Deutsches Institut für Kautschuktechnologie e.V.

Eupener Str. 33, 30519 Hannover
Telephone +49 511 8420110
Fax +49 511 8386826


Hall map

K 2016 hall map (Hall 6): stand C54-06

Fairground map

K 2016 fairground map: Hall 6

Our range of products

Product categories

  • 03  Machinery and equipment for the plastics and rubber industries
  • 03.09  Measuring and test equipment
  • 03.09.001  Measuring and test equipment for rheological properties

Measuring and test equipment for rheological properties

  • 04  Services for the plastics and rubber industrie
  • 04.03  Trade associations
  • 04  Services for the plastics and rubber industrie
  • 04.06  Science and consulting

Our products

Product category: Measuring and test equipment for rheological properties, Trade associations, Science and consulting

Testing site Polymer Materials / Nitrosamines

The testing site „Polymer Materials/Nitrosamines“ of the elastomer chemistry department
is concerned with organic trace analysis in rubber articles and articles of daily use on the basis of polymer materials. One focus is leachalbes/extractables analysis. Many polymer materials emit small amounts of additives needed for achieving certain physical and chemical properties when they are in contact with liquid media as for example drinking water or pharmaceuticals. Such additives are for example plasticizers, processing aids and anti-oxidants. Depending on the kind of polymer material and the liquid medium to which it is exposed a migration of the additives into the liquid medium takes places. Typical migrating additives from the group of plasticizers are phthalates while fatty acids are representative leachables of processing aids and substituted phenols of anti-oxidants. By means of High Performance Liquid Chromatography (HPLC) leachables/extractables with middle to high molecular weights can be analysed qualitatively and quantitatively down to the lower ppm range. By coupling of HPLC with a mass spectrometric detector a direct identification of substances is possible. A routine technique for identification of leachables/extractables with lower molecular weights is gaschromatography coupled with mass spectrometry (GC-MS). As containers, tubes, packagings or filters made of polymer materials get an increasing significance in the pharmaceutical and food industry due to their outstanding practical and chemical properties and have to meet particularly high demands concerning purity and compatibility, the area of leachables/extractables analysis is an important instrument for their quality assurance.

A further focus of the testing site PW/NA is the analysis of material samples such as articles of daily use, vulcanisates, compounds or building materials and air samples for their contamination with nitrosamines. Nitrosamines are formed in the production of rubber articles mainly during vulcanization by reaction of secondary amines which are released from vulcanization accelerators with nitrosating agents. These nitrosating agents can be contained in the rubber compound itself or they can be incorporated from the atmosphere. A portion of the formed nitrosamines can be emitted to the working environment during vulcanization or during the storage of the manufactured articles and thus lead to a contamination of the ambient air and potentially also of the building stock. The nitrosation of emitted amines from vulcanisates with ubiquitary nitrogen oxides contribute to the contamination of air with nitrosamines, too. Ca. 90% of all nitrosamines are classified as carcinogenic according to the Ordinance on Hazardous Substances and TRGS 552 so that the monitoring, prevention and reduction of the exposition of employees and consumers is necessary and compulsory according to applicable directives.

At the testing site „Polymer Materials/Nitrosamines“ (PW/NA) accredited analyses of polymer materials for leachable and extractable substances and of material and air samples for contamination with nitrosamines are performed.

We offer the following accredited tests:

Testing of polymer materials from the pharmaceutical and food sector:

Extraction/Migration in different kinds of media
Sample preparation by liquid-liquid extraction and solid phase extraction
HPLC-UV screening analysis of extracts
Qualitative GC-MS analysis for identification of extract components
Peak identification and semi-quantification by HPLC-UV analysis
Semi-quantification with internal standards by GC-MS analysis
Determination of the non-volatile residue
FT-IR analysis of extract residues
Hazardous substance testing of elastomers and material samples:

Extraction with methanol followed by GC-TEA analysis of the extracts for high and low-volatile N-nitrosamines
Determination of N-nitrosamines and nitrosatable compounds after migration in saliva test solution according to DIN EN 12868
Testing of air samples:

GC-TEA analysis of Thermosorb tubes for high-volatile N-nitrosamines according to BGI 505-23, edition of 09/1992, procedure no. 4

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About us

Company details

As per its charter, the Deutsche Institut für Kautschuktechnologie e. V. (DIK) was founded in 1981 on the initiative of the German rubber industry and the Lower Saxony Ministry for Economics, Labor and Transport. Since commencement of its active engagement in the areas of processing technology and elastomer chemistry and physics in 1984, DIK has evolved into a respected research institution that now enjoys international renown.

Several factors paved the way to this success and to the development of the Institute into a competence center for rubber technology. For one thing, there is the unflagging service readiness of its staff and management. Then there is the support provided by the member companies, the Deutsche Kautschuk-Gesellschaft (DKG) [German Rubber Society], the Wirtschaftsverband der deutschen Kautschukindustrie (WDK) [organization of the German manufacturers of tires and technical elastomers], the Lower Saxony Ministry for Economics, Labor and Transport and the Arbeitgeberverband der Deutschen Kautschukindustrie (ADK) [employers' federation of the German rubber industry].

This institute's success is, however, also the product of its unique underlying concept, which unites under one roof the various natural science and engineering disciplines having a bearing on rubber and polymer materials. This focus has enabled DIK to establish itself internationally as an institute of cross-sectional character unparalleled in its own way. We believe the combination of research and entrepreneurial focus to admirably position DIK as a know-how partner and service provider to the European rubber industry and its suppliers. In particular, the users of elastomer products themselves — the machinery construction or auto industries together with their suppliers — stand to profit from DIK's competence.

Special priority is assigned the training and ongoing development of qualified employees for the rubber industry - whether at the entry level or in a specialist capacity. In cooperation with the Wirtschaftsverband der deutschen Kautschukindustrie (WDK) and Leibniz Universität Hannover, a continuing education and training course of studies in rubber technology ["Weiterbildungsstudium Kautschuktechnologie (WBS)"] has successfully been implemented since 1985. Here, rubber industry professionals can enroll in a decidedly job-related program of a high academic caliber. This unique offering gives those participating the wherewithal to become national and international rubber experts.

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