Aqueous polyurethane dispersions based on polyether polyols of low monol content
US5576382A · kind A · utility
20Cited by
34References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1996 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | May 5, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/6692
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aqueous polyurethane dispersions prepared from chain extended polyurethane prepolymers which are the reaction product of a di- or polyisocyanate, a polyol component containing, in major part, a polyoxypropylene diol having an unsaturation of 0.020 meq/g or less, and a reactive dispersing aid, are suitable for preparing polyurethane films with greater softness and elasticity than similar films prepared from PTMEG, and greater tensile strength and elasticity than polyoxypropylene diols having conventional levels of unsaturation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.