Patents by Inventor Urs Burckhardt

Urs Burckhardt 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).

  • Laminates Joined by Polyurethane Hot-Melt Adhesive and Process for Bonding Plasticizer-Containing Plastics
    Publication number: 20120107616
    Abstract: The present invention relates to laminates of a plasticizer-containing plastic, obtained by bonding by means of a moisture-reactive hot-melt adhesive which comprises at least one aldimine and at least one polyurethane polymer which contains isocyanate groups and is solid at room temperature. The bonded assembly is notable for improved adhesive, particularly following heat/moisture storage or alternating storage. Preferred embodiments of such laminates are bonded films or film-laminated supports, the film preferably being a pPVC film.
    Type: Application
    Filed: December 9, 2011
    Publication date: May 3, 2012
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Kai PASCHKOWSKI, Doreen JANKE, Urs BURCKHARDT, Mario SLONGO
  • Aldimine and composition containing aldimine
    Patent number: 8157950
    Abstract: Aldimines of Formula (I), which can be used as latent curing agents in curing compositions, for example, in moisture-curing polyurethane compositions that have isocyanate groups. The aldimines are compounds that can be liquid at room temperature, can have a hardly noticeable aldehyde odor before, during and after hydrolysis, and can have a long shelf life. An aldehyde in polyurethane compositions that is released during hydrolysis has only a slight softening effect and can exhibit very little tendency to migrate or exude.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: April 17, 2012
    Assignee: Sika Technology AG
    Inventor: Urs Burckhardt
  • COMPOSITION CONTAINING A SURFACE-DEACTIVATED POLYISOCYANATE AND CURING IN TWO STAGES
    Publication number: 20120045652
    Abstract: Single-component compositions are disclosed, which can be cured in two stages, wherein in the first curing stage, compositions pre-cured by means of moisture and having in particular plastic properties are formed, and wherein in the second curing stage, compositions cured by means of heat and having in particular elastic properties are formed. The two-stage compositions are suitable in particular as adhesives and have the great advantage that thanks to said two-stage compositions, an adhesive can be applied to a substrate, said adhesive cures by means of moisture in such a way that it can be handled and stored without problems, and said adhesive can be cured easily in an adhering step by means of heat only when needed.
    Type: Application
    Filed: March 31, 2010
    Publication date: February 23, 2012
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Alain Zahn, Michael Schlumpf, Urs Burckhardt
  • HOT CURING OR HEAT-ACTIVATED COMPOSITION CONTAINING A SURFACE-DEACTIVATED POLYISOCYANATE
    Publication number: 20120012251
    Abstract: The present invention relates to curable compositions comprising at least one specific blocked amine, at least one surface-deactivated polyisocyanate that is solid at ambient temperature and optionally water or a water-producing substance. Compositions of this type are characterized by an extremely high storage stability as long as they are not heated. Hot curing compositions that cure with the action of heat can thus be produced. Heat-activated compositions can also be produced. When heat is applied the latter compositions are not cured but are activated so that they are able to cure under the influence of moisture. The curable compositions are particularly suitable for use as adhesives.
    Type: Application
    Filed: March 31, 2010
    Publication date: January 19, 2012
    Applicant: Sika Technology AG
    Inventors: Urs Burckhardt, Peter Gimmnich
  • Moisture-hardened polyurethane compositions containing compounds comprising aldimine
    Patent number: 8088244
    Abstract: The invention relates to compositions which contain at least one isocyanate-containing polyurethane polymer P, which is produced from at least one polyisocyanate and at least one polyol, in addition to at least one aldimine-containing compound of formula (I). The compositions are stable during storage and harden quickly under the influence of moisture, are non-porous and do no not separate rich substances. Said compositions, the hardened compositions, and the resulting separated products are odor-less. The compositions can be used as an adhesive, sealant or coating which exhibit good mechanical properties and adhesion.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: January 3, 2012
    Assignee: Sika Technology AG
    Inventor: Urs Burckhardt
  • ALDIMINE AND COMPOSITION CONTAINING ALDIMINE
    Publication number: 20110253309
    Abstract: Aldimines of Formula (I), which can be used as latent curing agents in curing compositions, for example, in moisture-curing polyurethane compositions that have isocyanate groups. The aldimines are compounds that can be liquid at room temperature, can have a hardly noticeable aldehyde odor before, during and after hydrolysis, and can have a long shelf life. An aldehyde in polyurethane compositions that is released during hydrolysis has only a slight softening effect and can exhibit very little tendency to migrate or exude.
    Type: Application
    Filed: June 2, 2011
    Publication date: October 20, 2011
    Applicant: Sika Technology AG
    Inventor: Urs BURCKHARDT
  • HYDROXYALDIMINE-CONTAINING POLYURETHANE COMPOSITION
    Publication number: 20110214810
    Abstract: A composition that includes aldimines of Formula (I). The composition can be a two-component polyurethane composition. The composition can have a long open time, but build up an early strength quickly, and in the cured state can have high tensile strength and a high modulus of elasticity. The composition can be odorless or at least low-odor before, during and after curing.
