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).

  • Patent number: 10995074
    Abstract: An amidine containing at least one structural unit of the formula (I) and the use thereof as catalyst for the crosslinking of a functional compound, especially of a polymer having silane groups. The amidine is preparable in a simple process from readily available starting materials, is largely odorless at room temperature and is of low toxicity. It accelerates the crosslinking of functional compounds surprisingly efficiently and can be adjusted for optimal compatibility with different compositions via the radical to which the structural units of the formula (I) is bonded, which means that such compositions do not have a tendency to migration-related defects such as separation, exudation or substrate soiling.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: May 4, 2021
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Rita Cannas, Urs Burckhardt
  • Patent number: 10941164
    Abstract: An aldiminosilane of the formula (I), to the use thereof as adhesion promoters and/or crosslinking agents, and to curable compositions including same. The aldiminosilane of the formula (I) is odorless, pH-neutral, liquid at room temperature, and has a low sensitivity to heat. The hydrolysis of the aldiminosilane proceeds relatively slowly, and the aldiminosilane is highly effective as an adhesion promoter. Furthermore, the aldiminosilane exhibits excellent compatibility with curable compositions based on isocyanates, epoxides, or silanes, whereby such compositions do not exhibit a propensity for migration effects such as bleeding or substrate soiling after being cured. In particular, isocyanate group-containing compositions containing the aldiminosilane of the formula (I) are highly storage-stable regardless of the storage temperature and the isocyanate used.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: March 9, 2021
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Urs Burckhardt, Andreas Kramer
  • Patent number: 10899926
    Abstract: A composition including at least one polymer containing silane groups, at least one epoxy resin, and at least one amine of the formula (I). The composition is low in odor, low in toxicity, and highly workable. It enables low-emission products which cure rapidly at ambient temperature to form macroscopically homogeneous films or bodies having good mechanical properties, high thermal stability and good adhesion properties, the mechanical properties being able to be adjusted from very elastic through to tough elastic. The composition is especially suitable as adhesive and/or sealant or coating.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: January 26, 2021
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Edis Kasemi, Andreas Kramer, Ursula Stadelmann, Urs Burckhardt, Hans Häberle, Steffen Kelch
  • Patent number: 10836868
    Abstract: A conversion product which has at least one aliphatic amidine or guanidine group and at least one polysiloxane radical, and the use of the conversion product as a catalyst for cross-linking hardenable compositions, in particular based on polymers containing silane groups. The conversion product is largely odor-free, non-volatile, and of low toxicity. The conversion product accelerates the cross-linking of such compositions surprisingly well, does not impair the stability of such compositions in storage, and is very highly compatible, which means that such compositions do not tend toward separation or migration or evaporation of the catalyst.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: November 17, 2020
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Rita Cannas, Urs Burckhardt
  • Publication number: 20200354584
    Abstract: A composition, including at least one silane group-containing polymer that is liquid at room temperature, at least one epoxide liquid resin, and at least one aliphatic polyamine having a molecular weight of at least 115 g/mol and having at least three amine hydrogens reactive toward epoxide groups. The composition is a liquid that is configured to form a sealing membrane after curing. The sealing film applied in liquid form is isocyanate-free, low-odor, and easy to process because of the low viscosity and the long open time. The sealing film cures quickly and forms a high-quality elastic material having good mechanical properties and good weather resistance.
    Type: Application
    Filed: July 28, 2020
    Publication date: November 12, 2020
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Hans HÄBERLE, Urs BURCKHARDT
  • Patent number: 10759946
    Abstract: A composition, comprising at least one silane-group-containing polymer that is liquid at room temperature, at least one epoxide liquid resin, and at least one aliphatic polyamine having a molecular weight of at least 115 g/mol and having at least three amine hydrogens reactive toward epoxide groups, as a sealing film applied in liquid form. The sealing film applied in liquid form is isocyanate-free, low-odor, and easy to process because of the low viscosity and the long open time. Said sealing film cures quickly and forms a high-quality elastic material having good mechanical properties and good weather resistance.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: September 1, 2020
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Hans Häberle, Urs Burckhardt
  • Publication number: 20200231548
    Abstract: The present invention relates to an amidine of the formula (I) and its use as a catalyst for crosslinking a curable composition. The amidine of the formula (I) contains at least one aliphatic amidine group. It is substantially odorless and nonvolatile at room temperature and accelerates the crosslinking of curable compositions very efficiently, without impairing the storage stability of the compositions. It is particularly suitable for compositions based on polymers containing silane groups, with which it is compatible, as a result of which such compositions do not have a tendency to separation or migration or evaporation of the catalyst.
