Two-component solventless adhesive compositions comprising an amine-initiated polyol
US11041100B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2017 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Apr 25, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2475/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Two-component solventless polyurethane adhesive compositions comprising an isocyanate component and a polyol component comprising at least one highly-reactive amine-initiated polyol are disclosed. The at least one amine-initiated polyol comprises primary hydroxyl groups and a backbone incorporating one or more tertiary amines. The amine-initiated polyol further comprises a functionality of from 2 to 12, a hydroxyl number of from 5 to 1,830, and a viscosity at 40° C. of from 500 to 20,000 mPa-s. The polyol component can further comprise a non-amine-initiated polyol. The adhesive compositions are formulated such that the isocyanate and polyol components can be applied to separate substrates prior to mixing. Still further, a laminate comprising the adhesive compositions is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.