Novel mildew-proof bactericide for papermaking

Abstract

The invention relates to the technical field of papermaking bactericides, and discloses a novel mildew-proof bactericide for papermaking, which is prepared from the following raw materials in parts by weight: 10 to 30 parts of dithiocyano-methane and 5 to 15 parts of boric acid. A preparation method of the novel mildew-proof bactericide for papermaking comprises the following steps: step 1, heating the water in parts by mass, adding the dithiocyano-methane, the boric acid, the methacrylamide, the surfactant and the deionized water after heating, mixing and stirring, and starting stirring at the rotating speed of 200-600r / min to obtain a mixed solution; 2, amino trimethylene phosphonic acid, 2, 3-dimethyl-2, 3-butanediol, nonylphenol polyoxyethylene ether, activated carbon, calcium carbonate, 2-aminophenol-4-sulfonylaniline, dithianon and 2, 6-dimethyl-5-heptenal are sequentially added into the mixed solution obtained in the step 1 to be mixed, the temperature is increased to 70-90 DEG C at the moment, and stirring is conducted for 2-3 h; and step 3, after the reaction is finished, naturally cooling to normal temperature, and discharging to obtain the mildew-proof bactericide for papermaking.

Description

Technical Field

[0001] The invention relates to the technical field of papermaking fungicides, in particular to a novel anti-mildew fungicide for papermaking. Background Art

[0002] Papermaking fungicide is a new type of chemical agent used for papermaking sterilization and mildew prevention. It has excellent characteristics such as high efficiency, broad spectrum, and low toxicity. It can kill and remove harmful bacteria in pulp in a short time. There are many types of papermaking fungicides, which can be divided into inorganic fungicides and organic fungicides according to their molecular structures.

[0003] However, the existing antibacterial and anti-mildew effects of papermaking antifungal and fungicide are poor, the system scaling is relatively serious, and it contains a large amount of inorganic ions. Long-term use will cause the conductivity of white water to increase, thereby leading to a decrease in paper strength performance, poor sizing effect, and easy appearance of color spots or dull color. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies of the prior art, the present invention provides a novel mildew-proofing and fungicide for papermaking, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution To achieve the above purpose, the present invention provides the following technical scheme: a novel mildewproof and fungicide for papermaking, comprising the following raw materials in parts by weight: 10-30 parts of dithiocyanomethane, 5-15 parts of boric acid, 10-20 parts of methacrylamide, 9-20 parts of surfactant, 20-50 parts of water, 5-15 parts of aminotrimethylenephosphonic acid, 5-15 parts of 2,3-dimethyl-2,3-butanediol, 50-90 parts of deionized water, 3-10 parts of nonylphenol polyoxyethylene ether, 1-5 parts of activated carbon, 3-10 parts of calcium carbonate, 2-7 parts of 2-aminophenol-4-sulfonylanilide, 2-6 parts of dicyanoanthraquinone, and 1-5 parts of 2,6-dimethyl-5-heptenal.

[0006] Preferably, the raw materials are included in the following parts by mass: 10 parts of dithiocyanomethane, 15 parts of boric acid, 10 parts of methacrylamide, 15 parts of a surfactant, 30 parts of water, 5 parts of aminotrimethylenephosphonic acid, 15 parts of 2,3-dimethyl-2,3-butanediol, 90 parts of deionized water, 10 parts of nonylphenol polyoxyethylene ether, 3 parts of activated carbon, 7 parts of calcium carbonate, 4 parts of 2-aminophenol-4-sulfonylanilide, 2 parts of dicyanoanthraquinone, and 3 parts of 2,6-dimethyl-5-heptenal.

[0007] Preferably, the raw materials are included in the following parts by mass: 15 parts of dithiocyanomethane, 15 parts of boric acid, 10 parts of methacrylamide, 20 parts of a surfactant, 30 parts of water, 8 parts of aminotrimethylenephosphonic acid, 15 parts of 2,3-dimethyl-2,3-butanediol, 70 parts of deionized water, 7 parts of nonylphenol polyoxyethylene ether, 5 parts of activated carbon, 7 parts of calcium carbonate, 4 parts of 2-aminophenol-4-sulfonylanilide, 2 parts of dicyanoanthraquinone, and 3 parts of 2,6-dimethyl-5-heptenal.

[0008] Preferably, the raw materials are included in the following parts by mass: 20 parts of dithiocyanomethane, 15 parts of boric acid, 15 parts of methacrylamide, 20 parts of a surfactant, 30 parts of water, 8 parts of aminotrimethylenephosphonic acid, 15 parts of 2,3-dimethyl-2,3-butanediol, 90 parts of deionized water, 8 parts of nonylphenol polyoxyethylene ether, 5 parts of activated carbon, 6 parts of calcium carbonate, 4 parts of 2-aminophenol-4-sulfonylanilide, 2 parts of dicyanoanthraquinone, and 3 parts of 2,6-dimethyl-5-heptenal.

