Polyurethane based hot melt adhesive
Номер патента: EP4337710A1
Опубликовано: 20-03-2024
Автор(ы): Jakub KRUSZYNSKI, Lidia JASINSKA-WALC, Miloud BOUYAHYI, Robbert Duchateau
Принадлежит: SABIC Global Technologies BV
Опубликовано: 20-03-2024
Автор(ы): Jakub KRUSZYNSKI, Lidia JASINSKA-WALC, Miloud BOUYAHYI, Robbert Duchateau
Принадлежит: SABIC Global Technologies BV
Реферат: Hot melt adhesive comprising a randomly hydroxyl functionalized branched olefin copolymer having: number average molecular weight (Mn) between 10 to 50 kg/mol, preferably between 20 to 50 kg/mol, crystallinity ( X
c ) content below 30%, preferably below 15%, more preferably below 10%, enthalpy ( ΔH ) between 5 to 65 J/g, preferably 5 to 30J/g, polydispersity index (PDI) from 2 to 6, preferably strictly superior to 3 and inferior to 6, melting temperature ( Tm ) between 40 and 120 °C, optionally, more than two hydroxyl functionalities per polymer chain and consisting of at least 80 mol% of a constituent unit represented by formula (1), optionally a constituent unit represented by formula (2), and between 0.1 to 1 mol%, preferably 0.1 to 0.5m%, of a constituent unit represented by formula (3); wherein: R 1 is H or CH 3 ; R 2 is selected from the list comprising: hydrocarbyl group having 0 to 10 carbon atoms, preferentially 2 to 6 and more preferentially 6 when R 1 = H, and preferably 0, 2 or 4 when R 1 = CH 3 ; R 3 is a hydrocarbyl group having 2 to 10 carbon atoms, preferentially 2 to 8, preferentially 4 to 8, more preferentially 4 or 6, and wherein the hydroxyl functionalized olefin copolymer has been undergone an addition reaction with a di-, tri- or poly- isocyanates represented by formula (4); Wherein, R 4 is hydrocalbyl group having 1 to 10 carbon atoms an n is 1 to 4, preferentially 1 to 2, more preferentially 1.
Moisture-curable hot melt adhesive
Номер патента: WO2015080283A1. Автор: Tadashi Hayakawa,Tsuyoshi Tamogami. Владелец: Henkel AG & Co. KGaa. Дата публикации: 2015-06-04.