EN ISO 7792-1:2012

SLOVENSKI STANDARD
01-maj-2014
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SIST EN ISO 7792-1:2004
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Plastics - Thermoplastic polyester (TP) moulding and extrusion materials - Part 1:
Designation system and basis for specifications (ISO 7792-1:2012)
Kunststoffe - Thermoplastische Polyester (TP)-Formmassen - Teil 1:
Bezeichnungssystem und Basis für Spezifikationen (ISO 7792-1:2012)
Plastiques - Polyesters thermoplastiques (TP) pour moulage et extrusion - Partie 1:
Système de désignation et base de spécification (ISO 7792-1:2012)
Ta slovenski standard je istoveten z: EN ISO 7792-1:2012
ICS:
83.080.20 Plastomeri Thermoplastic materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 7792-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2012
ICS 83.080.20 Supersedes EN ISO 7792-1:2004
English Version
Plastics - Thermoplastic polyester (TP) moulding and extrusion
materials - Part 1: Designation system and basis for
specifications (ISO 7792-1:2012)
Plastiques - Polyesters thermoplastiques (TP) pour Kunststoffe - Thermoplastische Polyester (TP)-
moulage et extrusion - Partie 1: Système de désignation et Formmassen - Teil 1: Bezeichnungssystem und Basis für
base de spécification (ISO 7792-1:2012) Spezifikationen (ISO 7792-1:2012)
This European Standard was approved by CEN on 24 November 2012.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 7792-1:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 7792-1:2012) has been prepared by Technical Committee ISO/TC 61 "Plastics" in
collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by June 2013, and conflicting national standards shall be withdrawn at
the latest by June 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 7792-1:2004.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 7792-1:2012 has been approved by CEN as a EN ISO 7792-1:2012 without any modification.

INTERNATIONAL ISO
STANDARD 7792-1
Fourth edition
2012-12-01
Plastics — Thermoplastic polyester
(TP) moulding and extrusion
materials —
Part 1:
Designation system and basis for
specifications
Plastiques — Polyesters thermoplastiques (TP) pour moulage et
extrusion —
Partie 1: Système de désignation et base de spécification
Reference number
ISO 7792-1:2012(E)
©
ISO 2012
ISO 7792-1:2012(E)
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the
address below or ISO’s member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
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Published in Switzerland
ii © ISO 2012 – All rights reserved

ISO 7792-1:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Designation system . 2
3.1 General . 2
3.2 Data block 1 . 2
3.3 Data block 2 . 3
3.4 Data block 3 . 4
3.5 Data block 4 . 7
3.6 Data block 5 . 7
4 Examples of designations . 8
4.1 Designation only . 8
4.2 Designation transformed into a specification .11
Annex A (normative) Designation of thermoplastic polyesters .12
ISO 7792-1:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 7792-1 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9,
Thermoplastic materials.
This fourth edition cancels and replaces the third edition (ISO 7792-1:1997), which has been
technically revised.
ISO 7792 consists of the following parts, under the general title Plastics — Thermoplastic polyester (TP)
moulding and extrusion materials:
— Part 1: Designation system and basis for specifications
— Part 2: Preparation of test specimens and determination of properties
iv © ISO 2012 – All rights reserved