[0009] Preferably, the surfactant is dodecyldimethylbenzyl ammonium bromide, dodecylamine propionate, and polysorbate in a mass ratio of 8-12:5-10:1-3.

[0010] Preferably, the method comprises the following steps: Step 1: taking the above-mentioned mass fraction of water and heating it, adding dithiocyanomethane, boric acid, methacrylamide, a surfactant and deionized water to mix and stir, and starting stirring at a speed of 200 to 600 r / min to obtain a mixed solution; Step 2: Then, aminotrimethylenephosphonic acid, 2,3-dimethyl-2,3-butanediol, nonylphenol polyoxyethylene ether, activated carbon, calcium carbonate, 2-aminophenol-4-sulfonylanilide, dicyanoanthraquinone and 2,6-dimethyl-5-heptenal are sequentially added to the mixed solution in step 1 and mixed, and the temperature is raised to 70 to 90 ° C and stirred for 2 to 3h; Step 3: After the reaction is completed, the mixture is naturally cooled to room temperature, and the resulting material is a mildew-proofing and fungicide for papermaking.

[0011] (III) Beneficial effects Compared with the prior art, the present invention provides a new mildew-proof fungicide for papermaking, which has the following beneficial effects: 1. The new mildew-proof fungicide for papermaking uses dithiocyanomethane to prevent the attachment and aggregation of microorganisms and inhibit the growth and reproduction of microorganisms, making the mildew-proof fungicide have a better antibacterial effect. Boric acid and calcium carbonate and other substances are used to reduce the pH value to avoid the introduction of too many conductive ions, thereby controlling the stability of white water conductivity. When dodecyl dimethyl benzyl ammonium bromide is used for microbial control and cleaning of circulating water systems, the bactericidal performance is stable because the bromine atom in the molecule replaces the chlorine atom. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] Embodiment 1: A novel mildewproofing and fungicide for papermaking, comprising the following raw materials in parts by weight: 10-30 parts of dithiocyanomethane, 5-15 parts of boric acid, 10-20 parts of methacrylamide, 9-20 parts of surfactant, 20-50 parts of water, 5-15 parts of aminotrimethylenephosphonic acid, 5-15 parts of 2,3-dimethyl-2,3-butanediol, 50-90 parts of deionized water, 3-10 parts of nonylphenol polyoxyethylene ether, 1-5 parts of activated carbon, 3-10 parts of calcium carbonate, 2-7 parts of 2-aminophenol-4-sulfonylanilide, 2-6 parts of dicyanoanthraquinone, and 1-5 parts of 2,6-dimethyl-5-heptenal; The surfactant is prepared by mixing dodecyl dimethyl benzyl ammonium bromide, dodecylamine propionate and polysorbate in a mass ratio of 8-12:5-10:1-3.

[0014] In the present invention, a novel mildew-proofing and fungicide for papermaking comprises the following steps: Step 1: taking the above-mentioned mass fraction of water and heating it, adding dithiocyanomethane, boric acid, methacrylamide, a surfactant and deionized water to mix and stir, and starting stirring at a speed of 200 to 600 r / min to obtain a mixed solution; Step 2: Then, aminotrimethylenephosphonic acid, 2,3-dimethyl-2,3-butanediol, nonylphenol polyoxyethylene ether, activated carbon, calcium carbonate, 2-aminophenol-4-sulfonylanilide, dicyanoanthraquinone and 2,6-dimethyl-5-heptenal are sequentially added to the mixed solution in step 1 and mixed, and the temperature is raised to 70 to 90 ° C and stirred for 2 to 3h; In the present invention, dithiocyanomethane is used to prevent the attachment and aggregation of microorganisms, and the growth and reproduction of microorganisms are inhibited, so that the antibacterial effect of the mildew-proof fungicide is better. Boric acid and calcium carbonate and other substances are used to reduce the pH value to avoid the introduction of excessive conductive ions, thereby controlling the stability of the conductivity of white water. When dodecyl dimethyl benzyl ammonium bromide is used for microbial control and cleaning of circulating water systems, the bactericidal performance is stabilized because the bromine atom in the molecule replaces the chlorine atom.

