CEN/TC 298/WG 1 - Colouring materials in plastics

This Part of EN 14469 specifies a procedure for producing basic mixtures for the testing of colouring materials )  in plasticized polyvinyl chloride (PVC-P) materials, together with the composition of these basic mixtures.
It distinguishes between:
   - basic mixture A (transparent basic mixture)
   - basic mixture B (white basic mixture)

This Part of EN 14469  specifies a procedure for preparing test samples for the testing of colouring materials )  in plasticized polyvinyl chloride (PVC-P) materials. It describes the manner in which basic mixtures as defined in EN 14469 -1 and pigments and pigment preparations are to be used to prepare test samples for the testing of particular pigment properties. The standard is applicable to inorganic and organic pigments, and also to pigment preparations in powder, paste or granular form (see Annex A (informative)).

This Part of EN 14469  specifies a procedure for determining the relative tinting strength of white pigments in plasticized polyvinyl chloride (PVC-P) at identical concentration of the white pigments by weight. To this end, the white pigments are incorporated into the basic mixture A (see EN 14469 -1) together with a carbon black pigment preparation.

This Part of EN 14469 specifies a method of establishing and evaluating quantitatively the bleeding of pigments from sheets of coloured PVC-P into material of the same kind brought into contact with them. It also sets out the way in which specimens prepared in accordance with prEN 14469-2 shall be tested. It may also be used for determine bleeding from other polymers into white PVC-P.
This Part of EN 14469 does not deal with pigment blooming (see also Annex A, informative).

This part of EN 12877 gives a general introduction to the most widely used methods for determination of colour stability during processing of colouring materials in plastics under the influence of heat. It also specifies those details which are common to the various test methods described in subsequent Parts of EN 12877. The choice of the test method depends on the plastics material to be coloured, the method of processing and the end-use requirements.

This part of EN 12877 describes a method for determining the colour stability of colouring materials under defined conditions in plastics by injection moulding. The result of the determination is a relative value, not an absolute one. The method is applicable for testing colouring materials in thermoplastics that are processible by injection moulding.

This part of EN 12877 describes a method for determining the colour stability of colouring materials in plastics under defined conditions by an oven test. The result of the determination is a relative value, not an absolute one. The method is mainly used for testing colouring materials in polyvinyl chloride, and in thermosetting materials.

This Part of EN 12877 describes a method for determining the colour stability of colouring materials under defined conditions in plastics by two-roll milling. The result of the determination is a relative value, not an absolute one. The method is mainly used for testing colouring materials in polyvinyl chloride.

This part of EN 13900 specifies a method assessing the degree of dispersion of colorants ) and/or extenders in a thermoplastic polymer.
The method is suitable for testing colorants and/or extenders in the form of concentrates or compounds in all polymers used for extrusion processes.
NOTE   Defects, like gels, black specks, holes in the test film etc. are not in the scope of this standard.
The film test result determined according to this method is valid only for the equipment, conditions and test polymer being used. The use of test conditions differing from those specified might give different results. The preparation methods of concentrates or compounds are not specified in this standard. The results obtained for individual colorants and/or extenders are therefore comparable only when the same conditions of preparation for concentrates or compounds and a comparable detection system are used.

This part of EN 13900 specifies a method of assessing the degree of dispersion of a colorant in a thermoplastic polymer.
The method is suitable for testing colorants in the form of colour concentrates in all polymer used for extrusion and melt-spinning processes.
The filter pressure value (FPV) determined according to this method is valid only for the equipment, conditions and test polymer being used. The use of test conditions differing from those specified may give different results. The method of preparing the colour concentrate is not specified in this standard. The results obtained for individual colorants are therefore comparable only when the same method of preparation for colour concentrates is used.
Annex A is normative and gives a model for the breaker plate.
Annex B is informative and provides a model test report containing a result of the round robin tests carried out in preparing this standard.

This Part of EN 13900 specifies a method of determining the colouristic properties of a test pigment in polyethylene (PE) relative to a standard, and the dispersibility DHPE of pigments from the differences in tinting strength on dispersing colouring materials under various conditions.
The method is appropriate for use with white pigments.
The ease of dispersion determined in this way is valid only for the dispersion equipment, dispersion conditions and dispersion medium being used. The use of test conditions differing from those specified can give different results; this applies both to the absolute magnitude and to the relation between values of the ease of dispersion of various pigments. The subscript DHPE is therefore used to designate the value obtained as specified in this Part of EN 13900.

This part of EN ..... provides an introduction to the various parts of EN ..... which describe methods for dispersing pigments and extenders in plastics materials in order to determine their dispension characteristics. Methods of assessing dispersion characteristics are described in the subsequent parts of EN ..... The various procedures described permit comparisons to be made between similar pigments (for example between a test sample and an agreed reference pigment).

This part of EN ..... specifies a method of determining the ease of dispersion DH/PVC-P of pigments from the differences in colour strength on dispersing colouring materials under various conditions in plasticized polyvinyl chloride (PVC-P) compounds. The method is appropriate for use with organic and inorganic colour pigments and for pigment preparations.

This part of EN ..... specifies a method of determining in polyethylene (PE) the colouristic properties of a test pigment relative to a standard, and the ease of dispersion DH/PE of pigments from the differences in colour strength on dispersing colouring materials under various conditions. The method is appropriate for use with organic and inorganic black and colour pigments.