Sika Technology Ag

Ian Martin

Neil Carter

Craig Evans

Mark Gatrell

Alexander Coward

Michael Byrne

Len Daniels

Ramiro Garcia

Lars Conrad

Peter Cormack

Shuyuan Liu

Kirk Booth

Yolanda Pardos

John E Cullen

Alison Thomson

Luz Granizo

David Teichert

Water-based polyurethane dispersion methodology relating to a chain-extended polyurethane, characterized in that the polyurethane dispersion includes 2, 5, 7, 10-tetraoxaundecane. The water-based polyurethane dispersion is suitable as a non-hazardous water-based coating composition for coatings with a particularly good adhesion on plastic or rubber substrates. The solvent 2, 5, 7, 10-tetraoxaundecane contained therein imparts good film coalescing, good adhesive properties and high strength of the polyurethane dispersion.

Non-hazardous water-based polyurethane dispersion

A composition including: at least one waterbased polyurethane dispersion containing ethylene oxide units; at least one cement; and at least one mineral filler. The composition can be mixed and applied without coagulation of the polyurethane dispersion. Upon curing, it has a high strength and good adhesion properties, with surprisingly low shrinkage and most surprisingly good water impermeability properties. It is particularly suitable for the use as repair mortar, waterproofing mortar or screed mortar.

Mortar containing polyurethane dispersion with ethylene oxide units

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 &#x2014;O&#x2014;(C&#x2550;O)&#x2014;NR&#x2014; 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.

Synthesis of polyurethane polymers via copper azide-alkyne click chemistry for coatings, adhesives, sealants and elastomer applications

Non-crystallizing oxazolidines as curing agents for polyisocyanates and polyurethanes. The curing agents are mixtures of at least one polyoxazolidine POU having at least two urethane groups and at least one polyoxazolidine POC having at least one carbonato group.

Non-crystallizing bis-oxazolidines

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Barrow, United Kingdom

Ian Martin