BS-ISO-15064-2004.pdf
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1、BRITISH STANDARD BS ISO 15064:2004 Plastics Aromatic isocyanates for use in the production of polyurethanes Determination of the isomer ratio in toluenediisocyanate ICS 83.080.10 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:15:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO 15064
2、:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2006 BSI 2006 ISBN 0 580 49531 0 National foreword This British Standard was published by BSI. It is the UK implementation of ISO 15064:2004. The UK participation in its prepar
3、ation was entrusted to Technical Committee PRI/82, Thermoplastic materials. A list of organizations represented on PRI/82 can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct applic
4、ation. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:15:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 15064:2004(E) INTERNATION
5、AL STANDARD ISO 15064 First edition 2004-08-15 Plastics Aromatic isocyanates for use in the production of polyurethanes Determination of the isomer ratio in toluenediisocyanate Plastiques Isocyanates aromatiques pour utilisation dans la production de polyurthannes Dtermination du rapport des isomres
6、 dans le diisocyanate de tolune BS ISO 15064:2004 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:15:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:15:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Contents Page Forewordiv Intr
7、oduction v 1 Scope1 2 Normative references .1 3 Terms and definitions.1 4 Sampling2 5 Principle.2 6 Reagents2 7 Apparatus.3 8 Test conditions3 9 Method A Samples containing 5 % to 95 % of 2,6-TDI3 10 Method B Samples containing 0 % to 5 % of 2,6-TDI6 Annex A (normative) Calibration curves8 BS ISO 15
8、064:2004 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:15:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Sta
9、ndards 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
10、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
11、 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 possibi
12、lity 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 15064 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting materials. BS ISO 15064:2004 Lice
13、nsed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:15:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI v Introduction No International Standard for the determination of isomer contents of toluenediisocyanate (TDI) has been published. This International Standard is based on infrared spectroscopy and
14、consists of two test methods that can be used to determine the 2,4- and 2,6-isomer contents of commercially important toluenediisocyanates over a broad range of isomer concentrations. It is important to know the isomer content of TDI since the isomers have different reaction rates, and the processin
15、g and properties of polyurethane systems, especially flexible polyurethane foams, may be significantly affected. This method is based on work done in the Bayer Central Analytical Department (Leverkusen) in the early 1960s, and was originally published as part of ASTM D 1638. It is now designated AST
16、M D 4660, Standard Test Methods for Polyurethane Raw Materials: Determination of the Isomer Content of Toluenediisocyanate. BS ISO 15064:2004 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 27 08:15:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank Licensed Copy: sheffieldun sheffieldun, na, M
17、on Nov 27 08:15:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 1 Plastics Aromatic isocyanates for use in the production of polyurethanes Determination of the isomer ratio in toluenediisocyanate WARNING Persons using this International Standard should be familiar with normal laboratory practice. This
18、 standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions prior to use. 1 Scope This In
19、ternational Standard specifies methods for the measurement of toluene-2,6-diisocyanate in mixtures of the 2,4- and 2,6-isomers. Two methods based on infrared spectroscopy are required to give accurate results over a broad range of isomer concentrations. Method A is applicable to TDI samples containi
20、ng 5 % to 95 % of the 2,6-isomer. Method B is applicable to TDI samples containing 0 % to 5 % of the 2,6-isomer. Both methods are based on the quantitative measurement of absorption bands arising from out-of-plane CH deformation vibrations of the aromatic ring at 810 cm1 and 782 cm1 (12,3 m and 13,8
21、 m). 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 648, Laboratory g
22、lassware One-mark pipettes ISO 4787, Laboratory glassware Volumetric glassware Methods for use and testing of capacity ISO 6353-2, Reagents for chemical analysis Part 2: Specifications First series 3 Terms and definitions For the purposes of this document, the following terms and definitions apply.
23、3.1 isomer a compound having the same percentage composition and molecular mass as another compound, but differing in chemical structure and properties 3.2 isomer content the amount of an isomer expressed as a mass percentage of the total isomer amount BS ISO 15064:2004 Licensed Copy: sheffieldun sh
24、effieldun, na, Mon Nov 27 08:15:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 2 3.3 TDI toluenediisocyanate 3.4 polyurethane a polymer prepared by the reaction of an organic di- or polyisocyanate with compounds containing two or more hydroxyl groups 4 Sampling Since organic isocyanates react with at
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