3 results about "Amidogen" patented technology

The invention discloses polymer functional graphene and a preparation method and application thereof. Graphene is connected with a polymer through the combination of at least one of imide, amide, ester groups and amidogen, wherein the polymer is a polymer at least containing one benzene ring and with the molecular weight of 200-500,000 and interacts with the graphene through covalent bonds, hydrogen bonds and/or pi-pi conjugation. The polymer functional graphene is excellent in dispersion property in non-polar solvents and excellent in dispersion stability, and cannot precipitate after long-time storage for multiple months; according to the adopted preparation method, the polymer with amidogen, hydroxyl and carboxyl reacts with epoxy, hydroxyl and the like on the graphene and then is subjected to covalent grafting on the surface of the graphene, and the grafting rate of the polymer reaches 30% or above. In addition, the obtained polymer functional graphene can be widely applied to lubricating oil, plastic, rubber, paints, adhesives, fibers and other fields, and has potential application value.

The invention belongs to the field of water environment treatment, and particularly relates to a preparation method and application of a hydroxyethyl cellulose modified scale inhibitor capable of effectively inhibiting silicon dioxide scale bodies in a green and efficient manner. The green modified cellulose scale inhibitor is prepared by taking hydroxyethyl cellulose as a raw material, ammonium persulfate as an initiator and N-(3-dimethylaminopropyl) methacrylamide as a grafting monomer through a grafting reaction. According to the method, a grafting chain containing an amide group and a tertiary amine group can be introduced to a cellulose molecular chain, so that scale forming substances can be effectively dispersed, and the efficient environment-friendly scale inhibitor is obtained. The scale inhibitor prepared by the invention can effectively inhibit the generation of scale bodies and prevent the size of the scale bodies from being increased; when the scale inhibitor is applied to a reverse osmosis system, the reduction of membrane flux is effectively relieved, and the membrane has a good application prospect in controlling silicon dioxide scaling on the surface of the reverse osmosis membrane.

The invention discloses a preparation process of N-(2-acetamido)-2-iminodiacetic acid. The preparation process comprises the following steps: subjecting a reactant 1 with a structure as shown in a formula as described in the specification to reacting with a nitrogen-containing compound, and subjecting the obtained intermediate product to reacting with an amination reagent to obtain N-(2-acetamido)-2-iminodiacetic acid. In the formula, Y, Y1, Y2 and Y3 are respectively one selected from the group consisting of OH, OM, halogen, OR and SR; and Z is one selected from the group consisting of halogen, OH and SH. According to the invention, low-price starting raw materials are used, so cost can be greatly reduced; reaction conditions are mild, a subsequent purification process is simple, and theyield of N-(2-acetamido)-2-iminodiacetic acid is high; and the whole process disclosed by the invention is relatively simple to operate and easy to control, is beneficial for scale-up production, shortens the reaction production period, and is also beneficial to academic research and the like of N-(2-acetamido)-2-iminodiacetic acid.