EP 4004090 A1 20220601 - METHOD FOR PRODUCING A POLYURETHANE FILM
Title (en)
METHOD FOR PRODUCING A POLYURETHANE FILM
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES POLYURETHANFILMS
Title (fr)
PROCÉDÉ DE PRODUCTION D'UN FILM POLYURÉTHANE
Publication
Application
Priority
- DE 102019210860 A 20190723
- EP 2020065902 W 20200609
Abstract (en)
[origin: WO2021013421A1] The invention relates to a method for producing a polyurethane film, comprising the steps of: providing a mass, comprising a high-solids polyurethane system, having a solids portion of at least 80% composed of an isocyanate prepolymer or a mixtures of polyols and isocyanates and a solids cross-linker based on an amine, and a silicone system, containing an addition-crosslinking silicone, which comprises polymers and oligomers bearing silane groups and vinyl groups, and containing a platinum catalyst, the high-solids polyurethane system and the silicone system being mixed with each other, the reaction temperature of the high-solids polyurethane system lying above the reaction temperature of the silicone system; applying the mass to a substrate; heating and gelling the mass applied to the substrate, by supplying heat, to form a film, a primary silicone network first being formed from the silicone system, in which primary silicone network the high-solids polyurethane system is crosslinked with increasing temperature.
IPC 8 full level
CPC (source: EP)
C08J 5/18 (2013.01); C08J 2375/04 (2013.01); C08J 2483/07 (2013.01)
Citation (search report)
See references of WO 2021013421A1
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)
DE 102019210860 A1 20210128; EP 4004090 A1 20220601; WO 2021013421 A1 20210128
DOCDB simple family (application)
DE 102019210860 A 20190723; EP 2020065902 W 20200609; EP 20733907 A 20200609