US20160362531A1 - Blowing agent composition of hydrochlorofluoroolefin and hydrofluoroolefin - Google Patents

Blowing agent composition of hydrochlorofluoroolefin and hydrofluoroolefin Download PDF

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US20160362531A1
US20160362531A1 US15/245,412 US201615245412A US2016362531A1 US 20160362531 A1 US20160362531 A1 US 20160362531A1 US 201615245412 A US201615245412 A US 201615245412A US 2016362531 A1 US2016362531 A1 US 2016362531A1
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hfo
isomers
foam product
hydrofluoroolefin
group
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US15/245,412
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Benjamin Bin Chen
Joseph S. Costa
Philippe Bonnet
Maher Y. Elsheikh
Brett L. Van Horn
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Arkema Inc
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Arkema Inc
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Priority to US15/245,412 priority Critical patent/US20160362531A1/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/143—Halogen containing compounds
    • C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
    • B01F17/0085—
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/143—Halogen containing compounds
    • C08J9/144—Halogen containing compounds containing carbon, halogen and hydrogen only
    • C08J9/146—Halogen containing compounds containing carbon, halogen and hydrogen only only fluorine as halogen atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/149—Mixtures of blowing agents covered by more than one of the groups C08J9/141 - C08J9/143
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K23/00—Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
    • C09K23/017—Mixtures of compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
    • C08J2203/142—Halogenated saturated hydrocarbons, e.g. H3C-CF3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/16—Unsaturated hydrocarbons
    • C08J2203/162—Halogenated unsaturated hydrocarbons, e.g. H2C=CF2
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/18—Binary blends of expanding agents
    • C08J2203/182—Binary blends of expanding agents of physical blowing agents, e.g. acetone and butane
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/10—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups
    • C08J2300/104—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/10—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups
    • C08J2300/106—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing nitrogen atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

Definitions

  • the present invention relates to blowing agents for thermosetting foams. More particularly, the present invention relates to the use of at least one hydrofluoroolefin such as HFO-1234ze in combination with at least one hydrochlorofluoroolefin (HCFO) such as HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof as a blowing agent in the manufacture of thermosetting foams.
  • HFO hydrofluoroolefin
  • HCFO hydrochlorofluoroolefin
  • thermoset foams include HFC-134a, HFC-245fa, HFC-365mfc that have relatively high global warming potential, and hydrocarbons such as pentane isomers flammable and have low energy efficiency. Therefore, new alternative blowing agents are being sought.
  • Halogenated hydroolefinic materials such as hydrofluoropropenes and/or hydrochlorofluoropropenes have generated interest as replacements for HFCs. The inherent chemical instability of these materials in the lower atmosphere provides the low global warning potential and zero or near zero ozone depletion properties desired.
  • the object of the present invention is to provide novel compositions that can serve as blowing agents for thermosetting foams that provide unique characteristics to meet the demands of low or zero ozone depletion potential, lower global warming potential and exhibit low toxicity.
  • the present invention relates to the use of blowing agents with negligible (low or zero) ozone-depletion and low global warming potential based upon unsaturated. halogenated hydroolefins.
  • the blowing agents comprise at least one hydrofluoroolefin preferably (HFO) HFO-1234ze in a combination with at least one hydrochlorofluoroolefin (HCFO) such as HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof.
  • HFO-1234ze is 1,3,3,3-tetrafluoropropene; HCFO 1223 dichlorotrifluoropropene; HCFO-1233zd is 1-chloro-3,3,3-trifluoropropene; HCFO1233xf is 2-chloro-3,3,3-trifluoropropene.
  • the composition can further comprises an additional hydrofiuoroolefins (HFO), a hydrofluorocarbon, a hydrocarbon, an alcohol, an aldehyde, a ketone ether/diether, an ester, carbon dioxide and mixtures thereof.
  • HFO hydrofiuoroolefins
  • Hydrofluoroolefin (HFO) materials have been proposed as blowing agents which exhibit a low global warming potential and a low ozone depletion value.
  • the low global warming potential and a low ozone depletion value are a result of the atmospheric degradation of the hydrofluoroolefins.
