Use of semi-aromatic copolyamide for transporting refrigerant fluid

Use of semi-aromatic copolyamide for transporting refrigerant fluid

  • CN 105,026,153 A
  • Filed: 02/13/2014
  • Published: 11/04/2015
  • Est. Priority Date: 02/18/2013
  • Status: Active Application
First Claim
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1. vapor compression circuit element, it comprises at least one layer be made up of the composition of the copolyamide comprising formula X/10.T/Y, wherein:

  • -X represents the residue of the aliphatic amino acid comprising 8-18 carbon atom or lactams or unit X 1.X 2, X 1.X 2represent the residue of the condensation of the aliphatic diamine deriving from and comprise 6-18 carbon atom and fat (ring) the race dicarboxylic acids comprising 6-18 carbon atom;

    -10.T represents the residue of the condensation from decamethylene diamine and terephthalic acid (TPA);

    With-Y represents that Y is different from unit 10.T from aromatic dicarboxylic acid and the residue of condensation of aliphatic diamine comprising 9-14 carbon atom;

    The molar ratio of the unit 10.T in described copolyamide is greater than 0%;

    Unit Y is 0%-30% relative to the molar ratio of the summation of unit 10.T and Y;

    WithThe ratio of unit X is 0.4-0.8 moles/mole half aromatic units 10.T and Y.

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