[0015] Embodiment 2: A novel mildewproofing and fungicide for papermaking, comprising the following raw materials in parts by weight: 10 parts of dithiocyanomethane, 15 parts of boric acid, 10 parts of methacrylamide, 15 parts of surfactant, 30 parts of water, 5 parts of aminotrimethylenephosphonic acid, 15 parts of 2,3-dimethyl-2,3-butanediol, 90 parts of deionized water, 10 parts of nonylphenol polyoxyethylene ether, 3 parts of activated carbon, 7 parts of calcium carbonate, 4 parts of 2-aminophenol-4-sulfonylanilide, 2 parts of dicyanoanthraquinone, and 3 parts of 2,6-dimethyl-5-heptenal; The surfactant is prepared by mixing dodecyl dimethyl benzyl ammonium bromide, dodecylamine propionate and polysorbate in a mass ratio of 8-12:5-10:1-3.

[0016] In the present invention, a novel mildew-proofing and fungicide for papermaking comprises the following steps: Step 1: taking the above-mentioned mass fraction of water and heating it, adding dithiocyanomethane, boric acid, methacrylamide, a surfactant and deionized water to mix and stir, and starting stirring at a speed of 200 to 600 r / min to obtain a mixed solution; Step 2: Then, aminotrimethylenephosphonic acid, 2,3-dimethyl-2,3-butanediol, nonylphenol polyoxyethylene ether, activated carbon, calcium carbonate, 2-aminophenol-4-sulfonylanilide, dicyanoanthraquinone and 2,6-dimethyl-5-heptenal are sequentially added to the mixed solution in step 1 and mixed, and the temperature is raised to 70 to 90 ° C and stirred for 2 to 3h; Step 3: After the reaction is completed, the mixture is naturally cooled to room temperature, and the resulting material is a mildew-proofing and fungicide for papermaking.

[0017] Embodiment 3: A novel mildewproofing and fungicide for papermaking, comprising the following raw materials in parts by weight: 15 parts of dithiocyanomethane, 15 parts of boric acid, 10 parts of methacrylamide, 20 parts of surfactant, 30 parts of water, 8 parts of aminotrimethylenephosphonic acid, 15 parts of 2,3-dimethyl-2,3-butanediol, 70 parts of deionized water, 7 parts of nonylphenol polyoxyethylene ether, 5 parts of activated carbon, 7 parts of calcium carbonate, 4 parts of 2-aminophenol-4-sulfonylanilide, 2 parts of dicyanoanthraquinone, and 3 parts of 2,6-dimethyl-5-heptenal; The surfactant is prepared by mixing dodecyl dimethyl benzyl ammonium bromide, dodecylamine propionate and polysorbate in a mass ratio of 8-12:5-10:1-3.

[0018] In the present invention, a novel mildew-proofing and fungicide for papermaking comprises the following steps: Step 1: taking the above-mentioned mass fraction of water and heating it, adding dithiocyanomethane, boric acid, methacrylamide, a surfactant and deionized water to mix and stir, and starting stirring at a speed of 200 to 600 r / min to obtain a mixed solution; Step 2: Then, aminotrimethylenephosphonic acid, 2,3-dimethyl-2,3-butanediol, nonylphenol polyoxyethylene ether, activated carbon, calcium carbonate, 2-aminophenol-4-sulfonylanilide, dicyanoanthraquinone and 2,6-dimethyl-5-heptenal are sequentially added to the mixed solution in step 1 and mixed, and the temperature is raised to 70 to 90 ° C and stirred for 2 to 3h; Step 3: After the reaction is completed, the mixture is naturally cooled to room temperature, and the resulting material is a mildew-proofing and fungicide for papermaking.

[0019] Embodiment 4: A novel mildewproofing and fungicide for papermaking, comprising the following raw materials in parts by weight: 20 parts of dithiocyanomethane, 15 parts of boric acid, 15 parts of methacrylamide, 20 parts of surfactant, 30 parts of water, 8 parts of aminotrimethylenephosphonic acid, 15 parts of 2,3-dimethyl-2,3-butanediol, 90 parts of deionized water, 8 parts of nonylphenol polyoxyethylene ether, 5 parts of activated carbon, 6 parts of calcium carbonate, 4 parts of 2-aminophenol-4-sulfonylanilide, 2 parts of dicyanoanthraquinone, and 3 parts of 2,6-dimethyl-5-heptenal; The surfactant is prepared by mixing dodecyl dimethyl benzyl ammonium bromide, dodecylamine propionate and polysorbate in a mass ratio of 8-12:5-10:1-3.

