ISO 307:2019

Plastics — Polyamides — Determination of viscosity number

Publication date: 26 pri 2019

General information

Current stage: 90.92 Effective date: 21 nën 2024

Originator: ISO

Owner: ISO/TC 61/SC 9

Type: International Standard

ICS: 83.080.20

Gjuha: anglisht frëngjisht

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Statusi: Publikuar

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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

WITHDRAWN
ISO 307:2007

WITHDRAWN
ISO 307:2007/Amd 1:2013

NOW

PUBLISHED
ISO 307:2019
90.92 Standard to be revised
21 nën 2024

REVISED BY

IN_DEVELOPMENT
ISO/CD 307