Halogenated polyether polyols and polyurethane foams produced therefrom
US4173710A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1977 |
| Grant date | Nov 6, 1979 |
| Priority date | — |
| Expiry date | Nov 14, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/335
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
New halogenated polyether polyols for the production of permanently fire-proof polyurethane foams, said halogenated polyether polyols corresponding to the general formula: ##STR1## in which z represents a number between 2 and 6, x and y represent numbers between 0 and 12 such that the mean value x+y per chain is between 0 and 12, and that z (x+y), in which x+y represents the mean value of x+y in the entire molecule, is between 1 and 72, and Z represents the residue of a halogenated polyhydroxyl compound initiator and comprises a C.sub.2 to C.sub.6 halogenated aliphatic radical of valence z, the halogen being selected from the group consisting of chlorine and bromine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.