EP 4058495 A1 20220921 - MOISTURE-CURABLE POLYURETHANE HOTMELT ADHESIVE HAVING HIGH INITIAL STRENGTH
Title (en)
MOISTURE-CURABLE POLYURETHANE HOTMELT ADHESIVE HAVING HIGH INITIAL STRENGTH
Title (de)
FEUCHTIGKEITSHÄRTENDER POLYURETHANHEISSKLEBSTOFF MIT HOHER ANFÄNGLICHER FESTIGKEIT
Title (fr)
ADHÉSIF THERMOFUSIBLE À BASE DE POLYURÉTHANE DURCISSABLE À L'HUMIDITÉ AYANT UNE RÉSISTANCE INITIALE ÉLEVÉE
Publication
Application
Priority
- CN 2019118894 W 20191115
- EP 20165961 A 20200326
- EP 2020082002 W 20201113
Abstract (en)
[origin: WO2021094509A1] The present invention relates to a moisture-curable polyurethane hotmelt adhesive containing at least 80% by weight based on the total weight of the moisture-curable polyurethane hotmelt adhesive of isocyanate-terminated prepolymer obtainable by mixing diisocyanate (a) with compounds having at least two isocyanate-reactive groups (b) and reacting the mixture to afford the isocyanate-terminated prepolymer, wherein the compounds having at least two isocyanate-reactive groups (b) contain at least one polylactide (b1) obtainable by reaction of lactide with a linear difunctional starter molecule having 2 to 20 carbon atoms and the isocyanate content of the isocyanate-terminated prepolymer is 1% to 5% by weight. The present invention further relates to a process for producing such a moisture-curable polyurethane hotmelt adhesive and to the use thereof for bonding substrates.
IPC 8 full level
C08G 18/12 (2006.01); C08G 18/40 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01); C08G 18/76 (2006.01); C09J 175/04 (2006.01)
CPC (source: EP KR US)
C08G 18/12 (2013.01 - EP KR US); C08G 18/307 (2013.01 - EP KR US); C08G 18/4018 (2013.01 - EP KR US); C08G 18/4063 (2013.01 - EP KR US); C08G 18/4202 (2013.01 - EP KR); C08G 18/4238 (2013.01 - EP KR US); C08G 18/428 (2013.01 - EP KR US); C08G 18/4825 (2013.01 - EP KR US); C08G 18/6225 (2013.01 - US); C08G 18/6229 (2013.01 - EP KR); C08G 18/7671 (2013.01 - EP KR US); C09J 5/06 (2013.01 - US); C09J 175/06 (2013.01 - EP KR); C09J 175/08 (2013.01 - EP KR US); C08G 2170/20 (2013.01 - EP US); C09J 2475/00 (2013.01 - US)
Citation (search report)
See references of WO 2021094509A1
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
DOCDB simple family (publication)
WO 2021094509 A1 20210520; CN 114729094 A 20220708; EP 4058495 A1 20220921; JP 2023506693 A 20230220; KR 20220100032 A 20220714; TW 202128933 A 20210801; US 2022403219 A1 20221222
DOCDB simple family (application)
EP 2020082002 W 20201113; CN 202080079679 A 20201113; EP 20803587 A 20201113; JP 2022528244 A 20201113; KR 20227020172 A 20201113; TW 109139526 A 20201112; US 202017776454 A 20201113