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ILNAS-EN ISO 307:2019 Edition 05/2019
Plastics - Polyamides - Determination of viscosity number (ISO 307:2019)
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  • 53.4 / copy
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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, observing the particular conditions specified in this document.

Status

Standard - Active

Origin

Technical Committee :
CEN/TC 249 : Plastics

Implementation

start of the vote on the project    21/12/2017   date of ratification (dor)    19/03/2019
end of the vote on the project    16/03/2018   date of anouncement (doa)    31/08/2019
start of the vote on the final project    20/12/2018   date of publication (dop)    30/11/2019
end of the vote on the final project    18/02/2019   date of withdrawal (dow)    30/11/2019


Publication Official Journal
of the Grand-Duchy of Luxembourg
18/06/2019
Reference Mémorial A N° 420

Relations

Relations to older standards
ILNAS-EN ISO 307:2007
ILNAS-EN ISO 307:2007/A1:2013

Relations to international standards
ISO 307 
ISO 307:2019 

International Classification for Standards (ICS codes) :

83.080.20 : Thermoplastic materials

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