Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1977-07-12
1978-08-29
Ivy, C. Warren
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521137, 521174, C08G 1814
Patent
active
041102720
ABSTRACT:
The formation of high-resilience polyurethane foam is provided by the use, as the foam-stabilizing component, of a particular class of sulfolanyloxyalkyl-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 sulfolanyloxyalkyl; (2) an average of from about 0.5 to about 10 moles of difunctional dialkylsiloxy units for every two moles of M.degree.; and (3) from 0 up to an average of about 10 moles, for every two moles of M.degree., of difunctional monoalkylsiloxy units in which the second organic group bonded to silicon is sulfolanyloxyalkyl, provided an average of at least about 0.5 and no more than about 10 moles of sulfolanyloxyalkyl groups are present in the sulfolanyloxyalkyl-polyalkylsiloxanes for every two moles of M.degree.. In addition to such sulfolanyloxyalkyl-polyalkylsiloxanes, 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 least about 35 mole percent based on the total moles of hydroxyl groups contained in said polyether polyol. The polyol reactant may additionally comprise a polymer/polyether polyol.
REFERENCES:
patent: 2833801 (1958-05-01), Holbrook
patent: 4049674 (1977-09-01), Kanner
patent: 4049675 (1977-09-01), Kanner
Cooper, G. D., Journal of Am. Chem. Soc., vol. 76, pp. 3713-3716, (1954).
Kanner Bernard
Prokai Bela
Ivy C. Warren
Klosty Marylin
Union Carbide Corporation
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