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BS EN ISO 1628-5:2015

BS EN ISO 1628-5:2015

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Current

The latest, up-to-date edition.

Plastics. Determination of the viscosity of polymers in dilute solution using capillary viscometers Thermoplastic polyester (TP) homopolymers and copolymers

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

03-31-2015

Publisher

British Standards Institution

National foreword
1 Scope
2 Normative references
3 Principle
4 Solvents
5 Apparatus
6 Solvent and solution
7 Procedure
8 Expression of results
9 Test report
Annex A (informative) - Round-robin testing

Defines a method for the determination of the viscosity number (also referred to as 'reduced viscosity') of dilute solutions of thermoplastic polyesters (TPs) in certain specified solvents.

This part of ISO1628 specifies a method for the determination of the viscosity number (also referred to as “reduced viscosityâ€??) of dilute solutions of thermoplastic polyesters (TPs) in certain specified solvents. The method is applicable to poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT), poly-(cyclohexylenedimethylene terephthalate) (PCT), and poly(ethylene naphthalate) (PEN), as well as to copolyesters and other polyesters, defined in ISO7792‑1 , that are soluble in one of the specified solvents under the specified conditions. The viscosity number is determined by the general procedure specified in ISO1628‑1 , observing the particular conditions specified in this part of ISO1628 . The determination of the viscosity number of a thermoplastic polyester provides a measure of the relative molecular mass of the polymer.

Committee
PRI/21
DevelopmentNote
Renumbers & supersedes BS ISO 1628-5. 2015 version incorporates corrigendum to BS ISO 1628-5. Also numbered as BS 2782-7.732E(1998). Supersedes BS 2782-7.732E(1991) and 95/125425 DC. (03/2015)
DocumentType
Standard
Pages
14
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
ISO 1628-5:1998 Identical
EN ISO 1628-5:2015 Identical

ISO 3451-2:1998 Plastics Determination of ash Part 2: Poly(alkylene terephthalate) materials
ISO 1628-1:2009 Plastics Determination of the viscosity of polymers in dilute solution using capillary viscometers Part 1: General principles
ISO 7792-1:2012 Plastics Thermoplastic polyester (TP) moulding and extrusion materials Part 1: Designation system and basis for specifications
ISO 3105:1994 Glass capillary kinematic viscometers — Specifications and operating instructions

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PDF - English
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