Patent ID: 11873429
Assignee: BOSTIK SA
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A hot-melt, pressure-sensitive adhesive composition comprising:
a) at least one polyurethane comprising at least two end functional groups T of following formula (I):

[Chem 20]

—X—(C═O)—CH(RV)═CH2  (I), wherein RV represents a hydrogen atom or a methyl radical and X represents —O— or —NR′N— with R′N representing a hydrogen atom or a linear or branched alkyl radical comprising from 1 to 20 carbon atoms;
b) at least one tackifying resin chosen from the following resins:
(b1) terpene/phenolic resins;
(b2) resins resulting from polymerization of α-methylstyrene, optionally followed by a reaction with at least one phenol;
(b3) polymeric resins resulting from mainly C9 aromatic fractions; and

c) at least one polymerization inhibitor;, wherein:
the polyurethane(s) (a): tackifying resin(s) (b) ratio by weight ranges from 4:6 to 6:4.