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Azeotropic-like compositions with 1,1,1,2,3,3-hexafluoro-3-methoxy-propane and 1-bromopropane

An azeotropic composition, the technology of the composition, applied in the direction of lubricating composition, base material, heat exchange material, etc., can solve the problems of short atmospheric life, low toxicity, low global warming, etc.

Inactive Publication Date: 2010-12-01
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some embodiments, alternative solvents also have low toxicity and no flash point (as measured by ASTM D3278-98e-1, "Flash Point of Liquids by Small Scale Closed-Cup Apparatus" ), acceptable stability, short atmospheric lifetime, and low global warming potential

Method used

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  • Azeotropic-like compositions with 1,1,1,2,3,3-hexafluoro-3-methoxy-propane and 1-bromopropane
  • Azeotropic-like compositions with 1,1,1,2,3,3-hexafluoro-3-methoxy-propane and 1-bromopropane
  • Azeotropic-like compositions with 1,1,1,2,3,3-hexafluoro-3-methoxy-propane and 1-bromopropane

Examples

Experimental program
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example

[0056] The preparation, characterization and testing of the azeotrope-like compositions of the present invention are further described in the following examples. The particular materials and amounts thereof, as well as other conditions and details, recited in these examples should not be construed to unduly limit this invention. In these examples, all percentages, proportions and ratios are by weight unless otherwise specified.

[0057] 1,1,1,2,3,3-Hexafluoro-3-methoxy-propane is available from Synquest Labs (Aluhua, FL). 1-Bromopropane is available from Aldrich Chemical Company, Inc. (Milwaukee, WI).

example 1

[0059] Various mixtures of 1,1,1,2,3,3-hexafluoro-3-methoxy-propane and 1-bromopropane were distilled at ambient pressure (722-727 Torr) by the following method, To identify whether it forms a binary azeotrope, and if so, record the composition and boiling point (bp°C) of the azeotrope. This mixture was prepared and distilled at ambient laboratory pressure (722-727 Torr) in a concentric tube distillation column (Model 933, available from Ace Glass, Vinland, New Jersey). In each case, the distillation was allowed to equilibrate for at least 60 minutes at full reflux. For each distillation, five consecutive distillate samples, each approximately 10% by volume of the total liquid charge, were taken while operating the distillation column at a liquid reflux ratio of 10:1. Then use capillary column with RTX-200 (Restek Corp., Bellefonte, PA) or Nukol capillary column (Supelco, Bellefonte, PA) or Quadrex007 series methylsiloxane capillary column (Quadrex Corp., New Haven, CT) and ...

example 2-4

[0064] 1,1,1,2,3,3-hexafluoro-3-methoxy was determined by using a boiling point meter or a boiling point meter (Model MBP-100, obtained from Cal-Glass for Research, Inc., Costa Mesa, CA). The boiling points of test mixtures of 1-propane and 1-bromopropane were used to determine the percentage range of the azeotrope-like composition of the present invention. An aliquot (25 to 30 milliliters (mL)) of the low boiling point component of the test composition was added to the boiling point apparatus. Heat the liquid and let it equilibrate to its boiling point (usually about 30 minutes). After equilibration the boiling point is recorded, an approximately 1.0 mL aliquot of the high boiling point component is added to the apparatus and the resulting new composition is allowed to equilibrate for approximately 10 minutes at which time the boiling point is recorded. The test was continued essentially as described above, adding about 1.0 mL of the high boiling point component to the test ...

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Abstract

Azeotrope-like compositions comprising 1-bromopropane and 1,1,1,2,3,3-hexafluoro-3-methoxy-propane, and uses thereof, are described.

Description

technical field [0001] The present invention relates to azeotrope and azeotrope-like compositions containing 1,1,1,2,3,3-hexafluoro-3-methoxy-propane and 1-bromopropane, and to the use of azeotrope and azeotrope-like Azeotrope compositions are used in methods of cleaning substrates, depositing coatings, transferring thermal energy and lubricating machining operations. Background technique [0002] Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and hydrochlorocarbons (HCCs, such as 1,1,1-trichloroethane and carbon tetrachloride) have been widely used in solvent applications such as drying, Cleaning (eg removal of flux residues from printed circuit boards) and vapor degreasing. These materials are also used in refrigeration and heat transfer processes. However, photolytic and homolytic reactivity at chlorinated carbon sites have been shown to contribute to the depletion of the Earth's ozone layer. Additionally, the long atmospheric lifetime of CFCs has been li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04C09D7/00C10M169/04C11D7/50C23G5/028C10N40/20C10N40/22C10N40/24C10N40/30
CPCC10M2211/0225C10M2207/2805C10M105/50C09D7/001C09K2205/32C10N2240/40C10M2207/0406C10M2207/2815C10M2213/023C23G5/02803C10N2240/204C10M2229/02C10M2213/0623C10N2250/121C09K5/045C10N2240/30C10M2207/1253C10M2213/0606C09K2205/112C10M2209/1033C10N2240/66C10M2203/1006C10M2211/0425C09K2205/122C09D7/20C10N2040/18C10N2040/20C10N2040/30C10N2050/02C10N2040/50
Inventor 约翰·G·欧文斯
Owner 3M INNOVATIVE PROPERTIES CO
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