Flexible polyurethane foams
US4546122A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1984 |
| Grant date | Oct 8, 1985 |
| Priority date | — |
| Expiry date | Aug 6, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/904
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to a process for the production of a flexible polyurethane foam comprising reacting PA1 (a) an organic polyisocyanate, and PA1 (b) a coupled polyol which consists essentially of the reaction product of an organic polyisocyanate and an organic compound having a hydroxy functionality of at least 2 and a primary hydroxy group content of at least 30%, the ratio of hydroxyl groups in said organic compound to isocyanate groups being greater than 1, PA1 (c) in the presence of PA2 (i) a blowing agent, PA2 (ii) a catalyst, and PA2 (iii) a foam stabilizer, said foam stabilizer being capable of producing a flexible polyurethane foam meeting the standard specifications for high resilience polyurethane foam as set forth in ASTM D-3770-79, when used in a foam formulation based on toluene diisocyanate and either (A) a polymer polyol prepared by polymerizing one or more ethylenically unsaturated monomers in a polyether polyol, or (B) a dispersion of polyurea and/or polyhydrazodicarbonamide in a hydroxyl group containing material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.