    Type: Application
    Filed: April 8, 2020
    Publication date: July 23, 2020
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Rita CANNAS, Urs BURCKHARDT
  • Publication number: 20200207980
    Abstract: A polyurethane composition including a first and a second component, wherein the first component is a polyol with an OH functionality in the range from 1.5 to 4 and a mean molecular weight in the range from 250 to 15,000 g/mol, a diol with two hydroxyl groups which are linked via a C2 to C0 carbon chain, and a compound that includes at least one thiol group. One of the two components also additionally contains at least one metal catalyst for the reaction of hydroxyl groups and isocyanate groups which can form thio complexes, and the second component contains enough polyisocyanate that at least 5% by weight of isocyanate groups, in relation to the total polyurethane composition, are contained, and the molar ratio of all thiol groups of the mentioned compound to all metal atoms of the metal catalyst is between 1:1 and 250:1.
    Type: Application
    Filed: June 29, 2018
    Publication date: July 2, 2020
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Urs BURCKHARDT, Michael SCHLUMPF, Antonio CORSARO
  • Patent number: 10662280
    Abstract: An amine of formula (I) in a curing agent for epoxy resins, a curing agent for epoxy resins containing the amine of formula (I) and resultant epoxy resin compositions which can be used particularly as low-emission room-temperature-curing epoxy resin coatings demonstrating good workability, rapid curing, a high degree of hardness and high surface quality. The amine of formula (I) is low-odour, can be handled well at room temperature even without dilution, and can be produced at high purity in a simple process.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: May 26, 2020
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Urs Burckhardt, Ursula Stadelmann, Andreas Kramer, Edis Kasemi
  • Publication number: 20200148707
    Abstract: An aldiminosilane of the formula (I), to the use thereof as adhesion promoters and/or crosslinking agents, and to curable compositions including same. The aldiminosilane of the formula (I) is odorless, pH-neutral, liquid at room temperature, and has a low sensitivity to heat. The hydrolysis of the aldiminosilane proceeds relatively slowly, and the aldiminosilane is highly effective as an adhesion promoter. Furthermore, the aldiminosilane exhibits excellent compatibility with curable compositions based on isocyanates, epoxides, or silanes, whereby such compositions do not exhibit a propensity for migration effects such as bleeding or substrate soiling after being cured. In particular, isocyanate group-containing compositions containing the aldiminosilane of the formula (I) are highly storage-stable regardless of the storage temperature and the isocyanate used.
    Type: Application
    Filed: June 19, 2018
    Publication date: May 14, 2020
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Urs BURCKHARDT, Andreas KRAMER
  • Patent number: 10647807
    Abstract: A polyaldimine of the formula (I) with advantageous properties in use as latent hardener for compositions including isocyanate groups, and compositions containing the polyaldimine of the formula (I) and at least one polyisocyanate and/or at least one polyurethane polymer containing isocyanate groups. The polyaldimine of the formula (I) is odourless, pH-neutral, liquid at room temperature, has low viscosity, has little sensitivity to heat and moisture, and is stable in storage together with isocyanates. It can provide odourless single-component polyurethane compositions which have good stability in storage and which do not produce bubbles when hardened in the presence of moisture, and which cause no problematic odour emissions, giving a hardened elastic material with good mechanical properties and surprisingly little tendency towards plasticizer migration.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: May 12, 2020
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Urs Burckhardt, Andreas Kramer
  • Patent number: 10647681
    Abstract: The present invention relates to an amidine of the formula (I) and its use as a catalyst for crosslinking a curable composition. The amidine of the formula (I) contains at least one aliphatic amidine group. It is substantially odorless and nonvolatile at room temperature and accelerates the crosslinking of curable compositions very efficiently, without impairing the storage stability of the compositions. It is particularly suitable for compositions based on polymers containing silane groups, with which it is compatible, as a result of which such compositions do not have a tendency to separation or migration or evaporation of the catalyst.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: May 12, 2020
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Rita Cannas, Urs Burckhardt
  • Publication number: 20200140599
    Abstract: A compound of formula (I) having advantageous properties when used as a latent curing agent for compositions containing isocyanate groups, and to compositions containing the compound of formula (I). The compound of formula (I) is odourless, is liquid and has comparatively low viscosity at room temperature and is stable in storage together with isocyanates. It makes possible odourless single-component polyurethane compositions which have good stability in storage, do not produce bubbles when cured in the presence of moisture, and cause no problematic odour emissions, giving a cured elastic material having good mechanical properties, good heat stability, a surprisingly non-adhesive surface and little tendency towards plasticizer migration.
