Abstract

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 1628‑1:2024, observing the particular conditions specified in this document.

Begin

2024-12-19

WI

00249A71

Planned document number

DIN EN ISO 307

Project number

05402371

Responsible national committee

NA 054-02-10 AA - Thermoplastic materials  

Responsible european committee

CEN/TC 249 - Plastics  

Responsible international committee

ISO/TC 61/SC 9/WG 8 - Polyamides  

draft standard

Plastics - Polyamides - Determination of viscosity number (ISO/DIS 307:2026); German and English version prEN ISO 307:2026
2026-07
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previous edition(s)

Plastics - Polyamides - Determination of viscosity number (ISO 307:2019); German version EN ISO 307:2019
2019-11

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