Invention Grant
- Patent Title: Low-modulus silylated polyurethanes
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Application No.: US14741758Application Date: 2015-06-17
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Publication No.: US10370570B2Publication Date: 2019-08-06
- Inventor: Lars Zander , Helmut Loth , Marc Pascal Burmeister , Rolf Tenhaef , Johann Klein , Jan-Erik Damke
- Applicant: Henkel AG & Co. KGAA
- Applicant Address: DE Duesseldorf
- Assignee: Henkel AG & Co. KGaA
- Current Assignee: Henkel AG & Co. KGaA
- Current Assignee Address: DE Duesseldorf
- Agent James E. Piotrowski
- Priority: DE102012223422 20121217
- Main IPC: C08G18/08
- IPC: C08G18/08 ; C08G18/10 ; C08G18/12 ; C08K5/00 ; C09J175/08 ; C09K3/10

Abstract:
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. Further disclosed is a silylated polyurethane that can be produced by the method, a curable composition based thereon, and the use of such a composition as an adhesive, sealant and/or coating material.
Public/Granted literature
- US20150284610A1 LOW-MODULUS SILYLATED POLYURETHANES Public/Granted day:2015-10-08
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