Adhesive dual-component composition based on polyurethane
US11345836B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 2017 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jul 11, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2475/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to an adhesive dual-component composition based on polyurethane, comprising an —NCO component and an —OH component such that: the —NCO component is a composition comprising A) at least one polyurethane prepolymer comprising at least two NCO terminal groups obtained by polyaddition reaction of at least one aliphatic polyisocyanate selected from aliphatic diisocyanate monomers and mixtures of at least one aliphatic diisocyanate monomer with at least one triisocyanate based on XDI, and at least one polyester diol, and B) at least one triisocyanate based on XDI; and the —OH component is a composition comprising at least one polyester polyol. The invention relates to a method for producing a multilayer structure implementing an adhesive composition according to the invention, as well as to the use of such a structure in the field of flexible packaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.