    Type: Application
    Filed: May 16, 2011
    Publication date: September 8, 2011
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Urs BURCKHARDT, Ursula Stadelmann
  • Moisture-curing compositions containing silane-functional polymers and aminosilane adducts with good adhesive properties
    Patent number: 8012302
    Abstract: Moisture-curing compositions include at least one silane-functional polymer P with at least two terminal groups of formula (I) and at least one reaction product R which is produced from at least one aminosilane AS with at least one primary amino group and at least one silane group-free alkene M which is capable of entering in 1,4 addition reactions with primary amino groups. The compositions have improved adhesive properties and are especially suitable for use as adhesives, sealing materials or coatings, especially as elastic adhesive or sealing materials.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: September 6, 2011
    Assignee: Sika Technology AG
    Inventors: Barbara Jucker, Marcel Oertli, Pierre-André Buetikofer, Urs Burckhardt
  • POLYURETHANE COMPOSITION THAT CONTAINS ORGANOMETHOXYSILANE AND HAS ANISOTROPIC MATERIAL PROPERTIES
    Publication number: 20110198031
    Abstract: A single-component, moisture-curing composition, including at least one polyisocyanate, a polyaldimine, an organomethoxysilane, an acid as well as a tin catalyst in special proportions that can be matched to one another. An exemplary composition cures by moisture as much as possible without forming bubbles. In the curing of the composition by atmospheric humidity, an anisotropic material is produced with a predominantly elastic sheath that is virtually tack-free on the surface and a predominantly plastic core. An exemplary composition can be especially well suited as a flexible sealant.
    Type: Application
    Filed: April 27, 2011
    Publication date: August 18, 2011
    Applicant: SIKA TECHNOLOGHY AG
    Inventor: Urs BURCKHARDT
  • POLYURETHANE COMPOSITION THAT CONTAINS ALPHA-SILANE AND THAT HAS ANISOTROPIC MATERIAL PROPERTIES
    Publication number: 20110198030
    Abstract: A single-component, moisture-curing composition, including at least one polyisocyanate, a polyaldimine, an ?-functional organoalkoxysilane, and an acid in special proportions that can be matched to one another. An exemplary composition cures by moisture as much as possible without forming bubbles. In the curing of the composition by atmospheric humidity, an anisotropic material is produced with a predominantly elastic sheath that is virtually tack-free on the surface and a predominantly plastic core. An exemplary composition can be especially well suited as a flexible sealant.
    Type: Application
    Filed: April 27, 2011
    Publication date: August 18, 2011
    Applicant: SIKA TECHNOLOGY AG
    Inventor: Urs BURCKHARDT
  • ALDEHYDES CONTAINING HYDROXL GROUPS
    Publication number: 20110195242
    Abstract: The present invention relates to aldehydes of the formula (I) which contain tertiary amino groups and at least one hydroxyl group. Aldehydes of this kind can be utilized broadly. Aldehydes of particular advantage can be incorporated into a polymer, and find use as curing agents and/or catalysts.
    Type: Application
    Filed: August 29, 2008
    Publication date: August 11, 2011
    Applicant: SIKA TECHNOLOGY AG
    Inventor: Urs Burckhardt
  • Aldiminoalkylsilanes
    Patent number: 7906673
    Abstract: The invention relates to aldiminoalkylsilanes ALS which are preparable from the reaction of at least one aminoalkylsilane AS of the formula (I) and at least one aldehyde ALD of the formula (II), and to processes for preparing them. Additionally disclosed are the use of these aldiminoalkylsilanes in compositions comprising amine-reactive compounds, especially polyurethane compositions, and also in adhesion promoter compositions. The aldiminoalkylsilanes ALS and the compositions comprising them have the great advantage that they are low in odor or odorless and also stable on storage.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: March 15, 2011
    Assignee: Sika Technology AG
    Inventor: Urs Burckhardt
  • Fastening element for fastening to a base body and method for fastening said fastening element
    Publication number: 20110042002
    Abstract: The invention relates to a fixing element for fixing to a base body, in particular to building surfaces comprising a support and an reactive adhesive.