  • the hydrofluoroolefin preferably HFO-1234ze in combination with a hydrochlorofluoroolefin (HCFO) preferably selected from HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof combination can be used as a foaming agent for thermosetting foams by being mixed in a polyols mixture.
  • HCFO hydrochlorofluoroolefin
  • the resulted products show superior quality including decreased density and improved k-factor.
  • the foaming agent dissolves in thermosetting polymers, and provides a degree of plasticization sufficient to produce acceptable foams.
  • the preferred blowing agent composition, hydrofluoroolefin, preferably HFO-1234ze in combination with a hydrochlorofluoroolefin (HCFO) preferably selected from HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof of the present invention exhibits good solubility in polyol mixture used in producing polyurethane and polyisocyanurate foams.
  • HCFO hydrochlorofluoroolefin
  • All references herein to HFO-1234ze include the cis isomer, the trans isomers and mixtures thereof.
  • a major portion of the composition of the present invention is the hydrofluoroolefin, preferably HFO-1234ze component.
  • a preferred ratio of the hydrofluoroolefin, preferably HFO-1234ze component in combination with a hydrochlorofluoroolefin (HCFO) preferably selected from HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof is more than about 5 wt % hydrofluoroolefin, preferably HFO-1234ze.
  • HCFO hydrochlorofluoroolefin
  • hydrofluoroolefin preferably HFO-1234ze in combination with a hydrochlorofluoroolefin (HCFO) preferably selected from HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof composition of the present invention
  • HCFO hydrochlorofluoroolefin
  • low or zero ozone depletion value materials including but not limited to: (a) hydrofluorocarbons including but not limited to difluoromethane (HFC32); 1,1,1-trifluoroethane (143a); 1,1,1,2,2-pentafluoroethane (HFC125); 1,1,2,2-tetrafluoroethane (HFC134); 1,1,1,2-tetrafluoroethane (HFC134a); 1,1-difluoroethane (HFC152a); 1,1,1,2,3,3,3-heptafluoropropane (HFC227ea); 1,1,1,3,3-pentafluoro
  • the foamable compositions of the present invention generally includes one or more components capable of forming foam having a generally cellular structure and a blowing agent, typically in a combination, in accordance with the present invention.
  • the one or more components comprise a thermosetting composition capable of forming foam and/or foamable compositions.
  • thermosetting compositions include polyurethane and polyisocyanurate foam compositions, and also phenolic foam compositions.
  • one or more of the present compositions are included as or part of a blowing agent in a foamable composition, or as a part of a two or more part foamable composition, which preferably includes one or more of the components capable of reacting and/or foaming under the proper conditions to form a foam or cellular structure.
  • the invention also relates to foam, and preferably closed cell foam, prepared from a polymer foam formulation containing a blowing agent comprising the compositions of the invention.
  • foamable compositions comprising thermosetting foams, such as polyurethane and polyisocyanurate foams, preferably low-density foams, flexible or rigid.
  • blowing agent combination of the present invention does not generally affect the operability of the present invention.
  • the various components of the blowing agent combination, and even the components of the present composition not be mixed in advance of introduction to the foaming equipment, or even that the components are not added to the same location in the foaming equipment.
  • two or more components of the blowing agent combination are combined in advance and introduced together into the foamable composition, either directly or as part of premix that is then further added to other parts of the foamable composition.
  • the foam was made by a small polyurethane dispenser.
  • the dispenser consists of two pressurized cylinders, and pressure can be adjusted by regulators.
  • B-side (polyols) mixtures were pre-blended and then charged into pressurized cylinders, and A-side consists of MDI. Blowing agents were then added into B-side cylinder and mixed thoroughly.
  • the cylinders were connected to dispensing gun equipped with a static mixer. The pressures of both cylinders were adjusted so that desired ratio of A and B sides can be achieved.
  • the formulations tested (all had an Iso Index on ROH of 110) each contained Rubinate M, a polymeric methylene diphenyl diisocyanate (MDI) available from Huntsman; Jeffol SG-360 and R-425-X, polyols from Huntsman; TEAP-265, a polyol from Carpenter Company. TegostabB8465 a surfactant available from Evonik-Degussa.
