Deolink silane preparations have carrier systems that are specifically developed for each silane grade; these consist of either polymer/wax systems or pure polymer systems. Deolink silane preparations are easy to handle, enabling them to be used in open mill mixing as well in in continuous mixing processes. The polymer carrier system protects the silane from ambient moisture. The carrier systems are inert and don’t show any agglomerates.
Deolink silane preparations that contain 50% silane on polymer/ wax systems offer the following advantages over liquid or inorganic carriers:
|Grade||Active substance [%]||Dropping point [°C]||Total sulphur [%]||BfR||FDA||Dosage [phf]*||Literature|
|Deolink TESPT||50||72 ± 5||11.5 ± 1.5||-||-||2 – 16||DOG-Kontakt 39|
|Deolink MX||50||107 ± 7||4.3 ± 0.5||-||-||1 – 8||DOG-Kontakt 39,
DOG Laboratory Exposé 10
|Deolink Vinyl||50||72 ± 5||-||+||-||1 – 6||DOG-Kontakt 39,
DOG Laboratory Exposé 8, 9
|Deolink VH||50||107 ± 7||-||-||-||1 – 6||DOG-Kontakt 39,
DOG Laboratory Exposé 8, 9
|Deolink VO||50||75 ± 5||-||+||-||1 – 6||DOG Lab. Report 4532|
|Deolink Amino TE||50||105 ± 7||-||+||-||1 – 10||DOG Lab. Report 4533|
|*Dosage [phf]: parts per hundred filler|
Deolink TESPT Bis[(triethoxysilylpropyl)tetrasulfane] is used to improve the physical properties of sulphur-cured compounds, as well as to establish the chemical link between rubber and silica, or other active white fillers. Mechanical properties, e.g. modulus, compression set, tensile strength, and abrasion resistance can be significantly improved by using Deolink TESPT.
Deolink MX is a 50% preparation of Thiocarboxylsilane on a polymer carrier system. The bifunctional sulphur silane is compatible with all elastomers that are suitable for sulphur vulcanization. Deolink MX can be used over a broad temperature range and is – at low dumping temperatures – often more active than conventional TESPT. Deolink MX contains a hindered mercapto group and can be used as an alternative to conventional mercaptosilanes. The protective group is removed during processing, thus releasing the mercaptosilane. Using Deolink MX improves the processing by creating higher scorch safety and preventing the typical mercapto odour. The improved processing leads to higher injection volumes and safer processing.
Deolink Vinyl [Tris(2-methoxyethoxy)vinylsilan] is a silane preparation used for peroxide crosslining, also containing over 50% active agents. By chemically linking the filler to the elastomer, better physical values (such as the compression set) can be achieved.
The application of Deolink VH improves the wet electrical characteristics, which is especially important for the cable industry. Compared to conventional vinyl silanes, Deolink VH improves the long-term properties in terms of the electrical values. Deolink VH does not release any toxic methoxyethanol.
While using Deolink VO, the improvement in the physical properties is more pronounced than with Deolink VH. Neither Deolink VO nor Deolink VH develop toxic methoxyethanol during processing.
Deolink Amino TE is a preparation with 50% 3-Aminopropyltriethoxysilane on a polymer carrier system. This special product is able to be used in the continuous mixing processes of thermoplastics, among other applications. With flame-resistant mixtures with a high amount of filler (e.g. ATH), Deolink Amino TE improves the physical values and optimises the processing. Further applications include acrylate mixtures with light filler, where the compression set and physical values are also improved. Among the products listed here, Deolink Amino TE is a particularly reactive silane.
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