Henkel Ag & Company, Kgaa

Nitrochemie Aschau Gmbh

Helene Boudet

Johann Klein

Andrea Gutacker

Andreas Bolte

Lars Zander

Therese Hemery

Christiane Kunze

Sebastian Kapusta

Thomas Bachon

Udo Kragl

Esteban Mejia

Noelle Wrubbel

Adrian Duracu

Bernhard Schoettmer

Daniela Braun

Sara Gonzalez

Nick Spielkamp

Jens Baumgard

Kerstin Unger

Henrik Lund

Nicole Ditges

Sarah Schulz

Andrea Krlejova

Thérèse Hémery

Bernhard SCHÖTTMER

The invention relates to curable compositions based on polyorganosiloxanes with special silicon-containing terminal groups, an adhesion promoter, a curing catalyst, and an additive having a ketone functional moiety. These compositions have improved mechanical and adhesion properties and excellent storage stability. The invention also relates to the uses thereof.

Curable silicone compositions containing additives

The invention relates to curable compositions based on polyorganosiloxanes with special silicon-containing terminal groups, a special capped adhesion promoter, and a curing catalyst. These compositions have improved adhesion properties and excellent storage stability. The invention furthermore relates to the use thereof.

Curable silicone compositions

The invention relates to curable polyorganosiloxanes with special silicon-containing terminal groups and curable compositions based on these polyorganosiloxanes, a capped adhesion promoter, and a curing catalyst. These compositions have improved adhesion properties and excellent storage stability. The invention also relates to the use thereof.

Endcapped curable polyorganosiloxanes

The invention relates to a curable composition, containing

This disclosure relates to a zinc complex formula (I), as defined herein, to the use of this zinc complex as a catalyst, in particular for the catalysis of a condensation reaction of organosilicon compounds. This disclosure also relates to preparations containing said compounds and to the use thereof.

Organic zinc complexes as catalysts for condensation reactions

Curable compositions comprising a) an alkoxysilane and/or acyloxysilane terminated polymer having at least one end group of the general formula (I) -A-R&#x2014;SiXYZ (I) and b) hollow microspheres made of a copolymer obtained by the polymerization of methacrylonitrile and at least one monomer M2 selected from the group consisting of acrylic acid, methacrylic acid, acrylic acid alkyl esters and methacrylic acid alkyl esters, wherein the copolymer comprises at maximum 5 wt. % units that are due to the installation of additional monomers and is free of units containing chlorine, to a method for the production thereof and to the use thereof as silane cross-linking adhesive, sealing or coating substances.

Curable composition

Silylated polyurethanes can be manufactured by reacting at least one polyol compound, having a molecular weight from 4000 to 20,000 dalton, with a diisocyanate, with a stoichiometric excess of the diisocyanate compound with respect to the polyol compound or compounds, with the result that a polyurethane prepolymer that is isocyanate-terminated is formed; and by subsequently reacting the polyurethane prepolymer with one or more OH-terminated silanes of formula (1) to yield a polyurethane having predominantly terminal alkoxysilyl groups. In formula (1), m is equal to 0, 1, or 2, Ris an alkyl residue having 1 to 4 carbon atoms, Ris an alkyl residue having 1 to 4 carbon atoms, Ris a divalent organic residue having 1 to 12 atoms, selected from C, N, S, and/or O, in the chain, but by preference exclusively carbon atoms, Ris a hydrogen atom or an alkyl residue having 1 to 10 carbon atoms, and R is a difunctional organic group, preferably a linear or branched alkyl group having 1 to 6 carbon atoms. The silylated polyurethanes are suitable for use in a preparation as an adhesive, sealant, or coating agent.

Curable compositions containing silylated polyurethanes

A method for producing a silylated polyurethane including the steps: (A) converting (i) at least polyol compound having a molecular weight of 4,000-30,000 g/mol and at least one monofunctional compound relative to isocyanates and (ii) at least one diisocyanate at a stoichiometric excess of the sum of the polyol compound(s) and monofunctional compound relative to the diisocyanate compound(s), whereby a hydroxyl-terminated polyurethane prepolymer is formed; and (B) converting the polyurethane prepolymer and one or more isocyanate silane(s) of the formula (I): OCN&#x2014;R&#x2014;Si&#x2014;(R1)(-OR2), where m is 0, 1 or 2, each R2 is an alkyl radical having 1 to 4 carbon atoms, each R1 is an alkyl radical having 1 to 4 carbon atoms, and R is a difunctional organic group. Also compounds comprising the silylated polyurethane that can be so produced, and the use thereof as an adhesive and sealant or coating composition.

Curable compound comprising silylated polyurethane

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Hilden, Germany

Helene Boudet