Decolorization method of ketoxime type silane crosslinking agent
A technology of silane cross-linking agent and ketoxime-based silane, which is applied in the field of decolorization of ketoxime-type silane cross-linking agent, can solve the problems of large amount of attapulgite clay addition, increased ketoxime content, and large material loss, so as to improve the use value , prevent chroma from deepening, and reduce the effect of solid waste discharge
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Embodiment 1-1
[0048] Embodiment 1-1, a method for decolorizing a ketoxime type silane crosslinking agent, the following steps are carried out in sequence:
[0049] 1) Modification of attapulgite clay:
[0050] ①. Take 100 grams of 200-mesh decolorized attapulgite clay, add 200 milliliters of methyl tributylketoxime silane (platinum cobalt color number ≤ 100) for immersion treatment for 60 minutes, and obtain a decolorized attapulgite clay / ketoxime silane mixture;
[0051] ②. Add 100ml of water to the mixture of decolorized attapulgite clay / ketoximosilane for dispersion, stir at room temperature for 30 minutes, then filter, wash the filter cake I (use 500ml of water for washing), and then dry it at 100°C for 60 to 120 minutes , and then roasted at 330°C for 2 hours to obtain the modified decolorized attapulgite clay, which was left to cool naturally in a desiccator for later use.
[0052] 2), decolorization:
[0053] The modified decolorized attapulgite clay is passed through a 200-mesh si...
Embodiment 1-2
[0054] Embodiment 1-2, a kind of decolorization method of ketoxime type silane crosslinking agent:
[0055] 1), replace the decolorized attapulgite clay / ketoximosilane mixture in Example 1-1 step 1) ① with the filter cake II obtained by filtering in Example 1-1 step 2); the rest of the content is the same as in Example 1-1 Step 1)②, so as to achieve the first repeated use of the modified decolorized attapulgite clay (that is, the total number of uses of the modified decolorized attapulgite clay is 2 times).
[0056] 2), the modified decolorized attapulgite clay obtained in the above steps is decolorized according to step 2) of Example 1 to obtain low chroma ketoximosilane.
Embodiment 1-3
[0057] Embodiment 1-3, a kind of decolorization method of ketoxime type silane crosslinking agent:
[0058] 1), replace the decolorized attapulgite clay / ketoximosilane mixture in Example 1-1 step 1) ① with the filter cake II obtained by filtering in Example 1-2 step 2); the rest of the content is the same as in Example 1-1 Step 1)②, thereby realizing the second repeated use of the modified decolorized attapulgite clay (that is, the total number of uses of the modified decolorized attapulgite clay is 3 times).
[0059] 2), the modified decolorized attapulgite clay obtained in the above steps is decolorized according to step 2) of Example 1 to obtain low chroma ketoximosilane.
[0060] The color number and gas chromatographic analysis components of methyl tributylketoxime silane after the treatment of the above-mentioned Examples 1-1 to 1-3 are as described in Table 1.
[0061] Table 1
[0062]
[0063] instruction manual:
[0064] For the methyl tributylketoxime silane us...
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