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).
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Patent number: 10442956Abstract: The present disclosure relates to a two-component composition containing a polymer polyol, a dial chain extender, an aldimine of formula (I), optionally additional polyols and diphenylmethandiisocyanates in the two components. The composition is particularly suitable as a manually applicable solvent-free liquid film for coating and/or sealing floors and roofs. It also has a long open time, cures quickly and without complications in a wide temperature and humidity range, has a high level of strength and is weather resistant.Type: GrantFiled: September 12, 2016Date of Patent: October 15, 2019Assignee: SIKA TECHNOLOGY AGInventors: Hans Häberle, Urs Burckhardt, Ursula Stadelmann
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Patent number: 10428252Abstract: A two-component composition, containing at least one silane-group-containing polymer that is liquid at room temperature, at least one epoxide liquid resin, at least one polyetheramine, and at least one aminosilane or mercaptosilane. The composition has low odor, cures quickly and without blistering at room temperature, and, when cured, forms a tough elastic material of high strength, high adhesive force, and good thermal resistance that has no tendency toward yellowing or substrate discoloration. The composition is excellently suitable as a tough elastic adhesive for structural adhesive joints in the field of construction and in industrial production.Type: GrantFiled: September 25, 2015Date of Patent: October 1, 2019Assignee: SIKA TECHNOLOGY AGInventors: Urs Burckhardt, Steffen Kelch, Ursula Stadelmann
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Patent number: 10414875Abstract: The use of a catalyst of the formula (I) for the crosslinking of a curable composition. The catalyst of the formula (I) contains at least one aliphatic guanidine group. It is substantially odorless and nonvolatile at room temperature and accelerates the crosslinking of curable compositions very efficiently, without impairing the storage stability thereof. It is particularly suitable for compositions based on polymers containing silane groups, where it has very good compatibility, as a result of which such compositions do not have a tendency to separation or migration or evaporation of the catalyst.Type: GrantFiled: May 10, 2016Date of Patent: September 17, 2019Assignee: SIKA TECHNOLOGY AGInventors: Rita Cannas, Urs Burckhardt
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Patent number: 10415250Abstract: The present invention describes a one-part moisture-curing liquid-applied waterproofing membrane including a polyurethane polymer and both an aldimine and an oxazolidine as blocked amine hardeners in a specific ratio range. The membrane has a low odor, a long shelf life stability, a low viscosity at low solvent content, a sufficiently long open time to allow hand application and cures fast to a solid elastic material. The liquid-applied waterproofing membrane can be suitable for roofing applications, possessing high strength, high elongation and good durability under outdoor weathering conditions in a broad temperature range.Type: GrantFiled: January 21, 2014Date of Patent: September 17, 2019Assignee: SIKA TECHNOLOGY AGInventors: Michael Byrne, Mark Gatrell, Alexander Coward, Urs Burckhardt
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Publication number: 20190276412Abstract: 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: ApplicationFiled: December 12, 2017Publication date: September 12, 2019Applicant: SIKA TECHNOLOGY AGInventors: Rita CANNAS, Urs BURCKHARDT
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Patent number: 10407533Abstract: A polymer preparation consisting of silane-functional polymers, including at least one polymer having at least one terminal group of formula (I) and at least one further silane terminal group, a method for producing the polymer preparation and a composition containing it. The polymer preparation has a surprisingly low viscosity, cross-links surprisingly quickly even without the use of EHS-critical catalysts such as organotin compounds or DBU, and hardens into a non-sticky material with good strength and elasticity. It is especially well suited as an elastic adhesive or sealant or as an elastic coating. The invention further relates to a method for lowering the viscosity of a polymer having at least one terminal group of formula (I) by introducing at least one further silane terminal group.Type: GrantFiled: November 23, 2015Date of Patent: September 10, 2019Assignee: SIKA TECHNOLOGY AGInventors: Andreas Kramer, Urs Burckhardt
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Patent number: 10392480Abstract: The use of an amidine of formula (I) and/or a conversion product thereof as a catalyst for the crosslinking of a composition based on silane group-containing polymers. The amidine of formula (I) and the conversion products thereof are essentially odorless at room temperature and non-volatile and accelerate the crosslinking of the composition very well without impairing the storage stability of the composition, and are very compatible in the composition. As a result, the compositions do not have a tendency to separate, migrate or evaporate the catalyst.Type: GrantFiled: April 15, 2016Date of Patent: August 27, 2019Assignee: SIKA TECHNOLOGY AGInventors: Rita Cannas, Urs Burckhardt
