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Azeotrope-like compositions and their use

An azeotropic composition, the technology of the composition, applied in the directions of lubricating composition, detergent composition, non-surface-active detergent composition, etc., can solve problems such as depletion of ozone layer

Active Publication Date: 2010-09-29
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, photolytic and homolytic activity on chlorinated carbon sites contributes to the depletion of the Earth's ozone layer

Method used

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  • Azeotrope-like compositions and their use
  • Azeotrope-like compositions and their use
  • Azeotrope-like compositions and their use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0087] Using the following method, the C 2 f 5 CF(OCH 3 )CF(CF 3 ) 2 Distill various mixtures with organic solvents at ambient pressure (725-740 torr) to identify whether they constitute a binary azeotrope, and if so, use the following procedure to determine the composition (wt.%) and Melting point (b.p°C). This mixture was prepared and distilled at ambient laboratory pressure (725-740 Torr) in a concentric tube distillation column (Model 933, ex Ace Glass, Vinland, New Jersey). In each example, the distillation was equilibrated at total reflux for at least 60 minutes. For each distillation, 6 consecutive distillations were taken, each about 5% by volume of the total liquid feed, while operating the distillation column at a liquid reflux ratio of 20:1. Then use capillary column with RTX-200 (obtained from Restek, Corporation, Bellefonte, Pennsylvania) and Nukol capillary column (obtained from Supelco, Bellefonte, Pennsylvania) or Quadrex 007 Series MethylSilicone capilla...

Embodiment 7-12

[0093] C was determined by using a boiling point meter or boiling point measuring equipment (Model MBP-100, obtained from Cal-Glass for Research, Inc, Costa Mesa, California). 2 f 5 CF(OCH 3 )CF(CF 3 ) 2 The boiling point of the test mixture with 1-bromopropane, trifluoromethylbenzene, hexamethyldisilazane, isobutyl acetate, methyl isobutyl ketone and trans-1,2-dichloroethylene was used to determine the Percentage ranges for inventive azeotrope-like compositions. A portion (25-30 milliliters (mL)) of the low boiling point component of the test composition was added to the boiling point apparatus. The liquid is heated to allow it to equilibrate to its boiling point (usually about 30 minutes). After equilibration the boiling point was recorded, an approximately 1.0 mL portion of the high boiling point component was added to the apparatus and the resulting new composition was equilibrated for approximately 10 minutes at which time the boiling point was recorded. Continue to...

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Abstract

Azeotrope-like compositions comprising C2F5CF(OCH3)CF(CF3)2 (1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-trifluoromethyl-pentane) and an organic solvent, and uses thereof, are described.

Description

technical field [0001] The present invention relates to azeotropes and azeotrope-like compounds comprising 1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-trifluoromethyl-pentane Compositions, and methods of cleaning substrates, depositing coatings (such as cosmetics), transferring thermal energy, and lubricating processes using the azeotrope and azeotrope-like compositions. Background technique [0002] Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and hydrochlorinated hydrocarbons (HCCs such as 1,1,1-trichloroethane and carbon tetrachloride) have been widely used in solvent applications, Examples include drying, cleaning (eg removal of soldering residues from printed circuit boards) and vapor degreasing. These materials are also used in refrigeration and heat transfer processes. However, photolytic and homolytic activity on chlorinated carbon sites contributes to the depletion of the Earth's ozone layer. In addition, the long atmospheric lifetime of CFCs is re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D7/50C11D3/24C10M105/54C10M105/52C07C43/12C11D11/00
CPCC10M2211/0225C11D7/5095C10M105/54C10N2240/40C10M105/52C11D7/5063C11D7/5086C11D11/0011C10M2211/0425C07C43/12C10M2211/0245C10N2040/20C11D2111/10C11D7/50C11D3/24
Inventor 保罗·E·劳伊塔尔约翰·G·欧文斯
Owner 3M INNOVATIVE PROPERTIES CO