Fast setting polyurethane hot melt adhesive composition comprising low hydroxyl number/high molecular weight polyester diols
US5939488A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Oct 15, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/905
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The subject invention provides reactive hot melt adhesive compositions comprising polyurethane prepolymers which have an isocyanate index greater than one and which are prepared from a low hydroxyl number composition comprising high molecular weight polyester diols which have a relatively low melting point. These reactive hot melt adhesive compositions have a faster setting speed than conventional reactive hot melt adhesive compositions. The subject invention also provides a method for bonding articles together which uses such reactive hot melt adhesive compositions and articles which comprise the reactive hot melt adhesive compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.