[0020] In the present invention, a novel mildew-proofing and fungicide for papermaking comprises the following steps: Step 1: taking the above-mentioned mass fraction of water and heating it, adding dithiocyanomethane, boric acid, methacrylamide, a surfactant and deionized water to mix and stir, and starting stirring at a speed of 200 to 600 r / min to obtain a mixed solution; Step 2: Then, aminotrimethylenephosphonic acid, 2,3-dimethyl-2,3-butanediol, nonylphenol polyoxyethylene ether, activated carbon, calcium carbonate, 2-aminophenol-4-sulfonylanilide, dicyanoanthraquinone and 2,6-dimethyl-5-heptenal are sequentially added to the mixed solution in step 1 and mixed, and the temperature is raised to 70 to 90 ° C and stirred for 2 to 3h; Step 3: After the reaction is completed, the mixture is naturally cooled to room temperature, and the resulting material is a mildew-proofing and fungicide for papermaking.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel mildewproof and fungicide for papermaking, comprising the following raw materials in parts by weight: 10-30 parts of dithiocyanomethane, 5-15 parts of boric acid, 10-20 parts of methacrylamide, 9-20 parts of surfactant, 20-50 parts of water, 5-15 parts of aminotrimethylenephosphonic acid, 5-15 parts of 2,3-dimethyl-2,3-butanediol, 50-90 parts of deionized water, 3-10 parts of nonylphenol polyoxyethylene ether, 1-5 parts of activated carbon, 3-10 parts of calcium carbonate, 2-7 parts of 2-aminophenol-4-sulfonylanilide, 2-6 parts of dicyanoanthraquinone, and 1-5 parts of 2,6-dimethyl-5-heptenal.

2. The novel mildew-proofing and fungicide for papermaking according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 10 parts of dithiocyanomethane, 15 parts of boric acid, 10 parts of methacrylamide, 15 parts of a surfactant, 30 parts of water, 5 parts of aminotrimethylenephosphonic acid, 15 parts of 2,3-dimethyl-2,3-butanediol, 90 parts of deionized water, 10 parts of nonylphenol polyoxyethylene ether, 3 parts of activated carbon, 7 parts of calcium carbonate, 4 parts of 2-aminophenol-4-sulfonylanilide, 2 parts of dicyanoanthraquinone and 3 parts of 2,6-dimethyl-5-heptenal.

3. The novel mildew-proofing and fungicide for papermaking according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 15 parts of dithiocyanomethane, 15 parts of boric acid, 10 parts of methacrylamide, 20 parts of surfactant, 30 parts of water, 8 parts of aminotrimethylenephosphonic acid, 15 parts of 2,3-dimethyl-2,3-butanediol, 70 parts of deionized water, 7 parts of nonylphenol polyoxyethylene ether, 5 parts of activated carbon, 7 parts of calcium carbonate, 4 parts of 2-aminophenol-4-sulfonylanilide, 2 parts of dicyanoanthraquinone and 3 parts of 2,6-dimethyl-5-heptenal.

4. The novel mildew-proofing and fungicide for papermaking according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 20 parts of dithiocyanomethane, 15 parts of boric acid, 15 parts of methacrylamide, 20 parts of surfactant, 30 parts of water, 8 parts of aminotrimethylenephosphonic acid, 15 parts of 2,3-dimethyl-2,3-butanediol, 90 parts of deionized water, 8 parts of nonylphenol polyoxyethylene ether, 5 parts of activated carbon, 6 parts of calcium carbonate, 4 parts of 2-aminophenol-4-sulfonylanilide, 2 parts of dicyanoanthraquinone and 3 parts of 2,6-dimethyl-5-heptenal.

5. The novel mildew-proofing and fungicide for papermaking according to claim 1, characterized in that: The surfactant is prepared by mixing dodecyl dimethyl benzyl ammonium bromide, dodecylamine propionate and polysorbate in a mass ratio of 8-12:5-10:1-3.

6. A novel mildew-proofing and fungicide for papermaking according to claims 1-4, characterized in that: The following steps are involved: Step 1: taking the above-mentioned mass fraction of water and heating it, adding dithiocyanomethane, boric acid, methacrylamide, a surfactant and deionized water to mix and stir, and starting stirring at a speed of 200 to 600 r / min to obtain a mixed solution; Step 2: Then, aminotrimethylenephosphonic acid, 2,3-dimethyl-2,3-butanediol, nonylphenol polyoxyethylene ether, activated carbon, calcium carbonate, 2-aminophenol-4-sulfonylanilide, dicyanoanthraquinone and 2,6-dimethyl-5-heptenal are sequentially added to the mixed solution in step 1 and mixed, and the temperature is raised to 70 to 90 ° C and stirred for 2 to 3h; Step 3: After the reaction is completed, the mixture is naturally cooled to room temperature, and the resulting material is a mildew-proofing and fungicide for papermaking.