Patents by Inventor Alexander COWARD
Alexander COWARD 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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Publication number: 20240287241Abstract: A composition includes a first component containing at least one polyaspartic acid ester (P1-1) and optionally a polyaspartic acid ester (P1-2) and a mixture of various polyetheraspartic acid esters (P2), and of a second component containing at least one aliphatic polyisocyanate (B1) and at least one isocyanate prepolymer (B2). The composition is particularly suitable as a cover coating composition. Said composition has a good adhesion on polyurea and polyurethane membranes, in particular roof membranes, and has drying times of less than 120 min, an elongation at break of 80-200% and a tensile strength of more than 6 N/mm2.Type: ApplicationFiled: May 24, 2022Publication date: August 29, 2024Applicant: SIKA TECHNOLOGY AGInventors: Steven DAWN, Michael BYRNE, Alexander COWARD
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Patent number: 12018169Abstract: A multi-component composition contains a) a polyol component having a1) acrylate polyol and a2) at least one of polyester polyol and polyether polyol, wherein the equivalent ratio of hydroxyl groups of acrylate polyol to hydroxyl groups of the at least one of polyester polyol and polyether polyol is in the range of 0.4 to 3.8, and b) an isocyanate component containing b1) aliphatic polyisocyanate monomer, dimer and/or trimer, and b2) aliphatic polyisocyanate prepolymer, wherein the equivalent ratio of isocyanate groups of aliphatic polyisocyanate monomer, dimer and/or trimer to isocyanate groups of aliphatic polyisocyanate prepolymer is in the range of 0.5 to 2.6. The multi-component composition is suitable for use as a top coat on elastic membranes, in particular roofing membranes, to provide sufficient weathering resistance/protection.Type: GrantFiled: December 18, 2019Date of Patent: June 25, 2024Assignee: SIKA TECHNOLOGY AGInventors: Stephen Glover, Alexander Coward, Mark Gatrell, Mike Byrne
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Publication number: 20230416561Abstract: A method for coating a surface, including the steps: a) applying a first layer of a moisture-curable composition onto a surface, b) optionally letting the applied moisture-curable composition cure into a dried first layer, c) applying a second layer of the moisture-curable composition onto the optionally dried first layer, wherein the moisture-curable composition includes: between 20 and 50 wt.-%, preferably between 25 and 45 wt.-%, based on the total weight of the composition, of at least one organic polymer which is liquid at room temperature and contains reactive silane groups, and between 10 and 30 wt.-%, preferably between 15 and 25 wt.-%, based on the total weight of the composition, of at least one polyether PE having between 2 and 6 ether oxygen atoms and is free of hydroxyl groups; and at least one curing catalyst for reactive silane groups. The method yields a multilayer coating with high intercoat adhesion.Type: ApplicationFiled: December 8, 2021Publication date: December 28, 2023Applicant: SIKA TECHNOLOGY AGInventors: John BARRATT, Mohammed Aadil PATEL, Ian MARTIN, Alexander COWARD, Alison MANNING, Peter CORMACK, Michael BYRNE
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Publication number: 20230183478Abstract: A polyurea composition containing monomeric diisocyanates in an amount of max. 0.5 wt.% and consisting of a first component containing a primary, aromatic diamine and a second component containing an isocyante-group-containing polyether urethane polymer containing monomeric diisocyantes in an amount of max. 0.5 wt.% and an aliphatic polyisocyanate with an NCO content of 8 to 25 wt.%.Type: ApplicationFiled: May 4, 2021Publication date: June 15, 2023Applicant: SIKA TECHNOLOGY AGInventors: Jordan HOLMES, Alison THOMSON, Stephen GLOVER, Michelle ROUND, Alexander COWARD, Mark GATRELL, Mike BYRNE
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Publication number: 20210340402Abstract: A multi-component composition contains a) a polyol component having a1) acrylate polyol and a2) at least one of polyester polyol and polyether polyol, wherein the equivalent ratio of hydroxyl groups of acrylate polyol to hydroxyl groups of the at least one of polyester polyol and polyether polyol is in the range of 0.4 to 3.8, and b) an isocyanate component containing b1) aliphatic polyisocyanate monomer, dimer and/or trimer, and b2) aliphatic polyisocyanate prepolymer, wherein the equivalent ratio of isocyanate groups of aliphatic polyisocyanate monomer, dimer and/or trimer to isocyanate groups of aliphatic polyisocyanate prepolymer is in the range of 0.5 to 2.6. The multi-component composition is suitable for use as a top coat on elastic membranes, in particular roofing membranes, to provide sufficient weathering resistance/protection.Type: ApplicationFiled: December 18, 2019Publication date: November 4, 2021Applicant: SIKA TECHNOLOGY AGInventors: Stephen GLOVER, Alexander COWARD, Mark GATRELL, Mike BYRNE
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Patent number: 10487237Abstract: 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: GrantFiled: January 21, 2014Date of Patent: November 26, 2019Assignee: SIKA TECHNOLOGY AGInventors: Urs Burckhardt, Ursula Stadelmann, Hans Haberle, Michael Byrne, Mark Gatrell, Alexander Coward
