Papermaking sterilization preservative

A technology of bactericidal preservatives and emulsifiers, applied in paper and other fields, can solve problems such as difficult microbial control, achieve the effects of inhibiting micro-growth and reproduction, eliminating interfering substances, and broadening the spectrum of bacteria

Inactive Publication Date: 2010-10-20
广东省石油化工研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

④The deposition of these substances can interact with microbial slud...

Method used

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Examples

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preparation example Construction

[0021] The preparation method of the papermaking antiseptic and antiseptic agent of the present invention is as follows: mix and dissolve thiocyanate, dithiocyanomethane and a certain amount of solvent, add the emulsifier and stir evenly, slowly add the polyguanidine aqueous agent, stir evenly, and discharge the material Barreled. Or mix and dissolve the benzene thiamine, methane dithiocyanate and a quantitative solvent, add the emulsifier and stir evenly, slowly add it to the polyguanidine aqueous agent, stir evenly, and then discharge the material into a bucket.

[0022] When the papermaking antiseptic preservative provided by the present invention is used, different dosing points, dosing amounts and dosing methods can be selected according to specific production conditions. It is generally recommended to add it in the pulping tank, the broken paper tank, the high-position tank, the white tank under the net, etc.; generally, the intermittent dosing method is used, and the medic...

Embodiment 1

[0025] The specific composition of the papermaking antiseptic preservative in this embodiment is as follows:

[0026] Take 83.33 parts by weight of benzothiazide (30wt% TCMTB, that is, the content of thiocyanomethylthiobenzothiazole in the papermaking sterilization preservative is 25%), 4 parts by weight of solvent, and 6 parts by weight of emulsifier After stirring uniformly, slowly add 6.67 parts by weight of polyguanidine aqueous solution (75% polyhexamethylene guanidine hydrochloride, that is, the content of polyhexamethylene guanidine hydrochloride in the papermaking sterilization preservative is 5%), and stir evenly Discharge into barrels.

[0027] Wherein: the solvent is a mixed solvent of isopropanol and 3-methyl-1-butanol with a weight ratio of 5:2. The emulsifier is polyethylene glycol 200 and Span 40 in a weight ratio of 2:1.

Embodiment 2

[0029] The specific composition of the papermaking antiseptic preservative in this embodiment is as follows:

[0030] Take 66.67 parts by weight of benzothiazide (30% TCMTB), 5 parts by weight of dithiocyanomethane (MBT), 15.66 parts by weight of solvent, stir to dissolve, add 6 parts by weight of emulsifier and stir evenly, then slowly add 6.67 parts by weight of polyguanidine aqueous agent (75% polyhexamethylene guanidine hydrochloride), stirred uniformly, and discharged into buckets. Wherein: the solvent is a mixed solvent of 3-methyl-1-butanol, xylene and tetrahydrofuran in a weight ratio of 2:5:10. The emulsifier is polyethylene glycol 200, polyethylene glycol 600 and Span 40 in a weight ratio of 2:1:2.

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PUM

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Abstract

The invention provides a papermaking sterilization preservative, which comprises the following components in percentage by weight: 5 to 25 percent of 2-thiocyanomethylthionbenzothiazole, 0 to 10 percent of dithiocyano-methane, 5 to 25 percent of polyhexamethylene guanidine hydrochloride, 3 to 6 percent of emulsifying agent and the balance of water and organic solvent. The papermaking sterilization preservative can be added into a papermaking white water system to play a role in killing microbes, inhibiting micro growth and propagation and eliminating interfering substances in the white water system so as to keep the clean state of the white water system, improve the cyclic utilization rate of white water and improve the production efficiency and the product quality.

Description

Technical field [0001] The invention relates to an industrial bactericide, in particular to a bactericidal and preservative used in the papermaking industry. Background technique [0002] The paper industry is my country's main pillar industry. The huge papermaking output also brings huge market space for the papermaking chemicals industry. Faced with issues such as increasing paper quality and quality requirements, increasingly severe resource constraints, and environmental protection, China’s paper industry has urged China’s paper industry to actively adjust its industrial structure and improve its green production level. The chemical industry has brought new development opportunities. [0003] The paper industry is a traditional industrial water user. The papermaking process requires a lot of water to fully disperse and disperse the paper fibers and fillers. Before papermaking, the content of paper fibers and various filler additives only accounted for 0.5% of the white wate...

Claims

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Application Information

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IPC IPC(8): D21H21/36
Inventor 黄奇然赵天翼杨伟和栾安博邱美坚陈小丹汤小燕
Owner 广东省石油化工研究院
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