  • Jeffcat TD33A and ZR-70 are catalysts from Huntsman. NP 9.5, a compatibilizer from Huntsman. Total blowing level is 26.0 mls/g.
  • the k-factor measurements (ASTM C518) on the resulting foams were conducted at between 10 and 130° F. Initial k-factors are taken within 48 hours after removing foam skin with a band saw. Lower k-factors indicate better insulation values.
  • K factor (Btu ⁇ in/ft 2 ⁇ h ⁇ ° F.) 17.6 0.1337 0.1225 0.1252 0.1222 0.1289 32.0 0.1373 0.1285 0.1285 0.1250 0.1343 50.0 0.1430 0.1381 0.1342 0.1302 0.1419 75.2 0.1542 0.1500 0.1458 0.1416 0.1536 104.0 0.1677 0.1636 0.1592 0.1549 0.1670 K-factor is a key parameter for thermal insulation. Addition of HCFO1233zd to HFO1234ze improved the k-factor of foam made of HFO 1234ze alone.
  • sample C has the lowest free rise density in the study, suggesting a synergistic effect between HFO1233zd and HFO 1234ze.
  • a low free rise density results in lower fill weight and material saving.
  • the degree of frothing is getting less as the level of HCFO1233zd increase.
  • the degree of frothing is a process parameter that should be controlled. The less the degree of frothing, the easier the foam precursor flows, the better the foam quality, and the better the insulation properties.

Abstract

A blowing agent for thermosetting foams is disclosed. The blowing agent is a hydrofluoroolefin (HCFO), preferably HFCO-1234ze in combination with a hydrochlorofluoroolefin (HCFO) preferably one selected from HCFO-1233zd, HCFO-1223, HCFO-1233xf and mixtures thereof. The blowing agent is effective as a blowing agent in the manufacture of thermosetting foams.

Description

  • This application is a continuation of U.S. application Ser. No. 14/964,896 filed Dec. 10, 2015 which is a continuation of U.S. application Ser. No. 14/305,287 filed Jun. 16, 2014, now U.S. Pat. No. 9,228,071, which is a continuation of U.S. application Ser. No. 12/532,189 filed Sep. 21, 2009, abandoned, which is the United States national phase of and claims priority to International Application serial number PCT/US2008/058602 filed Mar. 28, 2008 which designated the United States, which claims priority to U.S. provisional application Ser. No. 60/908,751 filed Mar. 29, 2007, all of which are incorporated herein by references.
    • FIELD OF THE INVENTION
  • The present invention relates to blowing agents for thermosetting foams. More particularly, the present invention relates to the use of at least one hydrofluoroolefin such as HFO-1234ze in combination with at least one hydrochlorofluoroolefin (HCFO) such as HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof as a blowing agent in the manufacture of thermosetting foams.
    • BACKGROUND OF THE INVENTION
  • The Montreal Protocol for the protection of the ozone layer, signed in October 1987, mandated the phase out of the use of chlorofluorocarbons (CFCs). Materials more “friendly” to the ozone layer, such as hydrofluorocarbons (HFCs) eg HFC-134a replaced chlorofluorocarbons. The latter compounds have proven to be green house gases, causing global warming and were regulated by the Kyoto Protocol on Climate Change, signed in 1998. The emerging replacement materials, hydrofluoropropenes, were shown to be environmentally acceptable i.e. has zero ozone depletion potential (ODP) and acceptable low global warming potential (GWP).
  • Currently used blowing agents for thermoset foams include HFC-134a, HFC-245fa, HFC-365mfc that have relatively high global warming potential, and hydrocarbons such as pentane isomers flammable and have low energy efficiency. Therefore, new alternative blowing agents are being sought. Halogenated hydroolefinic materials such as hydrofluoropropenes and/or hydrochlorofluoropropenes have generated interest as replacements for HFCs. The inherent chemical instability of these materials in the lower atmosphere provides the low global warning potential and zero or near zero ozone depletion properties desired.
  • The object of the present invention is to provide novel compositions that can serve as blowing agents for thermosetting foams that provide unique characteristics to meet the demands of low or zero ozone depletion potential, lower global warming potential and exhibit low toxicity.
