Standard

NS-EN ISO 307:1997

Tilbaketrukket

Merknad: Denne standarden har en ny utgave: NS-EN ISO 307:2019

Forhåndsvisning

Rettelser og tillegg kjøpes separat.

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Omfang

This International Standard specifies a method for the determination of the viscosity number of dilute solutions of polyamides in certain specified solvents. The method is applicable to the polyamides designated PA 6, PA 66, PA 69, PA 610, PA 612, PA 11, PA 12 and PA MXD6 as defined in ISO 1874-1, as well as to copolyamides and other polyamides that are soluble in one of the specified solvents under the specified conditions. The method is not applicable to polyamides produced by anionic polymerization of lactams or produced with crosslinking agents; such polyamides are normally insoluble in the specified solvents. The viscosity number is determined by the general procedure specified in ISO 1628-1, observing the particular conditions specified in this International Standard. The determination of the viscosity number of a polyamide provides a measure of the relative molecular mass of the polymer.

Dokumentinformasjon

  • Standard fra SN
  • Publisert:
  • Tilbaketrukket:
  • Utgave: 1
  • Versjon: 1
  • Varetype: NAT
  • ICS 83.080.20
  • National Committee CEN/TC 249/SC 1/WG 10

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