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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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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
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Patent number: 9879154Abstract: A one-part moisture-curing liquid-applied waterproofing membrane is disclosed as including a polyurethane polymer and two different aldimines 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 is particularly 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: January 30, 2018Assignee: SIKA TECHNOLOGY AGInventors: Michael Byrne, Mark Gatrell, Alexander Coward, Urs Burckhardt
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Patent number: 9790398Abstract: The present application is directed at the reaction product of an azide compound having two or more azide groups attached thereto and an alkyne compound having two or more alkyne groups attached thereto, wherein the azide and alkyne groups react in a 1,3-dipolar cyclo addition to form 1,4-disubstituted triazols and wherein the azide or alkyne compound or both include —O—(C?O)—NR— functional groups. The reaction products can be used as coatings, such as for flat roofs, sealants, adhesives and in elastomer applications. Methods for producing the reaction products as well as substrates including a coating of the reaction product are also disclosed.Type: GrantFiled: February 5, 2014Date of Patent: October 17, 2017Assignee: SIKA TECHNOLOGY AGInventors: Neil Carter, Ian Martin, Alexander Coward, Mark Gatrell, Michael Byrne, John E. Cullen, Peter Cormack
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Patent number: 9752054Abstract: The present invention describes a one-part moisture-curing liquid-applied waterproofing membrane including a polyurethane polymer and both a trialdimine and a dialdimine 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 5, 2017Assignee: SIKA TECHNOLOGY AGInventors: Michael Byrne, Mark Gatrell, Alexander Coward, Urs Burckhardt
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Publication number: 20170198081Abstract: 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 aldehyd is non-toxic and low flammable and evaporates quickly out of the membrane causing only minimal odour 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: ApplicationFiled: July 8, 2015Publication date: July 13, 2017Applicant: SIKA TECHNOLOGY AGInventors: Urs BURCKHARDT, Michael BYRNE, Alexander COWARD, Mark GATRELL
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Publication number: 20160024318Abstract: 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: ApplicationFiled: January 21, 2014Publication date: January 28, 2016Applicant: Sika Technology AGInventors: Michael BYRNE, Mark GATRELL, Alexander COWARD, Urs BURCKHARDT
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Publication number: 20150368530Abstract: The present application is directed at the reaction product of an azide compound having two or more azide groups attached thereto and an alkyne compound having two or more alkyne groups attached thereto, wherein the azide and alkyne groups react in a 1,3-dipolar cyclo addition to form 1,4-disubstituted triazols and wherein the azide or alkyne compound or both include —O—(C?O)—NR— functional groups. The reaction products can be used as coatings, such as for flat roofs, sealants, adhesives and in elastomer applications. Methods for producing the reaction products as well as substrates including a coating of the reaction product are also disclosed.Type: ApplicationFiled: February 5, 2014Publication date: December 24, 2015Applicant: Sika Technology AGInventors: Neil CARTER, Ian MARTIN, Alexander COWARD, Mark GATRELL, Michael BYRNE, John E. CULLEN, Peter CORMACK
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Publication number: 20150361299Abstract: A one-part moisture-curing liquid-applied waterproofing membrane is disclosed as including a polyurethane polymer and two different aldimines as blocked amine hardeners in a specific ratio range. The membrane has a low odour, 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 is particularly suitable for roofing applications, possessing high strength, high elongation and good durability under outdoor weathering conditions in a broad temperature range.Type: ApplicationFiled: January 21, 2014Publication date: December 17, 2015Applicant: SIKA TECHNOLOGY AGInventors: Michael BYRNE, Mark GATRELL, Alexander COWARD, Urs BURCKHARDT
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Publication number: 20150353769Abstract: The present invention describes a one-part moisture-curing liquid-applied waterproofing membrane including a polyurethane polymer and both a trialdimine and a dialdimine 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: ApplicationFiled: January 21, 2014Publication date: December 10, 2015Applicant: Sika Technology AGInventors: Michael BYRNE, Mark GATRELL, Alexander COWARD, Urs BURCKHARDT
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Publication number: 20150353770Abstract: 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: ApplicationFiled: January 21, 2014Publication date: December 10, 2015Applicant: SIKA TECHNOLOGY AGInventors: Urs BURCKHARDT, Ursula STADELMANN, Hans HABERLE, Michael BYRNE, Mark GATRELL, Alexander COWARD