    • SUMMARY OF THE INVENTION
  • The present invention relates to the use of blowing agents with negligible (low or zero) ozone-depletion and low global warming potential based upon unsaturated. halogenated hydroolefins. The blowing agents comprise at least one hydrofluoroolefin preferably (HFO) HFO-1234ze in a combination with at least one hydrochlorofluoroolefin (HCFO) such as HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof. HFO-1234ze is 1,3,3,3-tetrafluoropropene; HCFO 1223 dichlorotrifluoropropene; HCFO-1233zd is 1-chloro-3,3,3-trifluoropropene; HCFO1233xf is 2-chloro-3,3,3-trifluoropropene. The composition can further comprises an additional hydrofiuoroolefins (HFO), a hydrofluorocarbon, a hydrocarbon, an alcohol, an aldehyde, a ketone ether/diether, an ester, carbon dioxide and mixtures thereof.
  • Hydrofluoroolefin (HFO) materials have been proposed as blowing agents which exhibit a low global warming potential and a low ozone depletion value. The low global warming potential and a low ozone depletion value are a result of the atmospheric degradation of the hydrofluoroolefins.
  • The hydrofluoroolefin, preferably HFO-1234ze in combination with a hydrochlorofluoroolefin (HCFO) preferably selected from HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof combination can be used as a foaming agent for thermosetting foams by being mixed in a polyols mixture. The resulted products show superior quality including decreased density and improved k-factor. The foaming agent dissolves in thermosetting polymers, and provides a degree of plasticization sufficient to produce acceptable foams.
  • The preferred blowing agent composition, hydrofluoroolefin, preferably HFO-1234ze in combination with a hydrochlorofluoroolefin (HCFO) preferably selected from HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof of the present invention exhibits good solubility in polyol mixture used in producing polyurethane and polyisocyanurate foams. All references herein to HFO-1234ze include the cis isomer, the trans isomers and mixtures thereof. A major portion of the composition of the present invention is the hydrofluoroolefin, preferably HFO-1234ze component. A preferred ratio of the hydrofluoroolefin, preferably HFO-1234ze component in combination with a hydrochlorofluoroolefin (HCFO) preferably selected from HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof is more than about 5 wt % hydrofluoroolefin, preferably HFO-1234ze.
  • The hydrofluoroolefin, preferably HFO-1234ze in combination with a hydrochlorofluoroolefin (HCFO) preferably selected from HCFO-1223, HCFO-1233zd, HCFO-1233xf and mixtures thereof composition of the present invention may be used in combination with low or zero ozone depletion value materials including but not limited to: (a) hydrofluorocarbons including but not limited to difluoromethane (HFC32); 1,1,1-trifluoroethane (143a); 1,1,1,2,2-pentafluoroethane (HFC125); 1,1,2,2-tetrafluoroethane (HFC134); 1,1,1,2-tetrafluoroethane (HFC134a); 1,1-difluoroethane (HFC152a); 1,1,1,2,3,3,3-heptafluoropropane (HFC227ea); 1,1,1,3,3-pentafluoropropane (HFC245fa); 1,1,1,3,3-pentafluorobutane (HFC365mfc) and 1,1,1,2,2,3,4,5,5,5-decafluoropentane (HFC4310mee), (b) additional hydrofluoroolefins, other than HFO-1234ze, including but not limited to tetrafluoropropenes such as HFO-1234yf; trifluoropropenes such as HFO1234zf; all tetrafluorobutene isomers (HFO1354); all pentafluorobutene isomers (HFO1345); all hexafluorobutene isomers (HFO1336); all heptafluorobutene isomers (HFO1327); all heptafluoropentene isomers (HFO1447); all octafluoropentene isomers (HFO1438) and all nonafluoropentene (HFO1429) (c) hydrocarbons including but not limited to, pentane isomers, butane isomers, (d) C1 to C5 alcohols, C1 to C4 aldehydes, C1 to C4 ketones, C1 to C4 esters, C1 to C4 ethers and diethers and carbon dioxide
  • The foamable compositions of the present invention generally includes one or more components capable of forming foam having a generally cellular structure and a blowing agent, typically in a combination, in accordance with the present invention. In certain embodiments, the one or more components comprise a thermosetting composition capable of forming foam and/or foamable compositions. Examples of thermosetting compositions include polyurethane and polyisocyanurate foam compositions, and also phenolic foam compositions. In such thermosetting foam embodiments, one or more of the present compositions are included as or part of a blowing agent in a foamable composition, or as a part of a two or more part foamable composition, which preferably includes one or more of the components capable of reacting and/or foaming under the proper conditions to form a foam or cellular structure.
