Formation of high-resilience urethane foam in the presence of morpholino-bearing polyalkylsiloxanes
US4067828A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1977 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | Mar 10, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/904
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The formation of high-resilience polyurethane foam is provided by the use, as the foam-stabilizing component, of a particular class of morpholino-bearing polyalkylsiloxanes which consist essentially of: (1) monofunctional siloxy units (M.degree.) the respective silicon atoms of which have two alkyls bonded thereto, the third silicon-bonded organic group being alkyl or Q where Q is morpholinoalkyl- or morpholinoalkoxyalkyl, (2) an average of from about 0.5 to about 8 moles of difunctional dialkylsiloxy units for every two moles of M.degree., and (3) from zero up to an average of about 8 moles, for every two moles of M.degree., of difunctional monoalkylsiloxy units in which the second organic group bonded to silicon is Q, provided an average of at least about 0.5 and no more than about 8 moles of said silicon-bonded Q groups are present in the siloxanes for every two moles of M.degree.. In addition to such morpholinoalkyl- and morpholinoalkoxyalkyl-polyalkyl-siloxanes, the high-resilience polyurethane foam formulations employed in the method of the invention, contain an organic polyol reactant comprising a polyether polyol reactant having an average primary hydroxyl content of at lea…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.