Patent · US Active

Robust adhesives for laminating flexible packaging material

US9580538B2 · kind B2 · utility

2Cited by

4References

14Claims

0Family size

Assignee

HENKEL IP & HOLDING GMBH · DE

Inventors

Guido Kollbach · Apex, US
Balasubramaniam Ramalingam · Cary, US

Key dates

Filing date	Oct 24, 2011
Grant date	Feb 28, 2017
Priority date	—
Expiry date	Oct 24, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31605
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A robust, two component adhesive for laminating flexible packaging material comprising a mixture of Component A and Component B. Component A comprises an isocyanate-functionalized compound. Component B comprises a mixture of a high functionality polyol containing at least four hydroxyl groups per molecule with at least two primary OH groups on the molecule and two secondary OH groups on the molecule and a trifunctional polyol containing three OH groups on the molecule. Component B can contain a difunctional polyol containing two OH groups on the molecule. The adhesive is robust and retains desirable properties when used at varying A:B mix ratios better than conventional laminating adhesives used at the same mix ratios.

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