Polyurethane composition with reduced water to prepolymer mix ratio
US5229453A · kind A · utility
3Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1991 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Jun 4, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2210/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A hydrophilic polyurethane prepolymer in a compatible, water-miscible solvent or solvent blend having a solids content of greater than about 10 and less than about 50 percent prepolymer in organic solvent that reacts with water at about a 1:1 ratio by volume to produce an excellent gel for use in sealing water containing structures and soil stabilization. In the cure process, the compositions of the present invention expand less than 50%, and preferably less than 30%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.