Two-component polyurethane sealants, and a mixing method therefor
US5264486A · kind A · utility
5Cited by
3References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1991 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Dec 4, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2200/0602
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
2-component polyurethane sealants for the direct glazing of motor vehicles, comprising (A) a pasty polyurethane component containing a polyurethane prepolymer having free isocyanate groups, and a curing agent, and (B) a pasty solvent-containing component, where component (A) contains at least one latent, solvent-activatable curing agent which can be activated by means of solvents, and component (B) contains a polar, aprotic solvent and water reversibly bonded to a carrier substance which liberates the water in a delayed manner after components (A) and (B) have been mixed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.