USE OF SEMI-AROMATIC COPOLYAMIDE FOR TRANSPORTING REFRIGERANT FLUID

• US 20150377389A1
• Filed: 02/13/2014
• Published: 12/31/2015
• Est. Priority Date: 02/18/2013
• Status: Active Grant

• Current Assignee: Arkema France (Arkema)
• Original Assignee: Arkema France (Arkema)
• Inventors: BLONDEL, Philippe, BRULE, Benoit, GAMACHE, Eric, MEURICE PIERRAT, Estelle
• Granted Patent: US 10,605,385 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B29C 45/0001 characterised by the choice of material
• CPC Class Codes: B29C 48/022 characterised by the choice of material
• CPC Class Codes: B29C 49/0005 characterised by the material
• CPC Class Codes: B29K 2077/00 Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
• CPC Class Codes: B29L 2023/005 Hoses, i.e. flexible
• CPC Class Codes: B32B 1/08 Tubular products
• CPC Class Codes: B32B 2250/04 4 layers
• CPC Class Codes: B32B 2262/0269 Aromatic polyamide fibres
• CPC Class Codes: B32B 2262/0276 Polyester fibres
• CPC Class Codes: B32B 2262/062 Cellulose fibres, e.g. cotton
• CPC Class Codes: B32B 2262/101 Glass fibres
• CPC Class Codes: B32B 2262/103 Metal fibres
• CPC Class Codes: B32B 2262/106 Carbon fibres, e.g. graphite fibres
• CPC Class Codes: B32B 2262/14 Mixture of at least two fibres made of different materials
• CPC Class Codes: B32B 2264/10 Inorganic particles
• CPC Class Codes: B32B 2264/101 Glass
• CPC Class Codes: B32B 2264/102 Oxide or hydroxide
• CPC Class Codes: B32B 2264/108 Carbon, e.g. graphite particles
• CPC Class Codes: B32B 2270/00 Resin or rubber layer containing a blend of at least two different polymers
• CPC Class Codes: B32B 2307/306 Resistant to heat
• CPC Class Codes: B32B 2307/3065 : Flame resistant or retardant, fire resistant or retardant
• CPC Class Codes: B32B 2307/308 : Heat stability
• CPC Class Codes: B32B 2307/54 : Yield strength; Tensile strength
• CPC Class Codes: B32B 2307/714 : Inert, i.e. inert to chemical degradation, corrosion
• CPC Class Codes: B32B 2307/7265 : Non-permeable
• CPC Class Codes: B32B 2307/732 : Dimensional properties
• CPC Class Codes: B32B 2307/734 : Dimensional stability
• CPC Class Codes: B32B 2307/748 : Releasability
• CPC Class Codes: B32B 25/08 : of synthetic resin
• CPC Class Codes: B32B 25/10 : next to a fibrous or filamentary layer
• CPC Class Codes: B32B 25/14 : comprising synthetic rubber copolymers B32B25/18 and B32B25/20 take precedence
• CPC Class Codes: B32B 25/16 : comprising polydienes homopolymers or poly-halodienes homopolymers B32B25/12 takes precedence
• CPC Class Codes: B32B 25/18 : comprising butyl or halobutyl rubber
• CPC Class Codes: B32B 2597/00 : Tubular articles, e.g. hoses, pipes
• CPC Class Codes: B32B 2605/08 : Cars
• CPC Class Codes: B32B 27/18 : characterised by the use of special additives
• CPC Class Codes: B32B 27/20 : using fillers, pigments, thixotroping agents
• CPC Class Codes: B32B 27/22 : using plasticisers
• CPC Class Codes: B32B 27/285 : comprising polyethers
• CPC Class Codes: B32B 27/286 : comprising polysulphones; polysulfides
• CPC Class Codes: B32B 27/302 : comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
• CPC Class Codes: B32B 27/306 : comprising vinyl acetate or vinyl alcohol (co)polymers
• CPC Class Codes: B32B 27/308 : comprising acrylic (co)polymers
• CPC Class Codes: B32B 27/32 : comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: B32B 27/34 : comprising polyamides
• CPC Class Codes: B32B 27/36 : comprising polyesters
• CPC Class Codes: B32B 27/38 : comprising epoxy resins
• CPC Class Codes: B32B 5/024 : Woven fabric
• CPC Class Codes: B32B 5/026 : Knitted fabric
• CPC Class Codes: B32B 5/08 : the fibres or filaments of a layer being of different substances , e.g. conjugate fibres, mixture of different fibres
• CPC Class Codes: C08G 69/26 : derived from polyamines and polycarboxylic acids
• CPC Class Codes: C08G 69/265 : from at least two different diamines or at least two different dicarboxylic acids
• CPC Class Codes: C08G 69/36 : derived from amino acids, polyamines and polycarboxylic acids
• CPC Class Codes: C08L 101/00 : Compositions of unspecified macromolecular compounds
• CPC Class Codes: C08L 23/26 : modified by chemical after-treatment
• CPC Class Codes: C08L 51/06 : grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
• CPC Class Codes: C08L 77/02 : Polyamides derived from omega-amino carboxylic acids or from lactams thereof C08L77/10 takes precedence
• CPC Class Codes: C08L 77/06 : Polyamides derived from polyamines and polycarboxylic acids C08L77/10 takes precedence
• CPC Class Codes: C09K 2205/122 : Halogenated hydrocarbons
• CPC Class Codes: C09K 2205/126 : Unsaturated fluorinated hydrocarbons
• CPC Class Codes: C09K 2205/22 : All components of a mixture being fluoro compounds
• CPC Class Codes: C09K 5/044 : comprising halogenated compounds
• CPC Class Codes: C09K 5/045 : containing only fluorine as halogen
• CPC Class Codes: F16L 11/085 : comprising one or more braided layers in combination with layers of a helically wound core or wire F16L11/088
• CPC Class Codes: F25B 13/00 : Compression machines, plants or systems, with reversible cycle defrosting cycles F25B47/02
• CPC Class Codes: F25B 2400/121 : using R1234
• CPC Class Codes: F25B 41/40 : Fluid line arrangements

