EP 3794059 A1 20210324 - LINEAR POLYDIMETHYLSILOXANE-POLYOXYALKYLENE BLOCK COPOLYMERS OF THE STRUCTURAL TYPE ABA
Title (en)
LINEAR POLYDIMETHYLSILOXANE-POLYOXYALKYLENE BLOCK COPOLYMERS OF THE STRUCTURAL TYPE ABA
Title (de)
LINEARE POLYDIMETHYLSILOXAN-POLYOXYALKYLEN-BLOCKCOPOLYMERE DES STRUKTURTYPS ABA
Title (fr)
COPOLYMÈRES SÉQUENCÉS DE POLYDIMÉTHYLSILOXANE ET DE POLYOXYALKYLÈNE DE STRUCTURE LINÉAIRE DE TYPE ABA
Publication
Application
Priority
- EP 18172882 A 20180517
- EP 18189075 A 20180815
- EP 2019061639 W 20190507
Abstract (en)
[origin: WO2019219446A1] The invention relates to equilibrated trifluoromethanesulphonic acid α,ω-diacetoxypolydimethylsiloxanes, processes for the production thereof and SiOC-linked, linear polydimethylsiloxane-polyoxyalkylene block copolymers of the structural type ABA as well as a method for the production thereof, wherein the production of SiOC-linked, linear polydimethylsiloxane-polyoxyalkylene block copolymers of the structural type ABA is carried out by reacting trifluoromethanesulphonic acid acetoxysiloxane with polyetherols optionally in the presence of bases and optionally in the presence of an inert solvent.
IPC 8 full level
C08G 77/08 (2006.01); C08G 77/10 (2006.01); C08G 77/14 (2006.01); C08G 77/46 (2006.01)
CPC (source: EP US)
C08G 77/08 (2013.01 - EP US); C08G 77/10 (2013.01 - EP US); C08G 77/14 (2013.01 - EP US); C08G 77/46 (2013.01 - EP US)
Citation (search report)
See references of WO 2019219446A1
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 2019219446 A1 20191121; CA 3099860 A1 20191121; CN 112135861 A 20201225; EP 3794059 A1 20210324; US 11345783 B2 20220531; US 2021163687 A1 20210603
DOCDB simple family (application)
EP 2019061639 W 20190507; CA 3099860 A 20190507; CN 201980033055 A 20190507; EP 19721303 A 20190507; US 201917048752 A 20190507