Claims
- 1. A heat exchanger comprising a plastic heat exchange surface material, said heat exchanger surface material comprising a multilayer material which comprises a layer of a thermotropic liquid crystalline polymer and a layer of isotropic thermoplastic, said heat exchange surface material having two sides, a first side in contact with a first fluid flowing past such first side, and a second side in contact with a second fluid flowing past such second side, wherein said heat exchange surface material separates said first fluid and said second fluid.
- 2. The heat exchanger as recited in claim 1 which is a liquid-liquid heat exchanger.
- 3. The heat exchanger as recited in claim 1 which is a liquid-gas heat exchanger.
- 4. The heat exchanger as recited in claim 1 which is a gas-gas heat exchanger.
- 5. The heat exchanger as recited in claim 1 which is part of an automobile or other vehicle, an aircraft, a comfort heat exchanger, a heater, an air conditioner, or a ventilator.
- 6. The liquid gas heat exchanger as recited in claim 3 which is a cooler for an automotive gasoline or diesel engine.
- 7. The heat exchanger as recited in claim 6 wherein said liquid is water, water and a glycol, or water and an alcohol, as said gas is air.
- 8. The heat exchanger as recited in claim 1 which is a tube heat exchanger.
- 9. The heat exchanger as recited in claim 1 which is a plate heat exchanger.
- 10. The heat exchanger as recited in claim 1 where said thermotropic liquid crystalline polymer is a polyester or a poly(ester-amide).
- 11. The heat exchanger as recited in claim 10 wherein at least about 50 mole percent total of bonds to amide and ester groups are to carbon atoms which are part of aromatic rings.
- 12. The heat exchanger as recited in claim 1 wherein said thermoplastic is a polyamide.
- 13. The heat exchanger as recited in claim 6 or 7 wherein said isotropic thermoplastic is a polyamide.
- 14. The heat exchanger as recited in claim 13 wherein said thermotropic liquid crystalline polymer is a polyester or a poly(ester-amide).
- 15. The heat exchanger as recited in claim 12, wherein said polyamide is nylon-6, nylon-6,6, or a copolymer of terephthalic acid, 1,6-diaminohexane and 2-methyl-1,5-diaminopentane wherein said 1,6-diaminohexane is about 30 to 70 mole percent of total diamine present.
- 16. The heat exchanger as recited in claim 13 wherein said polyamide is nylon-6, nylon-6,6, or a copolymer of terephthalic acid, 1,6-diaminohexane and 2-methyl-1,5-diaminopentane wherein said 1,6-diaminohexane is about 50 mole percent of total diamine present.
- 17. The heat exchanger as recited in claim 14 wherein said polyamide is nylon-6, nylon-6,6, or a copolymer of terephthalic acid, 1,6-diaminohexane and 2-methyl-1,5-diaminopentane wherein said 1,6-diaminohexane is about 30 to about 70 mole percent of the total diamine present.
- 18. The heat exchanger as recited in claim 1 wherein one or more tie layers are also present in said heat exchange surface material.
- 19. The heat exchanger as recited in claim 1, wherein:(a) two or more layers of said thermotropic liquid polymer are present; or (b) two or more layers of said isotropic thermoplastic are present; or (c) two or more layers of said thermotropic liquid crystalline polymer and two or more layers of said isotropic thermoplastic are present.
Parent Case Info
This is a continuation of application Ser. No. 08/906,954, filed Aug. 5, 1997 and now abandoned, which claims priority from provisional application U.S. Serial No. 60/025,188, filed Sep. 11, 1996.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
6146764 |
Suokas et al. |
Nov 2000 |
A |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/025188 |
Sep 1996 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
08/906954 |
Aug 1997 |
US |
Child |
10/322178 |
|
US |