    Type: Application
    Filed: March 29, 2005
    Publication date: February 24, 2011
    Inventors: Norman Blank, Juergen Finter, Urs Burckhardt
  • Moisture-curing compositions containing silane-functional polymers with good adhesive properties
    Patent number: 7867619
    Abstract: Moisture-curing compositions include at least one silane-functional polymer P with at least two terminal groups of formula (I), at least one aminosilane AS and at least one (meth)acrylsilane or anhydriodosilane of formula (II). The compositions have improved adhesive properties and are especially suitable for use as adhesives, sealing materials or coatings, especially as elastic adhesive or sealing materials.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: January 11, 2011
    Assignee: SIKA Technology AG
    Inventors: Barbara Jucker, Urs Burckhardt, Ueli Pfenninger
  • USE OF CARBOXYLIC ACID HYDRAZIDE FOR DE-BONDING POLYURETHANE ADHESIVES
    Publication number: 20100323202
    Abstract: This disclosure relates to the use of carboxylic acid hydrazide for de-bonding (e.g., detaching) polyurethane adhesives. The carboxylic acid hydrazide is present in the polyurethane adhesive as a solid in free form and is thus not incorporated in the polymer. When the adhesive is heated to a temperature of at least 80° C., the polymer is thermally degraded. With such an adhesive, components that are bonded in such a way can be detached in a simple method, by which the repair, the use or the recycling of the components is more easily possible.
    Type: Application
    Filed: June 21, 2010
    Publication date: December 23, 2010
    Applicant: Sika Technology AG
    Inventors: Urs BURCKHARDT, Andreas Kramer
  • MOISTURE-CURING HOT-MELT ADHESIVE COMPOUND CONTAINING POLYALDIMINE
    Publication number: 20100291368
    Abstract: The present invention relates to moisture-reactive hot-melt adhesive compounds, comprising at least one polyurethane polymer P which is solid at room temperature and which has isocyanate groups, at least one polyaldimine ALD of the formula (Ia) or (Ib), and at least one acid K in the form of an organic monocarbon acid, or dicarbon acid, or an organic monosulphonic acid, or disulphonic acid, or a compound which can be hydrolyzed to give one of these acids. These hot-melt adhesive compounds cure without bubbles and exhibit exceptionally quick crosslinking speed and good strength after crosslinking.
    Type: Application
    Filed: November 16, 2007
    Publication date: November 18, 2010
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Urs Burckhardt, Kai Paschkowski, Martin Linnenbrink, Sven Rosenau
  • PRIMER COMPOSITION CONTAINING ALDIMINE
    Publication number: 20100279121
    Abstract: The invention relates to the use of compositions containing a polyaldimine ALD of formula (I) as primers for adhesives or sealants. It turned out that said primers accelerate adhesion especially in winter weather without reducing the open time of the primer. Said accelerated adhesion is particularly important for fast-curing polyurethane adhesives or sealants.
    Type: Application
    Filed: December 19, 2008
    Publication date: November 4, 2010
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Urs Burckhardt, Wolf-Rüdiger Huck, Jolanda Sutter
  • CURABLE COMPOSITIONS HAVING LESS VOLATILIZATION
    Publication number: 20100273924
    Abstract: The invention particularly relates to curable compositions comprising at least one polyisocyanate, at least one amine that is blocked by means of aldehyde or ketone, and at least one carboxylic acid hydrazide or sulfonic acid hydrazide which has a minimum melting point of 100° C., especially at least 150° C. Surprisingly, after being cured using moisture at room temperature and when being heated to increased temperatures, significantly fewer volatile components of such compositions volatilize than in the corresponding compositions that do not contain said hydrazide.
    Type: Application
    Filed: December 19, 2008
    Publication date: October 28, 2010
    Applicant: SIKA Technology AG
    Inventor: Urs Burckhardt
  • POLYURETHANE POLYMER FOR REVERSIBLE ADHESIVE BONDS
    Publication number: 20100273008
    Abstract: A polyurethane polymer which has sterically hindered urea groups which lead to the effect that the polyurethane has thermal lability at these sites. The invention further relates to a composition for preparing such a polyurethane polymer, said composition being suitable for the production of reversible adhesive bonds, seals and coatings. An inventive polyurethane polymer, or the corresponding composition for production thereof, finds use especially in automobile construction, where the possibility of detaching adhesive-bonded components and window panes is of significance for dismantling for repair purposes or else for utilization and recycling of used and accident-damaged automobiles.
    Type: Application
    Filed: November 21, 2008
    Publication date: October 28, 2010
    Applicant: SIKA Technology AG
    Inventor: Urs Burckhardt
  • AROMATIC ALDIMINES AND POLYURETHANE COMPOSITIONS WHICH CONTAIN ALDIMINE
    Publication number: 20100255314
    Abstract: The present invention relates to aromatic aldimines, which are based on primary aromatic polyamines, which are solid at room temperature and liquid at room temperature and which have the lowest possible viscosity, hydrolyze with little odor, and can be used as blocked amines in curable compositions, in particular in compositions having one-component and two-component isocyanate groups. Said compositions have a relatively long open time, but cure surprisingly rapidly, said curing occurring without strong odor formation and without bubbling. In addition, the compositions have outstanding mechanical properties after curing, in particular high strength with high ductility, and good resistance to heat and moisture.
    Type: Application
    Filed: November 13, 2008
    Publication date: October 7, 2010
    Applicant: SIKA TECHNOLOGY AG
    Inventor: Urs Burckhardt