1、October 2009DEUTSCHE NORM English price group 8No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 59.140.30!$ZB:“1553123w
2、ww.din.deDDIN EN ISO 11643Leather Tests for colour fastness Colour fastness of small samples to solvents (ISO 11643:2009)English version of DIN EN ISO 11643:2009-10Leder Farbechtheitsprfungen Farbechtheit kleiner Proben gegenber Lsemitteln (ISO 11643:2009)Englische Fassung DIN EN ISO 11643:2009-10Su
3、persedesDIN EN ISO 11643:1998-12www.beuth.deDocument comprises 12 pagesDIN EN ISO 11643:2009-10 2 National foreword This standard has been prepared by Technical Committee ISO/TC IULTCS “International Union of Leather Technologists and Chemists Societies” in collaboration with Technical Committee CEN
4、/TC 289 “Leather” (Secretariat: UNI, Italy). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Technical Committee NA 062-05-51 AA Anforderungen und Physi-kalische Prfverfahren fr Leder und seine Ausgangsprodukte.
5、The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 105-A02 DIN EN 20105-A02 ISO 105-A03 DIN EN 20105-A03 ISO 105-A04 DIN EN ISO 105-A04 ISO 105-A05 DIN EN ISO 105-A05 Amendments This standard differs from DIN EN ISO 11643:1998-12 as follow
6、s: a) Water-based solvents have been added. b) The title of the standard has been changed. c) Petroleum hydrocarbon solvents may now also be used. Previous editions DIN EN ISO 11643: 1998-12 National Annex NA (informative) Bibliography DIN EN 20105-A02, Tests for colour fastness of textiles Part A02
7、: Grey scale for assessing change in colour DIN EN 20105-A03, Textiles Tests for colour fastness Part A03: Grey scale for assessing staining DIN EN ISO 105-A04, Textiles Tests for colour fastness Part A04: Method for the instrumental assessment of the degree of staining of adjacent fabrics DIN EN IS
8、O 105-A05, Textiles Tests for colour fastness Part A05: Instrumental assessment of change in colour for determination of grey scale rating EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11643 May 2009 ICS 59.140.30 Supersedes EN ISO 11643:1998English Version Leather - Tests for colour fast
9、ness - Colour fastness of small samples to solvents (ISO 11643:2009) Cuir - Essais de solidit des teintures - Solidit des teintures de petits chantillons aux solvants (ISO 11643:2009) Leder - Farbechtheitsprfungen - Farbechtheit kleiner Proben gegenber Lsemitteln (ISO 11643:2008) This European Stand
10、ard was approved by CEN on 6 May 2009. 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
11、national standards may be obtained on application to the CEN 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
12、and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxemb
13、ourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All right
14、s of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11643:2009: E2 DIN EN ISO 11643:2009-10 EN ISO 11643:2009 (E) Contents Page Foreword .3 Introduction.4 1 Scope5 2 Normative references5 3 Principle .5 4 Apparatus and materials 6 5 Test specim
15、en6 6 Procedure.7 7 Test report8 Annex A (informative) Preparation of dry-cleaning solution containing a detergent9 Annex B (informative) Commercial sources for apparatus and materials10 3 Foreword This document (EN ISO 11643:2009) has been prepared by Technical Committee CEN/TC 289 “Leather”, the T
16、his 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 November 2009, and conflicting national standards shall be withdrawn at the latest by November 2009. Attention is drawn to the possibility that some
17、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 11643:1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of
18、 the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slov
19、akia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. secretariat of which is held by UNI, in collaboration with Technical Committee ISO/TC IULTCS “International Union of Leather Technologists and Chemists Societies”. EN ISO 11643:2009 (E) DIN EN ISO 11643:2009-10 Introduction The testi
20、ng of leather to determine its colour fastness to solvents can be done in several ways to achieve different aims. Small leather samples can be tested to assess the fastness to solvents of leather dyes and finishes, or of the finished leather itself. The test method specified in this International St
