Two component polyurethane adhesive
US7834123B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 2006 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | May 2, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J175/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A two component polyurethane adhesive composition having one or more polyols as a first component and one or more isocyanates as a second component. The composition also comprises one or more catalysts and one or more blocking agents to delay the curing reaction. The composition provides long open time, improved wet out of the substrates to be bonded, a rapid cure rate and excellent final bond performance at room and elevated temperatures. Optional ingredients, such as fillers, chain extenders and plasticizers may be added as desired. In one embodiment, the catalyst is a tin catalyst such as dibutyl tin dilaurate which may optionally be combined with other catalysts such as tertiary amines. The blocking agent in one embodiment is 8-hydroxyquinoline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.