October 23, 2012
    Assignee: Sika Technology AG
    Inventors: Barbara Jucker, Pierre-Andre Butikofer, Urs Burckhardt, Ueli Pfenninger
  • Publication number: 20110166259
    Abstract: 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: Application
    Filed: June 12, 2009
    Publication date: July 7, 2011
    Applicant: SIKA TECHNOLOGY AG
    Inventor: Pierre-André Bütikofer
  • Publication number: 20110082248
    Abstract: 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: Application
    Filed: June 12, 2009
    Publication date: April 7, 2011
    Applicant: SIKA TECHNOLOGY AG
    Inventor: Pierre-Andre Butikofer
  • Publication number: 20100159254
    Abstract: 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: Application
    Filed: April 26, 2007
    Publication date: June 24, 2010
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Marcel Oertli, Barbara Jucker, Ueli Pfenninger, Pierre-Andre Butikofer
  • Publication number: 20090075096
    Abstract: 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: Application
    Filed: May 5, 2008
    Publication date: March 19, 2009
    Applicant: Sika Technology AG
    Inventors: Pierre-Andre Butikofer, Barbara Jucker, Urs Burckhardt, Ueli Pfenninger
  • Publication number: 20090075086
    Abstract: 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: Application
    Filed: April 28, 2006
    Publication date: March 19, 2009
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Barbara Jucker, Pierre-Andre Butikofer, Urs Burckhardt, Ueli Pfenninger
  • Publication number: 20070141361
    Abstract: 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: Application
    Filed: December 18, 2003
    Publication date: June 21, 2007
    Applicant: Sika Technology AG
    Inventors: Urs Burckhardt, Pierre-Andre Butikofer
  • Patent number: 6136942
    Abstract: 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: Grant
    Filed: March 31, 1999
    Date of Patent: October 24, 2000
    Assignee: Sika AG, vorm. Kaspar Winkler & Co.
    Inventors: Ueli Pfenninger, Pierre-Andre Butikofer
  • Patent number: 5475039
    Abstract: 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: Grant
    Filed: October 17, 1994
    Date of Patent: December 12, 1995
    Assignee: Sika AG, vorm. Kaspar Winkler & Co.
    Inventor: Pierre-Andre Butikofer
  • Patent number: 5382606
    Abstract: 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: Grant
    Filed: April 28, 1993
    Date of Patent: January 17, 1995
    Assignee: Sika AG, vorm. Kaspar Winkler & Co.
    Inventor: Pierre-Andre Butikofer