Azeotropes of octamethyltrisiloxane and N-propoxypropanol
AssigneeDow Corning Corporation
InventorsDwight E. Williams, Ora L. Flaningam
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Abstract
New binary azeotropes of octamethyltrisiloxane (MDM) with n-propoxypropanol, and the use of the binary azeotropes as environmentally friendly cleaning agents are disclosed. New azeotrope-like compositions of octamethyltrisiloxane and n-propoxypropanol are also disclosed.
Claims16
A composition consisting essentially of about 9 to about 41 percent by weight n-propoxypropanol and about 59 to about 91 percent by weight octamethyltrisiloxane wherein the composition is homogenous and azeotropic at a temperature within the range of about 0 to about 151 degrees Centigrade inclusive and wherein the composition has a vapor pressure of 1000 Torr at about 151 degrees Centigrade when the composition consists essentially of 59 percent by weight octamethyltrisiloxane and 41 percent by weight n-propoxypropanol and wherein the composition has a vapor pressure of 0.7 Torr at 0 degrees Centigrade when the composition consists essentially of 91 percent by weight octamethyltrisiloxane and 9 percent by weight n-propoxypropanol.
A composition consisting essentially of 36 to 80 percent by weight octamethyltrisiloxane and 20 to 64 percent by weight n-propoxypropanol wherein the composition is homogeneous and azeotrope-like at a temperature in the range of 141.8 to 142.8 degrees Centigrade at 760 Torr.
Dependencies are inferred from the claim text.