21、andard covers only the testing of small leather samples, in the absence of any other materials (accessories, adhesives, etc.), that can influence the cleanability with solvents of the finished article. Moreover, it does not consider changes in leather properties, such as the handling characteristics
22、 or area stability, as the samples are too small. It must not therefore be used to provide guidance as to the process to be employed for cleaning or spot and stain removal with solvents on complete garments. Part of the colour of leather is due to the oil content. When treated with solvents some of
23、the colour change is due to the loss of oil into the solvent. The objective of the treatment with triolein is to restore the colour due to changes in the oil content of the leather. The method with one level of triolein can give a guideline for re-oiling. Since different leathers can have different
24、oil contents, a range of re-oiling tests would be necessary to establish the correct re-oiling level. 4 DIN EN ISO 11643:2009-10 EN ISO 11643:2009 (E) 1 Scope This International Standard specifies a method for determining the resistance to solvent solutions of the colour and finish of unused, and no
25、t yet cleaned, leather. It does not cover composite materials or complete leather garments. It is not intended to be used to give any guidance on the process to be employed for cleaning garments. During the test, the colour of the leather can change and the adjacent fabric used can become stained. A
26、dditionally, the finish of the leather can be damaged. The presence of absorbed water in the leather, adjacent fabric or solvent has not been found to be a critical factor in assessing the colour fastness. 2 Normative references The following referenced documents are indispensable for the applicatio
27、n 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 105-A02, Textiles Tests for colour fastness Part A02: Grey scale for assessing change in colour ISO 105-A03, Textile
28、s Tests for colour fastness Part A03: Grey scale for assessing staining ISO 105-A04, Textiles Tests for colour fastness Part A04: Method for the instrumental assessment of the degree of staining of adjacent fabrics ISO 105-A05, Textiles Tests for colour fastness Part A05: Instrumental assessment of
29、change in colour for determination of grey scale rating ISO 105-F10:1989, Textiles Tests for colour fastness Part F10: Specification for adjacent fabric: Multifibre 3 Principle A composite specimen of the leather and an adjacent fabric is agitated, together with PTFE rods, in a solvent, which may co
30、ntain triolein (and possibly a detergent), then squeezed and dried at ambient temperature. The change in colour of the specimen and staining of the adjacent fabric are assessed with the grey scales and (if applicable) any changes in the finish are noted. 5 EN ISO 11643:2009 (E) DIN EN ISO 11643:2009
31、-10 4 Apparatus and materials Use normal laboratory apparatus and the following. 4.1 Suitable mechanical device, for mechanically agitating the containers (4.2) by rotation at 40 r/min 5 r/min and able to maintain a temperature of 30 C 2 C. The apparatus chosen shall be fitted with a cooling device,
32、 if necessary. 4.2 Containers, made of glass or stainless steel, of approximately 500 ml capacity, which can be closed, e.g. using solvent-resistant gaskets, and which are suitable for agitating the composite specimen in the selected solvent solution. 4.3 PTFE (polytetrafluoroethylene) rods, 20 piec
33、es, each approximately 7 mm to 9 mm in diameter and 20 mm 2 mm long. 4.4 Plain-weave multifibre fabric, approximately 100 mm wide, for use as the adjacent fabric. The type DW multifibre fabric conforming to ISO 105-F10 is normally used. 4.5 Solvent solution, containing at least one of the following
34、solvents: tetrachloroethylene (also commonly referred to as perchloroethylene or “per”), of commercial dry-cleaning grade. The solvent shall be stored over anhydrous sodium carbonate to neutralize any hydrochloric acid formed; petroleum hydrocarbon, boiling point 182 C to 200 C, of commercial dry-cl
35、eaning grade; or other solvents commonly used for purposes of dry cleaning in the country concerned. If other solvents are used then they shall be clearly defined and shall be indicated in the test report. CAUTION Many solvents are considered to be toxic. Use adequate ventilation and avoid contact w
