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Compositions and uses of trans-1,1,1,4,4,4-hexafluoro-2-butene

a technology of hexafluoro-2-butene and hexafluoro-2-butene, which is applied in the direction of liquid organic insulators, non-surface-active detergent solvents, insulated cables, etc., and can solve the problems of widespread use and scrutiny of hfcs

Inactive Publication Date: 2018-09-20
THE CHEMOURS CO FC LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention relates to foams, particularly thermoset foams like polyurethane foams, which have exceptional thermal performance in low temperatures. This makes them ideal for use in applications such as refrigerators and freezers. The invention offers improved insulation, reduced energy consumption, and improved manufacturing processes. The technical effects of the present invention include improved thermal performance, energy efficiency, and improved manufacturing processes.

Problems solved by technology

As a result of their contribution to global warming, the HFCs have come under scrutiny, and their widespread use may also be limited in the future.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

sing Z-1,1,1,4,4,4-hexafluoro-2-butene and E-1,1,1,4,4,4-hexafluoro-2-butene Mixtures as the Blowing Agent

[0050]The foaming was carried out at 1000 psi (6.9 MPa) sprayer gauge pressure using different mixtures of these blowing agents and at different foaming temperatures. The results are reported in Table 2.

TABLE 2Use of Mixtures of the Z- and E-Isomers as Blowing AgentThermalConductivityIsomerFoaming TempDensity(BTU-in / hr-Mixture, %(° F.)(PCF)ft2-° F.)40Z / 60Epoor quality foam——50Z / 50Epoor quality foam——60Z / 40E1002.460.1593 (5.57)60Z / 40E1402.630.1553 (5.43)70Z / 30E1002.510.1555 (5.44)70Z / 30E1402.730.1559 (5.45)80Z / 20E1002.860.1654 (5.78)

[0051]The numerical amounts of Z and E in the Isomer mixture column are the wt % s of the isomer in the mixture. Thus, isomer mixture Z40 / E60 means the mixture is 40 wt % Z-isomer and 60 wt % E-isomer. The poor quality of the sprayed foam for the 40Z / 60E and 50Z / 50E compositions is exhibited by the foam structure being frothy, i.e. exhibiting large op...

example 2

y of Blowing Agent in Polyol of B-Side

[0057]E-1,1,1,4,4,4-hexafluoro-2-butene has a boiling temperature of 7.5° F. (1 atm) and causes the polyisocyanate / polyol reaction product to froth uncontrollably when the E-isomer is used by itself as the blowing agent, which disrupts the spray pattern when this method of application is used. This disruption of the spray pattern causes the deposited foamed structure to exhibit a rough exterior surface arising from expansion of the E-isomer that is not dissolved in the polyol of the B-side composition. A “frothed” foam lacks integrity by being easily collapsed. A comparison of solubilities when the E-isomer is the only blowing agent and when 10 wt % (based on the weight of the polyol of the B-side composition) of the Z-isomer is supplemented by the E-isomer is presented in Table 4.

TABLE 4Comparison of Solubilities ofBlowing Agent in Polyol of B-side CompositionE-Isomer Solubility inBlowing AgentPolyol (wt %)E-isomerless than 1.48E-isomer / 10 wt %...

example 3

[0109]HFO-1336mzz(E) / HFO-1336mzz(Z) Blends Approximating the Volumetric Capacity for Power Generation of HFC-245Fa without Exceeding the Equipment Maximum Permissible Working Pressure

[0110]Table 8 compares the performance of Rankine cycles operated at an evaporating temperature of 120° C. with HFO-1336mzz-E / HFO-1336mzz-Z blends of various compositions to performance of a Rankine cycle operated at the same evaporating temperature with HFC-245fa. The volumetric capacity for power generation with blend A.1 is within 5% of that with HFC-245fa. The volumetric capacity for power generation with blend A.2 matches that with HFC-245fa with an evaporating pressure not exceeding that of HFC-245fa. The volumetric capacity for power generation with blend A.3 exceeds that with HFC-245fa by about 5% with an evaporating pressure not exceeding 2.18 MPa. Finally, the volumetric capacity for power generation with blend A.4 is the maximum possible (higher than that with HFC-245fa by about 12.5%) with a...

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Abstract

Disclosed is a mixture comprising the compound trans-1,1,1,4,4,4-hexafluoro-2-butene and at least one additional compound selected from the group consisting of HFOs, HFCs, HFEs, CFCs, CO2, olefins, organic acids, alcohols, hydrocarbons, ethers, aldehydes, ketones, and others such as methyl formate, formic acid, trans-1,2 dichloroethylene, carbon dioxide, cis-HFO-1234ze+HFO-1225yez; mixtures of these plus water; mixtures of these plus CO2; mixtures of these trans 1,2-dichloroethylene (DCE); mixtures of these plus methyl formate; mixtures with cis-HFO-1234ze+CO2; mixtures with cis-HFO-1234ze+HFO-1225yez+CO2; and mixtures with cis-HFO-1234ze+HFC-245fa. Also disclosed are methods of using and products of using the above compositions as blowing agents, solvents, heat transfer compositions, aerosol propellant compositions, fire extinguishing and suppressant compositions.

Description

BACKGROUND INFORMATIONField of the Disclosure[0001]This disclosure relates to compositions, methods and systems having utility in numerous applications, and in particular, uses for compositions containing the compound trans-1,1,1,4,4,4-hexafluoro-2-butene (E-HFO-1336mzz).Description of the Related Art[0002]Many industries have been working for the past few decades to find replacements for the ozone depleting chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs). The CFCs and HCFCs have been employed in a wide range of applications, including their use as aerosol propellants, refrigerants, cleaning agents, expansion agents for thermoplastic and thermoset foams, heat transfer media, gaseous dielectrics, fire extinguishing and suppression agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents. In the search for replacements for these versatile compounds, many industries have...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A62D1/00C08J9/14C09K5/04C09K3/30C10M105/52C10M105/04A01N29/00C11D7/50H01B3/56H05F3/04B01D11/02
CPCA62D1/0057C08J9/146C08J9/144C09K5/045C09K5/044C09K5/048C09K3/30C10M105/52C10M105/04A01N29/00C11D7/5018H01B3/56H05F3/04B01D11/0288C09K2205/32C09K2205/24C09K2205/12C09K2205/126C08J2367/00C08J2203/182C08J2203/202C10M2211/0225C10M2203/045C08J2203/162C09K5/00H01B3/24A62D1/0071C08J2300/22C08J2300/24C08J9/141C08J2375/04C09K2205/40C09K2205/22C08J9/149C08J9/142C08J9/122A62D1/0092H01B7/423
Inventor ROBIN, MARK L.KONTOMARIS, KONSTANTINOS
Owner THE CHEMOURS CO FC LLC
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