Application of N,N,N’,N’-Tetramethyl-p-phenylenediamine dihydrochloride_Industrial additives

Background and overview^[1][2]

N,N,N’,N’-tetramethyl-p-phenylenediamine dihydrochloride, also called tetramethyl-p-phenylenediamine hydrochloride, or TMPD for short, is an oxidase reagent that can be used to identify gonococci. . The principle is that Neisseria gonorrhoeae has an oxidase, and the oxygen ions it produces can oxidize the oxidase reagent (N,N,N’,N’-tetramethyl-p-phenylenediamine dihydrochloride) into quinone compounds, and the color appears. reaction.

Apply^[1-2]

CN201910589193.1 discloses an enamel coating for pot bodies. The enamel coating is composed of the following parts by weight of raw materials: 100 to 150 parts of enamel frit, 4 to 10 parts of titanium dioxide, 0.8 to 1.2 parts Benzidine yellow, 1.5 to 3.5 parts of cage polysilsesquioxane, 1 to 3 parts of inorganic acid, 0.3 to 0.8 parts of potassium titanate, 10 to 30 parts of N,N,N’,N’-tetramethylpair Phenylenediamine dihydrochloride, 5 to 15 parts of ionic liquid and 30 to 50 parts of deionized water. The enamel coating on the pot body of the present invention has good high temperature resistance and corrosion resistance, can effectively slow down the shedding of the enamel coating on the pot body under the action of high temperature and acid and alkali solutions, and at the same time improves the enamel coating The sintering conditions and sintering quality make it have more excellent decorative effect and comprehensive physical properties. The invention also discloses a method for preparing the enamel coating for the pot body.

CN201610888376. N’,N’-tetramethyl-p-phenylenediamine dihydrochloride (TMPD) and 1-methylimidazole are used as synergistic amination reagents. Since TMPD has dual binding sites, its introduction into the membrane is conducive to the formation of a local cross-linked structure. It can effectively strengthen the mechanical properties and dimensional stability of the membrane without sacrificing the ion exchange capacity and ion conductivity of the membrane. The presence of 1-methylimidazole ensures that the active groups on the polymer segments are completely reacted to avoid excessive cross-linking. The synergistic effect of the two amination agents significantly improves the overall performance of the membrane. Its water absorption rate is 22.65~38.94wt.%, its mechanical strength is 24.81~44.18MPa, and its ion exchange capacity is 2.279~2.564mmol.g^-1 , the hydroxide ion conductivity at room temperature is 0.015~0.028Scm^-1.

Main reference materials

[1] CN201910589193.1 Enamel coating for pot body and preparation method thereof

[2] CN201610888376.X Preparation and application of 1-methylimidazole/TMPD synergistic amination film based on polyetheretherketone