Patent · US Active

Low-viscosity, rapid curing laminating adhesive composition

US12359015B2 · kind B2 · utility

0Cited by

6References

20Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

Ines Seehagen · Neuss, DE
Michael Hoeltgen · Dressendorf, DE
Helga Garmann · Hilden, DE
Dennis Bankmann · Dressendorf, DE

Key dates

Filing date	May 21, 2019
Grant date	Jul 15, 2025
Priority date	—
Expiry date	Jun 19, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09J2475/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a 2-component polyurethane adhesive, in particular for laminating films, wherein the PU adhesive, based on the total weight of the laminating adhesive composition, (a) contains as resin component at least one NCO-terminated polyurethane pre-polymer having a content of at least 40% by weight of diphenylmethandiisocyanate (MDI), wherein the MDI is 4,4′-diphenylmethandiisocyanate or a mixture thereof with 2,4′-diphenylmethandiisocyanate, and (b) contains as hardener component a polyol mixture comprising at least three different polyols. The invention further relates to the use of the adhesive for adhesively bonding films, to methods for producing composite films, and to composite films bonded by means of the described adhesive.

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