Patent ID: 11920065
Assignee: BOSTIK SA
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A self-adhesive article comprising an adhesive layer consisting of a crosslinked adhesive composition comprising:
A) at least one polysilylated polymer having a number-average molar mass (Mn) of at least 20000 g/mol, wherein the at least one polysilylated polymer comprises a polyether and/or polyurethane main chain and at least two hydrolysable silylated end groups, said silylated end groups being attached to the main chain of the polymer by a urethane or ether function (referred to as a connector group),
B) a tackifying resin mixture comprising at least one type (i) and (ii) tackifying resin, wherein each resin has a hydroxyl number less than or equal to 50 and wherein type (i) and type (ii) tackifying resins are defined as follows:
i. resins obtained by polymerization or copolymerization, optionally by hydrogenation, of unsaturated aliphatic and/or aromatic hydrocarbon mixtures having approximately 5, 9 or 10 carbon atoms derived from petroleum fractions; and
ii. resins obtained by a process comprising the polymerization of pure alpha-methyl styrene monomers; and

C) at least one crosslinking catalyst,
D) excluding any monosilylated polymer.