Abstract: The present disclosure relates to a modified environment-friendly corn starch adhesive, comprising the following components in parts by weight: 30 parts of corn starch, 300-400 parts of water, 0.2-3 parts of oxidant, and 80-120 parts of polyvinyl alcohol, 1-5 parts of cross-linking agent, 3-5 parts of calcium chloride, 0.1-3 parts of urea, 0.2-0.5 parts of defoamer, and an appropriate amount of sodium hydroxide (to adjust pH), the cross-linking agent is a modified boric acid cross-linking agent prepared by reacting boric acid with epichlorohydrin, water and citric acid at 80-100° C. The surface of the modified boric acid cross-linking agent is bonded with a large number of epoxy groups and carboxyl groups, which can react with the carboxyl and aldehyde groups of the oxidized starch. These reactions can form synergistic effect with boric acid, which together improve the bonding efficiency and improve the adhesive strength of the colloid.

Abstract: Hydrocarbyl tin complexs of alkynyl phosphonic acid with antitumor activity and their application are provided. Tests are conducted to evaluate activity, showing that the provided complexs have much stronger activity than cisplatin. The provided hydrocarbyl tin complexs can be potential candidate as a clinical antitumor drug.

Abstract: A preparation method of an antibacterial deodorizing modified fiber for water purification is provided. Maleic anhydride is used to perform an addition reaction with sodium polysulfide to generate a disulfide antibacterial agent I, the disulfide antibacterial agent I continues to react with 2-amino-5-nitropyridine in an acetic acid solution under the catalysis of sodium acetate to obtain a compound II, then, the nitro in the compound II is reduced into amino by ferrous sulfate, meanwhile, anhydride is hydrolyzed into carboxylic acid in a faintly acid aqueous solution to obtain a compound III, and finally, under alkaline conditions, the amino in the compound III reacts with the cyan in a polyacrylonitrile fiber to obtain a modified polyacrylonitrile fiber. The prepared modified polyacrylonitrile fiber can remove various heavy metals in sewage and has good antibacterial and anti-mildew effects, thereby achieving the effects of water purification and deodorization.

Abstract: The invention belongs to the technical field of binders, and particularly relates to an environment-friendly anti-oxidation carton adhesive and a preparation method thereof. The adhesive comprises the following components: dry starch, p-aminophenol epoxy resin, hydrogen peroxide, borax, sodium dicyandiamide, dimethyl carbonate, phthalic anhydride polyester polyol, polyethylene terephthalate, triethanolamine and antioxidant. The anti-oxidant is a compound of hindered phenol, phosphite ester, and a metal ion chelating agent. The adhesive not only has high bonding strength, but also has the effects of non-discoloring, mildewing and the like when used for a long time.

Abstract: The invention belongs to the technical field of binders, and particularly relates to an environment-friendly anti-oxidation carton adhesive and a preparation method thereof. The adhesive comprises the following components: dry starch, p-aminophenol epoxy resin, hydrogen peroxide, borax, sodium dicyandiamide, dimethyl carbonate, phthalic anhydride polyester polyol, polyethylene terephthalate, triethanolamine and antioxidant. The anti-oxidant is a compound of hindered phenol, phosphite ester, and a metal ion chelating agent. The adhesive not only has high bonding strength, but also has the effects of non-discoloring, mildewing and the like when used for a long time.

Abstract: The present invention provides a preparation method of an oxidized anticoagulant starch adhesive, comprising the following steps: (1) an original starch and deionized water are mixed to form a starch emulsion, then the pH is adjusted to perform an oxidation reaction; a reductant is added to react with the unreacted oxidant, after the reaction is completed, an esterifying agent is added to perform an esterification reaction after adjusting pH; then a product is neutralized, washed, filtered and dried to obtain starch granules; and (2) a 40-50% starch emulsion is formulated by using the starch granules obtained in the step (1), the pH is adjusted to 6.5-7.5 after gelatinization, and dispersing agent, defoamer and water are added to form a starch adhesive. The esterifying agent used is composed of an anion and a cation, which significantly improves anticoagulant effect of the starch adhesive.

