18720807. ADHESIVE FILM, ADHESIVE SYSTEM, AND RELATED PROCESSES (3M INNOVATIVE PROPERTIES COMPANY)

ADHESIVE FILM, ADHESIVE SYSTEM, AND RELATED PROCESSES

Organization Name

3M INNOVATIVE PROPERTIES COMPANY

Inventor(s)

Kerstin Unverhau of Neuss (DE)

Silke D. Mechernich of Düsseldorf (DE)

Frank Kuester of Düsseldorf (DE)

Olaf W. Van Gansewinkel of Juechen (DE)

Hans Peter Dette of Neuss (DE)

ADHESIVE FILM, ADHESIVE SYSTEM, AND RELATED PROCESSES

This abstract first appeared for US patent application 18720807 titled 'ADHESIVE FILM, ADHESIVE SYSTEM, AND RELATED PROCESSES

Original Abstract Submitted

An adhesive film includes a first (meth)acrylate copolymer containing at least 55 weight percent (wt. %) of linear or branched alkyl (meth)acrylate monomer units, from 15 to 40 wt. % of (meth)acrylic acid monomer units, and 0.1 to 5 wt. % of monomer units of a crosslinking monomer having more than one (meth)acrylate group. If the first (meth)acrylate copolymer comprises 15 wt. % (meth)acrylic acid monomer units, the first (meth)acrylate copolymer comprises at least five wt. % monomer units of a high Tmonomer. The adhesive film comprises not more than five wt. % of a further (meth)acrylate copolymer comprising from 0.1 to 15 wt. % of (meth)acrylic acid monomer units. The adhesive film can be a multilayer adhesive assembly including a first layer of the first (meth)acrylate copolymer and a second adhesive layer adjacent to the first layer. A process for making and a system including the adhesive film and a primer are also described.