  • The invention also relates to foam, and preferably closed cell foam, prepared from a polymer foam formulation containing a blowing agent comprising the compositions of the invention. In yet other embodiments, the invention provides foamable compositions comprising thermosetting foams, such as polyurethane and polyisocyanurate foams, preferably low-density foams, flexible or rigid.
  • It will be appreciated by those skilled in the art that the order and manner in which the blowing agent combination of the present invention is formed and/or added to the foamable composition does not generally affect the operability of the present invention. For example, in the case of polyurethane foams, it is possible that the various components of the blowing agent combination, and even the components of the present composition, not be mixed in advance of introduction to the foaming equipment, or even that the components are not added to the same location in the foaming equipment. Thus, in certain embodiments it may be desired to introduce one or more components of the blowing agent combination in a blender with the expectation that the components will come together in the foaming equipment and/or operate more effectively in this manner. Nevertheless, in certain embodiments, two or more components of the blowing agent combination are combined in advance and introduced together into the foamable composition, either directly or as part of premix that is then further added to other parts of the foamable composition.
    • EXAMPLES Example 1 Foam Preparation
  • The foam was made by a small polyurethane dispenser. The dispenser consists of two pressurized cylinders, and pressure can be adjusted by regulators. B-side (polyols) mixtures were pre-blended and then charged into pressurized cylinders, and A-side consists of MDI. Blowing agents were then added into B-side cylinder and mixed thoroughly. The cylinders were connected to dispensing gun equipped with a static mixer. The pressures of both cylinders were adjusted so that desired ratio of A and B sides can be achieved. The formulations tested (all had an Iso Index on ROH of 110) each contained Rubinate M, a polymeric methylene diphenyl diisocyanate (MDI) available from Huntsman; Jeffol SG-360 and R-425-X, polyols from Huntsman; TEAP-265, a polyol from Carpenter Company. TegostabB8465 a surfactant available from Evonik-Degussa. Jeffcat TD33A and ZR-70 are catalysts from Huntsman. NP 9.5, a compatibilizer from Huntsman. Total blowing level is 26.0 mls/g.
  • TABLE 1
    Formulation for HFO1234ze and HCFO1233zd (trans)
    Formulation (wt %)
    A B C D E
    Jeffol SG-360 14.93 15.07 14.80 14.77 15.35
    Jeffol R-425-X 4.27 4.31 4.23 4.22 4.39
    TEAP-265 8.53 8.61 8.45 8.44 8.77
    DEG 2.13 2.15 2.11 2.11 2.19
    Jeffcat TD33A 0.23 0.23 0.23 0.23 0.23
    Jeffcat ZR70 0.23 0.23 0.23 0.23 0.23
    Tegostab B8465 0.89 0.90 0.90 0.90 0.90
    NP 9.5 6.50 6.50 6.50 6.50 6.50
    Water 0.42 0.42 0.42 0.42 0.42
    HFO1234ze 11.56 9.65 1.21 0 0
    HCFO1233zd 0 1.08 10.74 12.11 0
    HFC 134a 0 0 0 0 9.47
    Rubinate M 50.4 50.9 50.2 50.1 51.6
    A side/B side 1.02 1.04 1.01 1.00 1.06

    Table 1 Summarizes the formulation for each run. HFC134a was used as reference blowing agent.
    • Example 2 B-Side Vapor Pressure
  • TABLE 2
    HFO1234ze Vapor Pressure in B-side mixtures
    A B C D
    B-side Vapor Pressure (psig) 44.0 39.0 0 0
    HFO 1234ze (wt %) 23.3 19.6 2.4 0
    HCFO 1233zd (wt %) 0 2.2 21.6 24.3
    Pressure/concentration* 189 199 0 0
    *B-side vapor pressure/HFO1234ze concentration
  • The results as shown in Table 2 illustrate that use of HCFO 1233zd can reduce the vapor pressure of b-side mixture. The lower the vapor pressure, the better solubility of a blowing agent. From test A to C, as HFCO1234ze concentration decreases, the pressure decreases, however, for sample C, the vapor pressure was zero psig, this is an unexpected result.
