Process for the preparation of highly elastic polyurethane flexible foams and their use as upholstery material
US5158987A · kind A · utility
0Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Jul 30, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2110/0083
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a process for preparing highly elastic polyurethane flexible foams by the reaction of PA1 (a) polyisocyanates with PA1 (b) polyethers having a molecule weight of from 400 to 10,000 and containing at least two isocyanate-reactive hydrogen atoms, in the presence of PA1 (c) water and PA1 (d) mixtures of crosslinking agents having a molecular weight of from 32 to 399 and containing at least two isocyanate-reactive hydrogen atoms, wherein said mixtures contain PA2 (I) alkanolamines and PA2 (II) amine-free polyols, with the proviso that components (c) and (d) must be used together as an aqueous solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.