High-solids content solvent-based adhesive compositions and methods of making same
US11220617B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2017 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Nov 4, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J183/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A two-component adhesive composition is disclosed. The adhesive composition comprises an isocyanate component comprising an isocyanate-terminated prepolymer that is the reaction product of a polyisocyanate and an isocyanate reactive component having an average molecular weight less than 1,500. The NCO content of the isocyanate component without solvent is between 9 and 18%. The composition further comprises a polyol component comprising a polyester polyol having a molecular weight greater than 1,500 that is the reaction product of a polyhydric alcohol and a polybasic acid. The composition still further comprises an adhesion promoter. The average functionality of the adhesive composition is from 2 to 2.4. The adhesive composition provides for improved performance and processability at a solid content greater than 45 wt %. A methods of forming the adhesive composition is also disclosed. A laminate formed by this method is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.