Abstract: The present disclosure relates to a modified environment-friendly corn starch adhesive, comprising the following components in parts by weight: 30 parts of corn starch, 300-400 parts of water, 0.2-3 parts of oxidant, and 80-120 parts of polyvinyl alcohol, 1-5 parts of cross-linking agent, 3-5 parts of calcium chloride, 0.1-3 parts of urea, 0.2-0.5 parts of defoamer, and an appropriate amount of sodium hydroxide (to adjust pH), the cross-linking agent is a modified boric acid cross-linking agent prepared by reacting boric acid with epichlorohydrin, water and citric acid at 80-100° C. The surface of the modified boric acid cross-linking agent is bonded with a large number of epoxy groups and carboxyl groups, which can react with the carboxyl and aldehyde groups of the oxidized starch. These reactions can form synergistic effect with boric acid, which together improve the bonding efficiency and improve the adhesive strength of the colloid.

Abstract: The present disclosure provides a resin modified starch adhesive. The resin modified starch adhesive comprises, by weight, 100 parts of a dry starch, 300-500 parts of deionized water, 20-40 parts of an epoxy resin, 5-10 parts of an azido polyether, 1-2 parts of 3, 5-diamido-1, 2, 4-triazole, 1-3 parts of a cyanoacrylate, 5-10 parts of sodium hypochlorite solution, 3-8 parts of sodium tripolyphosphate, 2-5 parts of hydrotalcite, 3-8 parts of kaolin and 1-4 parts of sodium sulfate. The starch adhesive is prepared by modifying an oxidized starch emulsion with an epoxy resin modified by the azido polyether to introduce reactive functional groups and water-resisting five-membered ring structures, thus the shear strength and the water resistance of the adhesive are greatly improved.

Abstract: The invention belongs to the technical field of binders, and particularly relates to an environment-friendly anti-oxidation carton adhesive and a preparation method thereof. The adhesive comprises the following components: dry starch, p-aminophenol epoxy resin, hydrogen peroxide, borax, sodium dicyandiamide, dimethyl carbonate, phthalic anhydride polyester polyol, polyethylene terephthalate, triethanolamine and antioxidant. The anti-oxidant is a compound of hindered phenol, phosphite ester, and a metal ion chelating agent. The adhesive not only has high bonding strength, but also has the effects of non-discoloring, mildewing and the like when used for a long time.

Abstract: The present invention provides a preparation method of an oxidized anticoagulant starch adhesive, comprising the following steps: (1) an original starch and deionized water are mixed to form a starch emulsion, then the pH is adjusted to perform an oxidation reaction; a reductant is added to react with the unreacted oxidant, after the reaction is completed, an esterifying agent is added to perform an esterification reaction after adjusting pH; then a product is neutralized, washed, filtered and dried to obtain starch granules; and (2) a 40-50% starch emulsion is formulated by using the starch granules obtained in the step (1), the pH is adjusted to 6.5-7.5 after gelatinization, and dispersing agent, defoamer and water are added to form a starch adhesive. The esterifying agent used is composed of an anion and a cation, which significantly improves anticoagulant effect of the starch adhesive.

Abstract: A preparation method of an antibacterial deodorizing modified fiber for water purification is provided. Maleic anhydride is used to perform an addition reaction with sodium polysulfide to generate a disulfide antibacterial agent I, the disulfide antibacterial agent I continues to react with 2-amino-5-nitropyridine in an acetic acid solution under the catalysis of sodium acetate to obtain a compound II, then, the nitro in the compound II is reduced into amino by ferrous sulfate, meanwhile, anhydride is hydrolyzed into carboxylic acid in a faintly acid aqueous solution to obtain a compound III, and finally, under alkaline conditions, the amino in the compound III reacts with the cyan in a polyacrylonitrile fiber to obtain a modified polyacrylonitrile fiber. The prepared modified polyacrylonitrile fiber can remove various heavy metals in sewage and has good antibacterial and anti-mildew effects, thereby achieving the effects of water purification and deodorization.

Abstract: Hydrocarbyl tin complexs of alkynyl phosphonic acid with antitumor activity and their application are provided. Tests are conducted to evaluate activity, showing that the provided complexs have much stronger activity than cisplatin. The provided hydrocarbyl tin complexs can be potential candidate as a clinical antitumor drug.

Abstract: Hydrocarbyl tin complexs of alkynyl phosphonic acid with antitumor activity and their preparation method are provided in present invention. Tests are conducted to evaluate activity, showing that the provided complexs have much stronger activity than cisplatin, especially for human colon cancer. The provided hydrocarbyl tin complexs can be potential candidate as a clinical antitumor drug.