Patent ID: 7267886

Claim:
A polymerisable adhesive composition for bonding a low surface energy substrate to a similar or different substrate, comprising: a) at least one free-radically polymerisable monomer component, and b) an effective amount or an initiator system for initiating polymerisation of the free-radically polymerisable monomer, wherein said initiator system comprises a compound of the formula I: wherein R 1 is C 1 –C 10 alkyl, R 2 , R 3 and R 4 , which may be the same or different, are C 1 –C 10 alkyl or C 3 –C 10 cycloalkyl, phenyl, or phenyl-substituted C 1 –C 10 alkyl or C 3 –C 10 cycloalkyl, provided that any two of R 1 –R 4 may optionally be part of a carbocyclic ring, and M + is a quaternary ammonium cation.