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prSRPS EN ISO 307:2024

Plastics — Polyamides — Determination of viscosity number

General information

10.99     Dec 12, 2024

ISS

G061

European Norm

English  

Scope

This document 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 46, PA 6, PA 66, PA 69, PA 610, PA 612, PA 11, PA 12, PA 6T/66, PA 6I/6T, PA 6T/6I/66, PA 6T/6I, PA 6I/6T/66 and PA MXD6 as defined in ISO 16396-1, as well as to copolyamides, compounds of polyamides 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 cross-linking 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 document.

Life cycle

PREVIOUSLY

PUBLISHED
SRPS EN ISO 307:2019

NOW

PROJECT
prSRPS EN ISO 307:2024
10.99 New project approved
Dec 12, 2024

Related project

Adopted from prEN ISO 307 rev IDENTICAL

Adopted from ISO/DIS 307 IDENTICAL