    Type: Application
    Filed: June 19, 2018
    Publication date: May 7, 2020
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Urs BURCKHARDT, Andreas KRAMER
  • Patent number: 10584268
    Abstract: The invention relates to the use of an epoxy resin composition, containing at least one reaction product from the reaction of at least one amine of formula (I) with at least one carbonyl compound of formula (II) and hydrogen, as a cold curing primer or adhesive. Primers or adhesives of this type cure rapidly and trouble-free at ambient temperature, even at cold temperatures such as 10 or 5° C., suffer remarkably little yellowing and are free from toxic phenol compounds such as phenol, tert-butylphenol or nonylphenol. The primer has a particularly low viscosity and is particularly suitable for priming porous mineral substrates.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: March 10, 2020
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Edis Kasemi, Andreas Kramer, Ursula Stadelmann, Urs Burckhardt
  • Publication number: 20200048189
    Abstract: A guanidine of the formula (I) and to the use thereof as catalyst for the crosslinking of a functional compound, especially a polymer having silane groups. The guanidine of the formula (I) described is preparable in a simple method via a polyfunctional carbodiimide adduct from the readily available raw materials, and is largely odorless at room temperature and of low toxicity. In spite of its comparatively high molecular weight, it accelerates the crosslinking of functional compounds surprisingly well, and such compositions do not have a tendency to migration-related defects such as separation, exudation or substrate soiling.
    Type: Application
    Filed: March 14, 2018
    Publication date: February 13, 2020
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Rita CANNAS, Urs BURCKHARDT
  • Publication number: 20200040218
    Abstract: A coating composition including at least one water-based anionic polyurethane dispersion and 0.1 to 4 weight-% of nanoparticulate TiO2 having an average particle size of not more than 100 nm, based on the solids content of the coating composition. The cured coating composition is suitable as a top coat in a decorative multilayer coating system including at least one polyurethane base coat. The multilayer coating system exhibits improved non-yellowing property and cleanability. The liquid multilayer coating system is particularly suitable for balcony applications.
    Type: Application
    Filed: January 26, 2018
    Publication date: February 6, 2020
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Arpan PATEL, Stephen GLOVER, Mark GATRELL, Michael BYRNE, Daniel BREARLEY, Urs BURCKHARDT
  • Publication number: 20200040215
    Abstract: A process for preparing a curing agent for epoxy resins, in which an amine mixture including at least one parent amine of the formula (I) and at least one alkylated amine of the formula (II) is reacted or adducted with at least one glycidyl ether of the formula (III). The amine mixture is especially a reaction mixture from the partial alkylation of the amine of the formula (I). The process described enables, with low energy expenditure and high space-time yield, curing agents of low odor, low toxicity, low viscosity and high reactivity for epoxy resins and epoxy resin products that cure rapidly at ambient temperatures and especially also under cold conditions and at the same time enable high-quality coatings having an even, shiny surface.
    Type: Application
    Filed: March 13, 2018
    Publication date: February 6, 2020
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Edis KASEMI, Andreas KRAMER, Ursula STADELMANN, Urs BURCKHARDT
  • Publication number: 20200017629
    Abstract: A curing agent for epoxy resins, containing at least one amine adduct of formula (I) which can be obtained as an addition product of a mixture of a primary diamine, a monoalkylated other diamine and a polyepoxide. The curing agent makes it possible to produce low-odor, low-emission epoxy resin products, in particular coatings, which have a surprisingly low viscosity, a high curing rate, a high final hardness, and a surprisingly appealing surface.
    Type: Application
    Filed: March 13, 2018
    Publication date: January 16, 2020
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Edis KASEMI, Andreas KRAMER, Ursula STADELMANN, Urs BURCKHARDT
  • Patent number: 10494552
    Abstract: A moisture-curing adhesive composition has a) at least one polyurethane polymer having isocyanate groups, b) at least a silane adhesion promoter, c) at least one amine catalyst, and d) at least one chelate complexing agent. Compositions are suitable especially as adhesive or sealant, in particular for glass panes, for example in vehicle construction or vehicle repair, wherein the use of a primer or activator can be dispensed with.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: December 3, 2019
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Alain Zahn, Michael Schlumpf, Urs Burckhardt
  • Patent number: 10487237
    Abstract: The present invention describes a one-part moisture-curing liquid-applied waterproofing membrane having a polyurethane polymer, a long-chain aldimine and a hardener selected from an oxazolidine and another aldimine. The membrane has a low viscosity at low solvent content and a good shelf life stability and cures fast to form a solid elastic material. The membrane is particularly suitable for roofing applications, possessing high strength, high elongation and good durability under outdoor weathering conditions in a broad temperature range.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: November 26, 2019
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Urs Burckhardt, Ursula Stadelmann, Hans Haberle, Michael Byrne, Mark Gatrell, Alexander Coward