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Publication number: 20190240649Abstract: A compound containing at least one hexahydrotriazine unit of formula (I) having at least one amidine or guanidine group and to the use thereof as a catalyst for the crosslinking of a functional compound, in particular a polymer including silane groups. The compound contains at least one hexahydrotriazine unit of formula (I) is producible in a simple process from readily available feedstocks, odorless at room temperature, non-volatile and largely non-toxic. The compound accelerates the crosslinking of functional polymers surprisingly well and by simple variation of the substituents is variable such that it has very good compatibility in different polymers as a result of which such compositions do not have a propensity for migration-based defects such as separation, exudation or substrate contamination.Type: ApplicationFiled: July 17, 2017Publication date: August 8, 2019Applicant: SIKA TECHNOLOGY AGInventors: Rita CANNAS, Urs BURCKHARDT
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Publication number: 20190203056Abstract: 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: ApplicationFiled: February 14, 2017Publication date: July 4, 2019Applicant: SIKA TECHNOLOGY AGInventors: Hans HÄBERLE, Urs BURCKHARDT
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Publication number: 20190177472Abstract: A curing agent for epoxy resin compositions containing at least one amine of formula (I) and at least one amine of formula (II). The curing agent is a low-odor, low-viscosity, low-toxicity curing agent and has a low propensity for carbamatization and a high reactivity toward epoxy resins. It enables low-odor and low-emission epoxy resin products which are readily processable and which even at low temperatures and high humidities undergo rapid and problem-free curing to afford high-quality plastics having a high hardness and a regular, non-tacky surface with high gloss.Type: ApplicationFiled: February 14, 2017Publication date: June 13, 2019Applicant: SIKA TECHNOLOGY AGInventors: Edis KASEMI, Andreas KRAMER, Ursula STADELMANN, Urs BURCKHARDT
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Publication number: 20190169354Abstract: A two-component polyurethane composition containing at least 55% by weight of polybutadiene polyols based on the total amount of all polyols having an average molecular weight of at least 500 g/mol, and at least one latent hardener, where the ratio of the number of reactive groups in the latent hardener to the number of OH groups present is in the range from 0.02 to 0.4. The composition has a long open time, blister-free curing, a very low glass transition temperature, high elasticity and surprisingly high strength which is very constant over a wide temperature range. Furthermore, it has very good adhesion to metallic and nonmetallic substrates, causing barely any stress cracks on glassy thermoplastics.Type: ApplicationFiled: July 28, 2017Publication date: June 6, 2019Applicant: SIKA TECHNOLOGY AGInventors: Steffen KELCH, Urs BURCKHARDT
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Patent number: 10301423Abstract: An amine of the formula (I) for use as hardener for epoxy resins, hardeners for epoxy resins containing the amine of the formula (I) and resultant epoxy resin compositions which more particularly can be used as low-emission room-temperature-curing epoxy-resin coatings with high hardness and surface quality. The amine of the formula (I) has little odor and is a very successful diluent for epoxy resin compositions. It is more particularly obtained by reductive alkylation from 1,2-propylenediamine and an aldehyde or ketone.Type: GrantFiled: August 7, 2015Date of Patent: May 28, 2019Assignee: SIKA TECHNOLOGY AGInventors: Edis Kasemi, Andreas Kramer, Ursula Stadelmann, Urs Burckhardt
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Patent number: 10301422Abstract: A composition containing two different silane-functional polymers, only one of the two polymers having terminal groups of formula (I). The composition has a surprisingly rapid skin forming time and low viscosity, crosslinks quickly even without the use of EHS-critical catalysts such as organotin compounds or DBU, and cures to a non-sticky material with good strength and elasticity. Also relates to a method for accelerating the curing of a silane-crosslinking composition by adding to it a further silane-functional polymer having terminal groups of formula (I).Type: GrantFiled: November 23, 2015Date of Patent: May 28, 2019Assignee: SIKA TECHNOLOGY AGInventors: Andreas Kramer, Urs Burckhardt