Abstract

The invention relates to the use of a layer consisting of a composition comprising a copolyamide of formula X/10.T/Y for transporting a heat transfer fluid in a vapor compression circuit, wherein: X represents either the residues of an aliphatic amino acid comprising between 8 and 18 carbon atoms, or a lactam, or the unit X₁.X₂ representing the residues resulting from the condensation of an aliphatic diamine comprising between 6 and 18 carbon atoms and a (cyclo)aliphatic diacid comprising between 6 and 18 carbon atoms; 10.T represents the residues resulting from the condensation of a decanediamine and terephthalic acid; and Y represents the residues resulting from the condensation of an aliphatic diamine comprising between 9 and 14 carbon atoms and an aromatic diacid, Y being different from the unit 10.T; the molar proportion of 10.T units being higher than 0%.

Claims

1. A vapor compression circuit element comprising at least one layer composed of a composition comprising copolyamide of formula X/10.T/Y, in which:

X represents alternatively the residues of an aliphatic amino acid comprising from 8 to 18 carbon atoms, or a lactam, or the unit X₁.X₂ which represents the residues resulting from the condensation of an aliphatic diamine comprising from 6 to 18 carbon atoms and a (cyclo)aliphatic dicarboxylic acid comprising from 6 to 18 carbon atoms;

10.T represents the residues from the condensation of a decane diamine and terephthalic acid; and

Y represents the residues from the condensation of an aliphatic diamine comprising from 9 to 14 carbon atoms and an aromatic dicarboxylic acid, Y being different from the unit 10.T;

the molar proportion of units 10.T in the copolyamide being greater than 0%;

the molar proportion of the units Y relative to the total of units 10.T and Y being from 0% to 30%; and

the proportion of units X being from 0.4 to 0.8 mol per mole of semi-aromatic units 10.T and Y.

2. The vapor compression circuit element as claimed in claim 1, wherein the copolyamide of formula X/10.T/Y is a copolyamide of formula X/10.T.

3. The vapor compression circuit element as claimed in claim 1, wherein X represents either the residues of an aliphatic amino acid comprising from 10 to 12 carbon atoms or the unit X₁.X₂ which represents the residues resulting from the condensation of an aliphatic diamine comprising from 6 to 12 carbon atoms and an aliphatic diacid comprising from 6 to 12 carbon atoms.

4. The vapor compression circuit element as claimed in claim 1, wherein Y represents a unit 10.I, 9.T, 12.T, or 14.T.

5. The vapor compression circuit element as claimed in claim 1, wherein the copolyamide of formula X/10.T/Y is selected from the group consisting of copolyamides of formulae 11/10.T, 12/10.T, 6.10/10.T, 6.12/10.T, 10.6/10.T, 10.10/10.T, 10.12/10,T, 12.12/10.T, and 10.14/10.T.

