Adhesive compositions based on polyurethane and on a polyamine suspension, process of preparation and use
US5955533A · kind A · utility
5Cited by
0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Oct 2, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to adhesive compositions based on polyurethane and on a polyamine suspension, characterized in that the free isocyanate functional group content is between 2 and 9% by weight and the polyamine is in the form of particles of mean diameter between 30 and 60 .mu.m. Its subject-matter is also a process for the preparation of the said compositions which consists in reacting a polyol and a polyisocyanate to form a polyurethane prepolymer, which prepolymer is mixed with the polyamine suspension. Such compositions can be employed for the adhesive bonding of materials especially for motor vehicles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.