    • Example 3 K-Factor
  • As shown in Table 3, the k-factor measurements (ASTM C518) on the resulting foams were conducted at between 10 and 130° F. Initial k-factors are taken within 48 hours after removing foam skin with a band saw. Lower k-factors indicate better insulation values.
  • TABLE 3
    Comparison of k-factors
    Temperature A B C D E
    (° F.) K factor (Btu · in/ft2 · h · ° F.)
    17.6 0.1337 0.1225 0.1252 0.1222 0.1289
    32.0 0.1373 0.1285 0.1285 0.1250 0.1343
    50.0 0.1430 0.1381 0.1342 0.1302 0.1419
    75.2 0.1542 0.1500 0.1458 0.1416 0.1536
    104.0 0.1677 0.1636 0.1592 0.1549 0.1670

    K-factor is a key parameter for thermal insulation. Addition of HCFO1233zd to HFO1234ze improved the k-factor of foam made of HFO 1234ze alone.
    • Examples 4 Foam Volume Changes
  • TABLE 4
    Comparison of foam volume change
    Sample Volume Change (%)
    A −3.4
    B +5.0
    C +24.3
    D +21.3
    E −15.0
  • Thermal and humid aging test was done according to ASTM D2126. The foam was kept in the oven for 7 days at 70° C. and 97% relative humidity. The results were summarized in Table 4. It should be pointed out that the formula was not optimized for dimensional stability, but for study of degree of plasticization. It is known to people skilled in the art that HFC134a has poor solubility in polyol mixtures and polymers, indicating it has a relatively low degree of plasticization in polyurethane. In sample E, the foam had a 15% volume reduction, suggesting that cells burst. The polymer had a lower elasticity as a result of the low degree of plasticization. However as shown in sample D that only HCFO1233zd was used, volume actually increased, it is opposite to sample E. Sample A contained HFO1234ze only, and the result shown a reduction of volume, indicating some cells bursted. Sample C contained both HCFO1233zd and HFO134ze; the volume increased even more that sample D. These results are unexpected.
    • Example 5 Processibility
  • TABLE 5
    Free rise density
    Sample Free Rise Density (pcf)
    A 1.78
    B 1.80
    C 1.64
    D 1.71
    E 2.01
  • As shown in Table 5, sample C has the lowest free rise density in the study, suggesting a synergistic effect between HFO1233zd and HFO 1234ze. A low free rise density results in lower fill weight and material saving.
  • TABLE 6
    Degree of frothing
    Sample Degree of frothing
    A High
    B High
    C None
    D None
    E Very high
  • Table 5 shown the degree of frothing is getting less as the level of HCFO1233zd increase. The degree of frothing is a process parameter that should be controlled. The less the degree of frothing, the easier the foam precursor flows, the better the foam quality, and the better the insulation properties.
  • Although the invention is illustrated and described herein with reference to specific embodiments, it is not intended that the appended claims be limited to the details shown. Rather, it is expected that various modifications may be made in these details by those skilled in the art, which modifications may still be within the spirit and scope of the claimed subject matter and it is intended that these claims be construed accordingly.

Claims (16)

1. A foam product comprising a thermosetting foam material selected from the group consisting of polyurethane, polyisocyanate and phenolic and a blowing agent comprising 1-chloro-3,3,3-trifluoropropene and 1,3,3,3-tetrafluoropropene.
2. The foam product of claim 1, further comprising a coblowing agent selected from non-hydrofluoroolefin and non-hydrochlorofluoroolefin hydrofluorocarbons.
3. The foam product of claim 2 wherein said hydrofluorocarbon is selected from the group consisting of difluoromethane (HFC32); 1,1,1,2,2-pentafluoroethane (HFC125); 1,1,1-trifluoroethane (143a); 1,1,2,2-tetrafluoroethane (HFC134); 1,1,1,2-tetrafluomethane (HFC134a); 1,1-difluoroethane (HFC152a); 1,1,1,2,3,3,3-heptafluoropropane (HFC227ea); 1,1,1,3,3-pentafluoropropane (HFC245fa); 1,1,1,3,3-pentafluorobutane (HFC365mfc) and 1,1,1,2,2,3,4,5,5,5-decafluoropentane (HFC4310mee).
