Method for the preparation of water-borne polyurethane adhesive
US6191214A · kind A · utility
3Cited by
0References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1999 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Jul 16, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2170/80
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention consists of a method for the preparation of an anionic water dispersible polyurethane(PU), which has excellent adhesive properties. The preparation method involves the formation of prepolymer from polyisocyanates and an active hydrogen containing compound such as polyols, followed by chain extension with aliphatic diols or diamines, and finally by chain extension with N-(2-aminoalkyl-2-aminoethoxylate ethane sulfonate and dispersion of the reaction product by deionized water to obtain water-borne polyurethane adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.