6. The vapor compression circuit element as claimed in claim 1, wherein the proportion of units X in the copolyamide is from 0.5 to 0.7 mol per mole of semi-aromatic units 10.T and Y.

7. The vapor compression circuit element as claimed in claim 1, wherein the copolyamide is present in the composition in a proportion by mass of 30% to 99%;

and/or wherein the composition further comprises at least one of;

optionally, one or more functionalized or non-functionalized polyolefins;

optionally, one or more plasticizers;

optionally, one or more additives selected from the group consisting of conversion aids, fillers, heat stabilizers, UV stabilizers, nucleating agents, dyes, pigments, mold release agents, flame retardants, surfactants, fluorescent whiteners, antioxidants, and mixtures thereof.

8. The vapor compression circuit element as claimed in claim 1, wherein the vapor compression circuit element is suitable for transporting a heat transfer fluid selected from the group consisting of hydrocarbon, hydrofluorocarbon, ether, hydrofluoroether, and fluoroolefin compounds.

9. The vapor compression circuit element as claimed in claim 8, wherein the heat transfer fluid is admixed with a lubricant.

10. The vapor compression circuit element as claimed in claim 1, wherein the vapor compression circuit element belongs to a vapor compression circuit integrated in a device selected from the group consisting of mobile and stationary air conditioning devices, refrigeration devices, freezing devices, Rankine-cycle and heat-pump heating devices.

11. The vapor compression circuit element as claimed in claim 1, wherein the vapor compression circuit element is a connection element or a pipe.

12. The vapor compression circuit element as claimed in claim 1, wherein said layer composed of a composition comprising a copolyamide is disposed on an inner surface of the element.

13. A vapor compression circuit element as claimed in claim 1, wherein the vapor compression circuit element is a multilayer tube comprising in succession:

an inner layer which is said layer composed of a first composition comprising a copolyamide;

optionally, a first intermediate layer, composed of a first composition comprising an elastomeric material;

optionally, a second intermediate layer, composed of a reinforcing textile; and

an outer layer, composed of a second composition comprising an elastomeric material;

each of the first composition and the second composition comprising an elastomeric material.

14. The vapor compression circuit element as claimed in claim 1, wherein the vapor compression circuit element is an extruded article.

15. A heat transfer device comprising a vapor compression circuit which comprises at least one vapor compression circuit element as claimed in claim 1.

16. The heat transfer device as claimed in claim 15, wherein the heat transfer device is selected from the group consisting of mobile and stationary air conditioning devices, refrigeration devices, freezing devices, Rankine-cycle and heat-pump heating devices.

17. The heat transfer device as claimed in claim 15, wherein the vapor compression circuit contains a heat transfer fluid selected from the group consisting of hydrocarbon, hydrofluorocarbon, ether, hydrofluoroether, and fluoroolefin compounds.

18. The heat transfer device as claimed in claim 17, wherein the heat transfer fluid is admixed with a lubricant.

23. A method for heating or cooling a liquid or a body by means of a vapor compression circuit containing a heat transfer fluid, said method comprising in succession the evaporation of the heat transfer fluid, the compression of the heat transfer fluid, the condensation of the heat fluid, and the expansion of the heat transfer fluid, wherein the vapor compression circuit comprises a vapor compression circuit element as claimed in claim 1.

24. The method as claimed in claim 23, which is a method for heating, air conditioning, refrigerating, or freezing.

25. The method as claimed in claim 23, wherein the heat transfer fluid is selected from the group consisting of hydrocarbon, hydrofluorocarbon, ether, hydrofluoroether and fluoroolefin compounds.

26. A method for producing the circuit element as claimed in claim 1, comprising a step of applying a layer of a composition comprising a copolyamide of formula X/10.T/Y.

27. The method as claimed in claim 26, wherein said layer is applied by injection molding, extrusion, extrusion-blow molding, coextrusion, or multiple injection molding.

28. The method as claimed in claim 26, wherein the circuit element is a multilayer tube, comprising the successive extrusion, on a mandrel, of an inner layer, optionally of a first intermediate layer, optionally of a second intermediate layer then of an outer layer.

19. (canceled)

20. (canceled)

21. (canceled)

22. (canceled)