Henkel Ag & Company, Kgaa

Daniela Braun

Johann Klein

Thomas Bachon

Christiane Kunze

Lars Zander

Sara Gonzalez

Andreas Bolte

Ulrich Neuhausen

Andreas Ferencz

Helene Boudet

Tamara Schmidt

Lothar Unger

Werner Juettner

Erik Hattemer

Sarah Schulz

Werner JÜTTNER

The present invention relates to silane-crosslinking curable compositions encompassing a polymer P having at least two terminal groups of the following formulas (I) and (II) -A-K&#x2014;SiRXY (I), -A-K&#x2014;SiRXY (II), and/or two polymers Pand P, polymer Phaving terminal groups of the following formula (I) -A-K&#x2014;SiRXY (I), and polymer Phaving terminal groups of the following formula (II) -A-K&#x2014;SiRXY (II), in which A denotes a divalent bonding group, K, K, mutually independently, denote a divalent aliphatic hydrocarbon group that has a main chain of 1 to 6 carbon atoms, the hydrocarbon groups K, Kbeing different, X, Y mutually independently denote a hydroxy group or a hydrolyzable group, R, Rmutually independently denote a hydrocarbon residue having 1 to 20 carbon atoms, and m assumes the values 0 or 1.

Curable compositions composed of silanes with two hydrolyzable groups

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

The invention relates to silane cross-linking curable compositions, comprising a polymer P with at least two terminal groups of the following formulae (I) and (II) -A-K&#x2014;SiXYZ (I), -A-K&#x2014;SiXYZ (II), and/or two polymers Pand P, the polymer Phaving terminal groups of the following formula (I) -A-K&#x2014;SiXYZ (I), and the polymer Phaving terminal groups of the following formula (II) -A-K&#x2014;SiXYZ (II). In said formulae, A represents a bivalent binding group Kand Kindependently of one another represent a bivalent aliphatic hydrocarbon group with a main chain of between 1 and 6 carbon atoms, the hydrocarbon groups K, Kbeing different, X, Y and Z independently of one another represent a hydroxy group of a hydrolysable group and m stands for 0 or 1.

Curable compositions consisting of silanes with three hydrolysable groups

This disclosure relates to a curable composition comprising at least one polymer A with at least one reactive silyl group and at least one polymer B with at least one reactive silyl group, the number of reactive silyl groups in the polymer A being greater or equal to the number of silyl groups in polymer B and the reactive silyl groups being capable of cross-linking to form siloxane bonds. The disclosure also relates to preparations containing a composition of this type and to the use of said compositions.

Compositions consisting of partially silyl-terminated polymers

Aqueous, storage-stable emulsions of &#x3b1;-silyl terminated polymers are useful as adhesives, sealing compounds and coating materials. The &#x3b1;-silyl terminated polymers correspond to the general formula (I): in which Ris a linear or branched alkyl or alkoxy group containing 1 to 4 carbon atoms, Rand Rindependently of one another are linear or branched alkyl groups containing 1 to 4 carbon atoms, Rand Rindependently of one another are divalent organic connecting groups, Ris a hydrophobic divalent polymer group; and Ris a CHSiR(OR)(OR) group, in which R, Rand Rhave the above meaning or Rstands for a group that lends the polymer of the general formula (I) the property of self-emulsification in water by forming an oil in water emulsion.

Storage-stable aqueous emulsions of &#x3b1;-silyl terminated polymers

Growing community of inventors

Shanghai, China

Daniela Braun