Aqueous polyurethane dispersions and adhesives based thereon
US5494960A · kind A · utility
29Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1993 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Apr 7, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2170/80
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aqueous polyurethane dispersions used in adhesives for manufacturing laminate structures are provided with improved dispersion properties, which provide improved shelf-life stability of the dispersion and greater transparency and handling characteristics in application machinery for adhesives formulated therefrom, when a tertiary amine is present during an initial polyurethane prepolymer reaction between an isocyanate and a polyol component having acid functional groups. The initial reaction is carried out prior to formation of the dispersion in water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.