Title:
LOW-MODULUS SILYLATED POLYURETHANES
Document Type and Number:
WIPO Patent Application WO/2014/095650
Kind Code:
A3
Abstract:
Good extensibility with a high restoring force is to be realised in a silylated polyurethane. This is achieved by a method for producing a silylated polyurethane that comprises the following steps: (1) reacting at least one polyether polyol having a number average molecular weight of at least 2,000 g/mol with at least one polyisocyanate in the presence of at least one solvent; (2) reacting the reaction product of step (1) with at least one silane of formula (I) A-R-SiXYZ (I), where A means -NH2 or -NHB, wherein B stands for a branched or linear alkyl radical with 1-12 C atoms, possibly having functional groups, a cyclic alkyl radical having 5-8 C atoms, or an aryl radical, R is a divalent hydrocarbon radical having 1-12 C atoms, and X, Y, Z are substituents on the Si atom and are independently of each other C1-C8 alkyl, C1-C8 alkoxy or C1-C8 acyloxy groups, wherein at least one of radicals X, Y, Z is a C1-C8 alkoxy or C1-C8 acyloxy group, in the presence of at least one solvent. The invention further relates to a silylated polyurethane that can be produced by the method according to the invention, a curable composition based thereon, and the use of such a composition as an adhesive, sealant and/or coating material.
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Inventors:
ZANDER LARS (DE)
LOTH HELMUT (DE)
BURMEISTER MARC PASCAL (DE)
TENHAEF ROLF (DE)
KLEIN JOHANN (DE)
DAMKE JAN-ERIK (DE)
LOTH HELMUT (DE)
BURMEISTER MARC PASCAL (DE)
TENHAEF ROLF (DE)
KLEIN JOHANN (DE)
DAMKE JAN-ERIK (DE)
Application Number:
PCT/EP2013/076582
Publication Date:
August 14, 2014
Filing Date:
December 13, 2013
Export Citation:
Assignee:
HENKEL AG & CO KGAA (DE)
International Classes:
C08G18/10; C08G18/08; C08G18/12; C08L75/04
Foreign References:
| EP2103648A1 | 2009-09-23 | |||
| EP2143746A1 | 2010-01-13 | |||
| EP0931800A1 | 1999-07-28 | |||
| DE102007058483A1 | 2009-06-10 |
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