EP 4103634 A1 20221221 - SILANE GROUP-CONTAINING BRANCHED POLYMER
Title (en)
SILANE GROUP-CONTAINING BRANCHED POLYMER
Title (de)
VERZWEIGTES SILANGRUPPEN-HALTIGES POLYMER
Title (fr)
POLYMÈRE RAMIFIÉ CONTENANT UN GROUPE SILANE
Publication
Application
Priority
- EP 20156461 A 20200210
- EP 2021052560 W 20210203
Abstract (en)
[origin: WO2021160493A1] The invention relates to a silane group-containing branched polymer having on average at least 2.1 silane groups per molecule, from the reaction of (i) an isocyanate group-containing polymer having an NCO content in the range of 0.7 to 4 wt.%, obtained from the reaction of at least one monomer diisocyanate with at least one polyether polyol in a molar NCO:OH ratio of at least 1.5:1, with (ii) at least one amino-, mercapto- or hydroxysilane, in a stoichiometric ratio of at least one amino-, mercapto- or hydroxysilane per mole equivalent of isocyanate groups. The silane group-containing polymer is storage stable, liquid at room temperature and easy to handle and allows curable compositions characterized by excellent workability, fast curing, high strength with high ductility and surprisingly good thermal stability. The polymer is especially suitable as a component of moisture-curing sealants, adhesives or coatings which in particular contain an additional, particularly linear silane group-containing polymer.
IPC 8 full level
C08G 18/10 (2006.01); C08G 18/28 (2006.01); C08G 18/48 (2006.01); C08G 18/75 (2006.01); C08G 18/76 (2006.01); C09J 175/08 (2006.01)
CPC (source: EP KR US)
C08G 18/10 (2013.01 - EP KR US); C08G 18/289 (2013.01 - EP KR US); C08G 18/4825 (2013.01 - EP KR US); C08G 18/4841 (2013.01 - EP KR US); C08G 18/755 (2013.01 - EP KR US); C08G 18/7671 (2013.01 - EP KR US); C09D 175/08 (2013.01 - US); C09J 175/08 (2013.01 - EP KR US); C09K 3/1021 (2013.01 - US)
Citation (search report)
See references of WO 2021160493A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021160493 A1 20210819; BR 112022014200 A2 20221004; CN 115066447 A 20220916; EP 4103634 A1 20221221; JP 2023513877 A 20230404; KR 20220139865 A 20221017; US 2023054396 A1 20230223
DOCDB simple family (application)
EP 2021052560 W 20210203; BR 112022014200 A 20210203; CN 202180013553 A 20210203; EP 21703266 A 20210203; JP 2022546641 A 20210203; KR 20227025535 A 20210203; US 202117792794 A 20210203