INTERNATIONAL STANDARD ISO 7792-1:2012(E)
Plastics — Thermoplastic polyester (TP) moulding and
extrusion materials —
Part 1:
Designation system and basis for specifications
1 Scope
This part of ISO 7792 establishes a system of designation for thermoplastic polyester (TP) material, which may
be used as the basis for specifications. It covers polyester homopolymers for moulding and extrusion based
on poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT), poly(cyclohexylenedimethylene
terephthalate) (PCT), poly(ethylene naphthalate) (PEN), poly(butylene naphthalates) (PBN) and other TP-
types and copolyesters of various compositions for moulding and extrusion.
The types of thermoplastic polyester are differentiated from each other by a classification system based
on appropriate levels of the designatory properties (viscosity number and tensile modulus of elasticity)
and on information about the intended application and/or method of processing, important properties,
additives, colorants, fillers and reinforcing materials.
This part of ISO 7792 is applicable to thermoplastic polyester homopolymers and copolymers. It applies
to materials ready for normal use in the form of powder, granules or pellets, unmodified or modified by
colorants, additives, fillers, etc.
This part of ISO 7792 does not apply to the saturated polyester/ester and polyether/ester thermoplastic
elastomers covered by ISO 14910.
It is not intended to imply that materials having the same designation give necessarily the same
performance. This part of ISO 7792 does not provide engineering data, performance data or data on
processing conditions which may be required to specify a material for a particular application and/or
method of processing. If such additional properties are required, they shall be determined in accordance
with the test methods specified in part 2 of this International Standard, if suitable.
In order to specify a thermoplastic polyester material for a particular application or to ensure
reproducible processing, additional requirements may be given in data block 5.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 1043-1, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special
characteristics
ISO 1043-2, Plastics — Symbols and abbreviated terms — Part 2: Fillers and reinforcing materials
ISO 1628-5, Plastics — Determination of viscosity of polymers in diluted solutions using capillary viscometers
— Part 5: Thermoplastic polyester (TP) homopolymers and copolymers
1)
ISO 1874-1 , Plastics — Polyamide (PA) moulding and extrusion materials — Part 1: Designation system
and basis for specification
1) Under revision as ISO 16396-1.
ISO 7792-1:2012(E)
ISO 7792-2, Plastics — Thermoplastic polyester (TP) moulding and extrusion materials — Part 2:
Preparation of test specimens and determination of properties
ASTM D5927-09, Standard Classification System for Thermoplastic Polyester (TPES) Injection and Extrusion
Materials Based on ISO Test Methods
3 Designation system
3.1 General
The designation system for thermoplastics is based on the following standardized pattern:
Designation
Identity block
Individual-item block
Description block
(optional) International Data Data Data Data Data
Standard number block block block block block
block 1 2 3 4 5
The designation consists of an optional description block, reading “Thermoplastics”, and an identity block
comprising the International Standard number and an individual-item block. For unambiguous designation,
the individual-item block is subdivided into 5 data blocks comprising the following information:
— Data block 1: Identification of the plastic by its symbol PET, PBT, PCT, PEN or PBN, or
TP for all such polyesters and copolyesters in general, in accordance with
ISO 1043-1 (see 3.2).
— Data block 2: Position 1: Intended application or method of processing (see 3.3).
Positions 2 to 8: Important properties, additives and supplementary infor-
mation (see 3.3).
— Data block 3: Designatory properties (see 3.4).
— Data block 4: Fillers or reinforcing materials and their nominal content (see 3.5).
— Data block 5: Information required for specification purposes. The use of data block 5
converts the designation to a specification. Only information listed in data
block 5 becomes part of the specification requirements (see 3.6).
The first character of the individual Item Block shall be a hyphen.
The five data blocks shall be separated from each other by a comma.
If a data block is not used, this shall be indicated by doubling the separation sign, i.e. by two commas (,,).
Terminal commas may be omitted.
3.2 Data block 1
In this data block, after the hyphen, thermoplastic polyesters are identified using the symbols and
designations listed in Tables 1 and 2.
2 © ISO 2012 – All rights reserved

ISO 7792-1:2012(E)
Table 1 — Symbols indicating the chemical structure of polyester materials in data block 1
Symbol Name and chemical identification
PET Poly(ethylene terephthalate): polyester based on ethylene glycol and terephthalic acid
(TP 2T) (or its ester).
PTT Poly(trimethylene terephthalate): polyester based on 1,3-propanediol and terephthalic acid
(TP 3T) (or its ester).
PBT Poly(butylene terephthalate): polyester based on 1,4-butanediol and terephthalic acid
(TP 4T) (or its ester).
PCT Poly(cyclohexylenedimethylene terephthalate): polyester based on cyclohexanedimethanol
(TP CHT) and terephthalic acid (or its ester).
PEN Poly(ethylene naphthalate): polyester based on ethylene glycol
(TP 2N) and 2,6-naphthalenedicarboxylic acid (or its ester).
PBN Poly(butylene naphthalate): polyester based on 1,4-butanediol
(TP 4N) and 2,6-naphthalenedicarboxylic acid (or its ester).
TP 26 Poly(ethylene adipate): polyester based on ethylene glycol and adipic acid.
T
...