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Patent number: 10287388Abstract: An amine of the formula (I) and a process for its preparation by reductive alkylation of 1,2-propylenediamine with a di- or trifunctional carbonyl compound and hydrogen. The amine of the formula (I) is low in viscosity and in odour, high in reactivity towards epoxides and outstanding in its compatibility with other amines and with epoxy resins. The amine of the formula (I) allows access to low-emission epoxy resin compositions which have good processing qualities, cure rapidly even at low temperatures and form high-quality, high-hardness plastics having an attractive surface.Type: GrantFiled: August 7, 2015Date of Patent: May 14, 2019Assignee: SIKA TECHNOLOGY AGHInventors: Edis Kasemi, Andreas Kramer, Ursula Stadelmann, Urs Burckhardt
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Patent number: 10246545Abstract: Invention relates to bismuth-containing catalysts, obtainable by reacting at least one bismuth(III) salt or bismuth(III) complex with at least one 1,3-ketoamide with the formula (I). Such complex compounds are suited in particular as catalysts for one- and two-component polyurethane compositions. The invention further relates to two-component polyurethane compositions, including at least one polyisocyanate as the first component, at least one polyol as the second component, and at least one such bismuth-containing catalyst. The invention further relates one-component polyurethane compositions, including at least one polyurethane prepolymer having isocyanate groups, produced from at least one polyisocyanate with at least one polyol, and one such bismuth-containing catalyst. The invention also relates to various uses of the aforementioned polyurethane compositions.Type: GrantFiled: December 12, 2012Date of Patent: April 2, 2019Assignee: SIKA TECHNOLOGY AGInventors: Urs Burckhardt, Rita Cannas
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Patent number: 10246546Abstract: A polymer containing silane groups, a method for synthesizing same, and curable compositions including the polymer. The polymer containing silane groups has a very long shelf life and cures quickly with moisture. The polymer is suitable as an elastic adhesive or sealant or coating that can be applied at room temperature and has good heat resistance, or as a hot melt adhesive.Type: GrantFiled: November 23, 2015Date of Patent: April 2, 2019Assignee: SIKA TECHNOLOGY AGInventors: Andreas Kramer, Urs Burckhardt
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Patent number: 10221344Abstract: An amine of formula (I) which is particularly suitable for use as a curing agent for epoxy resins. The amine of formula (I) is devoid of non-incorporable toxic phenols, and is low-viscosity and pale in color. It allows the production of easily-workable, low-emission or emission-free epoxy resin products which cure rapidly even at relatively low ambient temperatures thus obtaining a high degree of hardness and a nice surface with hardly any yellowing. This is particularly suited to use in floor or top coatings.Type: GrantFiled: March 23, 2016Date of Patent: March 5, 2019Assignee: SIKA TECHNOLOGY AGInventors: Edis Kasemi, Andreas Kramer, Ursula Stadelmann, Urs Burckhardt
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Publication number: 20190048127Abstract: An epoxy resin composition, the curing components of which contain at least one amine of formula (I) and optionally at least one amine A which is, in particular, an adduct of a polyamine and an epoxide. The amine for formula (I) is used in particular in the form of a reaction product of the reductive alkylation of 1,2-ethylenediamine and an aldehyde or ketone. The epoxy resin composition is used in particular as a low-emission, room-temperature-curing epoxy-resin coating. It is characterised by good processibility, quick curing, high hardness, a nice surface and a low tendency to yellowing.Type: ApplicationFiled: August 30, 2016Publication date: February 14, 2019Applicant: SIKA TECHNOLOGY AGInventors: Edis KASEMI, Andreas KRAMER, Ursula STADELMANN, Urs BURCKHARDT
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Publication number: 20190040253Abstract: 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: ApplicationFiled: February 14, 2017Publication date: February 7, 2019Applicant: SIKA TECHNOLOGY AGInventors: Edis KASEMI, Andreas KRAMER, Ursula STADELMANN, Urs BURCKHARDT, Hans HÄBERLE, Steffen KELCH
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Patent number: 10174150Abstract: A one-part moisture-curing liquid-applied waterproofing membrane as disclosed includes a polyurethane polymer obtained from at least one polyether polyol and at least one diisocyanate, and an aldimine of the formula (I). The membrane has a long shelf life stability with both aromatic and aliphatic isocyanates, a low viscosity at low solvent content, a sufficiently long open time to allow hand application and cures fast to a solid elastic material of high strength and high elongation. The released aldehyde is non-toxic and low flammable and evaporates quickly out of the membrane causing only minimal odor emission. The membrane has high crack-bridging qualities in a broad temperature range and is easily overcoatable without interlayer adhesion problems, which makes it particularly suitable for roofing applications.Type: GrantFiled: July 8, 2015Date of Patent: January 8, 2019Assignee: SIKA TECHNOLOGY AGInventors: Urs Burckhardt, Michael Byrne, Alexander Coward, Mark Gatrell