Sika Technology Ag

Jochen Grötzinger

Carola Kaddatz

Edis Kasemi

Uwe Von Der Brüggen

Patricia Gimeno

Oguz Sarioglu

Urs Burckhardt

Andreas Kramer

Ursula Stadelmann

Urs Mäder

Thomas Pusel

Hans Gantner

Lars Conrad

Stefan Kühner

Johannes Viertel

Till Weikert

Kathrin Bracht

Henry Heinrich

Benjamin Stöhr

Patricia Gimeno Santos

Matthias Niethammer

David Teichert

An amine-functional adduct from the reaction of an amine mixture containing at least one diamine of formula (I) and at least one diamine of formula (II) in a weight ratio ranging from 65/35 to 95/5 with at least one diepoxide in a stoichiometric ratio of at least 1.2 moles of diamine of the formula (I) to 1 mole equivalent of epoxide groups. The adduct is liquid at room temperature without diluent even in the presence of a small excess of diamine and is surprisingly low in viscosity. In addition, it is particularly cost-effective, as it is available from an amine mixture that is technically easy to produce. The adduct enables low-emission or emission-free epoxy resin coatings with surprisingly good workability at surprisingly fast curing, which have a high hardness and low tendency to yellowing, and which hardly tend to blushing-related defects even in cold and humid conditions.

Amine epoxy resin adduct

A combination of carbon nanotubes and at least one amine of formula (I) for producing an electrically conductive epoxy resin coating, and to an electrostatically dissipative floor system, which contains the electrically conductive epoxy resin coating. The epoxy resin floor systems are readily-workable, robust, electrostatically, dissipative, and have a largely constant electrical resistance, which have a highly aesthetic, well-ventilated, even surface.

Electrically conductive epoxy resin coating and electrostatically dissipative floor

A multi-component composition comprising a first component including water, and a second component including at least one hydraulic binder, wherein the multi-component composition includes a copolymer CP, wherein the copolymer is a vinyl versatate copolymer CPA, and/or a copolymer based on styrene and (meth) acrylic acid esters CPB. The amount of hydraulic binder, based on the total weight of the multi-component composition, is from 25-65 weight-%. The multi-component composition is especially suitable as a flooring material for industrial floors and car parks.

Cementitious hybrid flooring composition

The invention relates to an epoxy resin composition comprising at least one epoxy liquid resin, bis(aminomethyl)cyclohexane and a wax. The claimed composition can be processed in an excellent manner, cures very rapidly and virtually no yellowing occurs, has a hard, glossy surface of high quality, even during curing under moist conditions such as, for example, 8&#xb0; C. and 80% relative humidity. The claimed composition is particularly suitable for use as a floor coating, in particular as a top coat or sealing, where low emission together with high demands on the workability, impact strength and the aesthetics exist.

Epoxy resin composition for coating purposes

A coating system including at least one reactive resin system RH, at least one thixotropic assistant TH selected from the group consisting of urea preparations HZ and fibers FS and at least one inorganic aggregate AZ having a particle size in the range from 0.2 to 3.0 mm. The coating system has a viscosity as measured with a shear rate of 1 sof 9000-100,000 Pas and a viscosity as measured with a shear rate of 100 sof 400-15,000 Pas. The coating system is notable for high surface roughness and for reliable and long-term bonding of the aggregates to the coating with no need for sealing. There is also no need for the coating to be subsequently strewn with aggregates such as sand, for example.

Coating system having high surface roughness

A three component composition consisting of a polyol component (A) including at least two polyols, one with high, one with low molecular weight and water, a polyisocyanate component (B) including a methylene diphenyl diisocyanate (MDI) product with an average NCO functionality of at least 2.5, or a methylene diphenyl diisocyanate (MDI) product with an average NCO functionality of at least 2 and at least one further polyol with an amount of between 1% and 30% based on the weight of the polyisocyanate component (B), wherein the MDI product and the polyol have reacted at least partially, and a powder component (C) including at least one hydraulic binder, preferably cement and/or calcined paper sludge, preferably a calcium compound selected from calcium hydroxide and/or calcium oxide, and optionally one or more aggregates.

Three component composition for the manufacture of primer layer or scratch coating for flooring

The invention relates to the use of a multi-component composition comprising A) a polyol component (A) comprising at least one polyol and water, B) a hardener component (B) comprising at least one polyisocyanate, and C) a solid component (C) comprising a hydraulic binder and one or more aggregates, as an early water resistant construction or repair material for constructing, repairing or refurbishing component parts, wherein the mixed and applied multi-component composition is immersed in water not later than 8 hours, preferably not later than 2 h, after application. The use as an early water resistant construction or repair material is especially suitable for component parts, which are in contact with water during operation such as offshore wind energy plants or water retaining systems, e.g. pipelines.

Polyurethane hybrid system combining high compressive strength and early water resistance

A multi-component composition, in particular a three-component composition, especially for manufacture of a polyurethane cementitious hybrid flooring, including or made of: a polyol component (A) including at least one polyol and water; a hardener component (B) including at least one polyisocyanate compound; a solid component (C) including at least one hydraulic binder; and wherein at least one of the components of the multi component composition includes at least one comb polymer having a main chain including acid groups, and side chains being attached on the main chain.

Reducing blister formation in polyurethane cementitious hybrid systems

The present invention relates to a three component composition consisting of a polyol component (A) comprising at least two polyols, one with high and one with low molecular weight, and water, a polyisocyanate component (B) comprising a methylene diphenyl diisocyanate (MDI) product with an average NCO functionality of at least 2.5, or a methylene diphenyl diisocyanate (MDI) product with an average NCO functionality of at least 2 and at least one further polyol with an amount of between 1% and 30% based on the weight of said polyisocyanate component (B), wherein said MDI product and said polyol have reacted at least partially, and a powder component (C) comprising at least one hydraulic binder, preferably cement and/or calcined paper sludge, preferably a calcium compound selected from calcium hydroxide and/or calcium oxide, and optionally one or more aggregates. Polyurethane cementitious hybrid flooring or coating systems having glossy/semiglossy surfaces, good workability and outstanding mechanical properties can be achieved. Blister formation can be avoided.

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Schwäbisch Gmünd, Germany

Jochen Grötzinger