Azeotropes of octamethyltrisiloxane and n-propoxypropanol
First Claim
1. A composition consisting essentially of about 9 to about 27 percent by weight n-propoxypropanol and about 73 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 148 degrees Centigrade inclusive and wherein the composition has a vapor pressure of 1000 Torr at about 148 degrees Centigrade when the composition consists essentially of 73 percent by weight octamethyltrisiloxane and 27 percent by weight n-propoxypropanol and wherein the composition has a vapor pressure of 0.8 Torr at 0 degrees Centigrade when the composition consists essentially of 91 percent by weight octamethyltrisiloxane and 9 percent by weight n-propoxypropanol.
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Accused Products
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.
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Citations
13 Claims
- 1. A composition consisting essentially of about 9 to about 27 percent by weight n-propoxypropanol and about 73 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 148 degrees Centigrade inclusive and wherein the composition has a vapor pressure of 1000 Torr at about 148 degrees Centigrade when the composition consists essentially of 73 percent by weight octamethyltrisiloxane and 27 percent by weight n-propoxypropanol and wherein the composition has a vapor pressure of 0.8 Torr at 0 degrees Centigrade when the composition consists essentially of 91 percent by weight octamethyltrisiloxane and 9 percent by weight n-propoxypropanol.
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13. A composition consisting essentially of 54 to 91 percent by weight octamethyltrisiloxane and 9 to 46 percent by weight n-propoxypropanol wherein the composition is homogeneous and azeotrope-like at a temperature in the range of 138.63 to 139.64 degrees Centigrade at 760 Torr.
Specification