EP 3997185 A1 20220518 - HMPSA CROSSLINKABLE UNDER UV IRRADIATION
Title (en)
HMPSA CROSSLINKABLE UNDER UV IRRADIATION
Title (de)
UNTER UV-BESTRAHLUNG VERNETZBARES HMPSA
Title (fr)
HMPSA RETICULABLE SOUS IRRADIATION UV
Publication
Application
Priority
- FR 1907762 A 20190710
- FR 2020051197 W 20200706
Abstract (en)
[origin: WO2021005299A1] 1) A UV cross-linkable HMPSA composition comprising: - 10-24% by weight of a block copolymer which comprises a styrene block and a polybutadiene block comprising at least 25% by weight of the 1,2-vinyl unit; - 43-65% by weight of a tackifying resin obtained by polymerisation and subsequently total or partial hydrogenation of a C9 cut, having a softening point of 80-150°C; - 10-25% by weight of a petroleum hydrocarbon oil; and - a suitable content of a photoinitiator (D). 2) A self-adhesive article comprising a backing layer (b) coated with a self-adhesive layer (a) consisting of the HMPSA composition in the cross-linked state. 3) A method for manufacturing the article 2), comprising: - preheating the HMPSA composition to a temperature of 70-80°C; - applying the HMPSA composition, by coating, to a bearing surface; cross-linking the HMPSA composition by UV irradiation to form the layer of cross-linked adhesive composition (a); and subsequently - laminating or transferring the layer (a) onto a backing layer or an anti-adhesive protective film.
IPC 8 full level
C09J 7/38 (2018.01); C09J 153/02 (2006.01)
CPC (source: CN EP KR US)
C08K 5/0016 (2013.01 - KR); C08L 53/02 (2013.01 - KR); C08L 57/02 (2013.01 - KR); C09J 5/00 (2013.01 - CN); C09J 7/38 (2017.12 - CN); C09J 7/387 (2017.12 - EP KR US); C09J 153/02 (2013.01 - EP KR); C09J 157/02 (2013.01 - CN KR US); C09J 2301/124 (2020.08 - KR US); C09J 2301/304 (2020.08 - KR US); C09J 2301/414 (2020.08 - KR US); C09J 2301/416 (2020.08 - KR US)
C-Set (source: CN)
Citation (search report)
See references of WO 2021005299A1
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 2021005299 A1 20210114; AU 2020312223 A1 20220120; CA 3140840 A1 20210114; CN 114096630 A 20220225; EP 3997185 A1 20220518; FR 3098520 A1 20210115; FR 3098520 B1 20220722; JP 2022540852 A 20220920; KR 20220032549 A 20220315; MX 2021015444 A 20220124; US 2022315811 A1 20221006
DOCDB simple family (application)
FR 2020051197 W 20200706; AU 2020312223 A 20200706; CA 3140840 A 20200706; CN 202080049481 A 20200706; EP 20750317 A 20200706; FR 1907762 A 20190710; JP 2022501225 A 20200706; KR 20227000215 A 20200706; MX 2021015444 A 20200706; US 202017618048 A 20200706