Patent · US Active

Self-adhesive composition for bonding substrates with low surface energy

US11920065B2 · kind B2 · utility

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Key dates

Filing dateOct 24, 2017
Grant dateMar 5, 2024
Priority date—
Expiry dateJan 23, 2039

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC09J2475/00
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

A self-adhesive article comprises an adhesive layer comprising a crosslinked adhesive composition, which comprises 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); at least one tackifying resin having an average hydroxyl number of less than or equal to 100; and at least one crosslinking catalyst, excluding any monosilylated polymer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.