Process for producing flexible polyurethane foam
US5093378A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1989 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | Jun 22, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/906
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved process for producing a flexible polyurethane foam having improved flame retardance and physical properties by reacting a polyhydroxy compound and a polyisocyanate compound in the presence of a blowing agent, wherein the improvement comprises using as the polyhydroxy compound one in which an aldehyde condensation polymer has been formed by polycondensation and dispersed such that it accounts for preferably from 5 to 30 wt % of the total amount of the polyhydroxy compound, and adding as the flame retardant a melamine powder preferably in an amount of from 5 to 100 parts by weight for 100 parts by weight of said polyhydroxy compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.