Rigid polyurethane foam-forming compositions
US4169922A · kind A · utility
8Cited by
11References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1977 |
| Grant date | Oct 2, 1979 |
| Priority date | — |
| Expiry date | Dec 27, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Advantageous rigid polyurethane foam properties (e.g. compressive strength) can be improved and the proportions of polymerization catalyst and/or surfactant needed to provide a given level of such properties can be lowered by preparing such foams from compositions comprising, in addition to the conventional foam-forming reactants including polyisocyanate and polyol, from about 3% to about 10%, based on the weight of the polyol, of a plasticizer selected from essentially halogen-free phosphates and carboxylates containing at least one aryl radical, e.g. isodecyl diphenyl phosphate or butyl benzyl phthalate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.