36、ith the skin. NOTE Perchloroethylene is considered to be slightly more severe in solvent-cleaning action than petroleum solvents. Normally, a colour which is not affected by perchloroethylene will not be affected by petroleum solvents, whereas the converse is not always true. 4.6 Glycerol tri(cis-9-
37、octadecenoate) (also referred to as glycerol trioleate or “triolein”), of technical grade. 5 Test specimen Cut out a leather specimen measuring approximately 40 mm 100 mm. Fix a piece of adjacent fabric (4.4) measuring approximately 40 mm 100 mm on the flesh side of the leather for grain leathers, o
38、r on the side worn inside for other leathers, using a steel staple at one end of the specimen. Alternatively, the adjacent fabric and the leather can be sewn together at one end of the specimen. 6 DIN EN ISO 11643:2009-10 EN ISO 11643:2009 (E) 6 Procedure 6.1 The solvent solution used shall be one o
39、f those prepared as specified in Table 1. Table 1 Solvent solutions Solvent solution Solvent Triolein g/l No. 1 No. 2 No. 3aPerchloroethylene Petroleum hydrocarbon Perchloroethylene 30 aAdd the appropriate amount of triolein to the solvent and stir until a clear solution is obtained. NOTE 1 For cert
40、ain purposes, it can be useful to add different amounts of triolein to the solution. NOTE 2 For some applications, the addition of a detergent might be appropriate (see Annex A). 6.2 If necessary, set the temperature control of the agitating device (4.1) and pre-heat it to approximately 30 C. Place
41、the composite specimen (Clause 5), 100 ml 5 ml of the solvent solution (4.5) and 20 PTFE rods (4.3) in the container (4.2) and place the container in the agitating device. Rotate the container at 40 r/min 5 r/min for 30 min, maintaining the temperature at 30 C 2 C. 6.3 Remove the composite specimen
42、from the container, place it between two sheets of absorbent paper, compress it uniformly with a load of 4,5 kg and maintain the pressure for 1 min. Remove the specimen and place the specimen on a horizontal grille so that the leather and adjacent fabric are not touching. Let the solvent evaporate a
43、t ambient temperature under a suitable hood with good ventilation. CAUTION When removing and drying specimens, use adequate ventilation and avoid contact of the solvent with the skin. When dry, check if fibres and loose material adhere to the adjacent fabric; remove these by careful use of the stick
44、y side of a clear adhesive tape. 6.4 Visually assess the change in colour of the leather in accordance with the ISO 105-A02 grey scale. Visually assess the staining of each type of fibre in the adjacent fabric in accordance with the appropriate grey scale in ISO 105-A03. Alternatively, the change in
45、 colour of the leather according to the grey scale and the staining of each type of fibre in the adjacent fabric may be assessed instrumentally in accordance with ISO 105-A05 and ISO 105-A04, respectively. 6.5 Note any changes in the surface finish of the leather, if applicable. 7 EN ISO 11643:2009
46、(E) DIN EN ISO 11643:2009-10 7 Test report The test report shall include the following information: a) a reference to this International Standard; b) a description of the type of leather tested; c) details of the apparatus used; d) details of the solvent solution used; e) the numerical grey scale ra
47、ting obtained for the change in colour of the leather specimen; f) the numerical grey scale ratings obtained for the staining of the adjacent fabric, giving a separate rating for each of the different types of fibre; g) details of any changes in the surface finish, if applicable; h) details of any d
48、eviations from the procedure. 8 DIN EN ISO 11643:2009-10 EN ISO 11643:2009 (E) Annex A (informative) Preparation of dry-cleaning solution containing a detergent A.1 Detergent Prepare the detergent as follows. Slowly add 21 parts by mass of 3-methoxypropylamine to 79 parts by mass of dodecylbenzenesu
49、lfonic acid, while stirring. Do not allow the temperature to rise above 80 C. On completion of the addition, maintain the temperature between 70 C and 80 C. Dilute 1 g of this mixture with 100 ml of water and measure the pH. If the pH-value is not between 4 and 7, add a small amount of dodecylbenzenesulfonic acid or 3-methoxypropylamine to the mixture and check the pH-value as before. Continue the procedure until the pH-value is in the required range. Allow to cool to room temperature. A.2 D
