Method for forming a laminate comprising a two-component solventless adhesive composition including an amine-initiated polyl
US11014334B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 25, 2017 |
| Grant date | May 25, 2021 |
| Priority date | — |
| Expiry date | May 13, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2475/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Methods for forming a laminate structure comprising a two-component solventless polyurethane adhesive compositions are disclosed. The adhesive composition is formulated such that each component is applied independently to corresponding substrates prior to the substrates being brought together to form the laminate structure. The adhesive compositions are highly-reactive and can comprise amine-initiated polyols or catalysts providing for fast curing. The amine-initiated polyols comprise 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 catalyst can be bismuth catalysts, zinc catalysts, zirconium catalysts, tin catalysts, and aluminum catalysts. Still further, a laminate formed according to the methods is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.