4. The foam product of claim 3, further comprising a second hydrofluoroolefin selected from the group consisting of tetrafluoropropenes; trifluoropropenes; tetrafluorobutene isomers; pentafluorobutene isomers; hexafluorobutene isomers; heptafluorobutene isomers; heptafluoropentene isomers; octafluoropentene isomers and nonafluoropentene isomers.
5. The foam product of claim 2 further comprising a component selected from the group consisting of a second hydrofluoroolefin (FIFO), a hydrofluorocarbon, a hydrocarbon, an alcohol, an aldehyde, a ketone, an ether/diether, an ester, carbon dioxide and mixtures thereof.
6. The foam product of claim 2, farther comprising a second hydrofluoroolefin selected from the group consisting of HFO-1234yf, HFO-1243zf, HFO-1354, HFO-1345, HFO-1336, HFO-1327, HFO-1447, HFO-1438, and HFO-1429.
7. The foam product of claim 2 comprising from about 10-15 wt % of said 1,3,3,3-tetrafluoropropene and from about 85-90 wt % of said 1-chloro-3,3,3-trifluoropropene.
8. The foam product of claim 1 wherein the weight ratio of 1,3,3,3-tetrafluoropropene to 1-chloro-3,3,3-trifluoropropene ranges from 90:10% to 10:90 percent.
9. A foam product comprising:
a thermosetting foam material selected from the group consisting of polyurethane, polyisocyanate and phenolic and a blowing agent comprising 1-chloro-3,3,3-trifluoropropene and 1,3,3,3-tetrafluoropropene wherein said foam product exhibits a positive volume change in thermal and humid aging test according to ASTM D2126.
10. The foam product of claim 9, further comprising a coblowing agent selected from non-hydrofluoroolefin and non-hydrochlorofluoroolefin hydrofluorocarbons.
11. The foam product of claim 10 wherein said hydrofluorocarbon is selected from the group consisting of difluoromethane (HFC32); 1,1,1,2,2-pentafluoroethane (HFC125); 1,1,1-trifluoroethane (143a); 1,1,2,2-tetrafluoroethane (HFC134); 1,1,1,2-tetrafluoroethane (HFC134a); 1,1-difluoroethane (HFC152a); 1,1,1,2,3,3,3-heptafluoropropane (HFC227ea); 1,1,1,3,3-pentafluoropropane (HFC245fa); 1,1,1,3,3-pentafluorobutane (HFC365mfc) and 1,1,1,2,2,3,4,5,5,5-decafluoropentane (HFC4310mee).
12. The foam product of claim 11, further comprising a second hydrofluoroolefin selected from the group consisting of tetrafluoropropenes; trifluoropropenes; tetrafluorobutene isomers; pentafluorobutene isomers; hexafluorobutene isomers; heptafluorobutene isomers; heptafluoropentene isomers; octafluoropentene isomers and nonafluoropentene isomers.
13. The foam product of claim 10 further comprising a component selected from the group consisting of a second hydrofluoroolefin (HFO), a hydrofluorocarbon, a hydrocarbon, an alcohol, an aldehyde, a ketone, an ether/diether, an ester, carbon dioxide and mixtures thereof.
14. The foam product of claim 10, further comprising a second hydrofluoroolefin selected from the group consisting of HFO-1234yf, HFO-1243zf, HFO-1354, HFO-1345, HFO-1336, HFO-1327, HFO-1447, HFO-1438, and HFO-1429.
15. The foam product of claim 10 comprising from about 10-15 wt % of said 1,3,3,3-tetrafluoropropene and from about 85-90 wt % of said 1-chloro-3,3,3-trifluoropropene.
16. The foam product of claim 9 wherein the weight ratio of 1,3,3,3-tetrafluoropropene to 1-chloro-3,3,3-trifluoropropene ranges from 90:10% to 10:90 percent.
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