CN102827100A - Rubber vulcanization accelerator DM waste treatment method - Google Patents
Rubber vulcanization accelerator DM waste treatment method Download PDFInfo
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- CN102827100A CN102827100A CN2012103619902A CN201210361990A CN102827100A CN 102827100 A CN102827100 A CN 102827100A CN 2012103619902 A CN2012103619902 A CN 2012103619902A CN 201210361990 A CN201210361990 A CN 201210361990A CN 102827100 A CN102827100 A CN 102827100A
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- mbt
- sodium salt
- accelerator
- vulcanization accelerator
- rubber vulcanization
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- Processing Of Solid Wastes (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention relates to a rubber vulcanization accelerator DM waste treatment method which comprises the following steps: stirring and pulping DM waste and water in a mass ratio of 1:2, and meanwhile, adding sodium hydroxide which is 2-2.5 times of DM by molar weight; heating to 50-70 DEG C, and keeping the temperature for 15-60 minutes; and after the solution becomes clear, filtering to obtain an accelerator MBT (2-mercaptobenzthiazole) sodium salt, and neutralizing the sodium salt with dilute sulfuric acid until the pH value is 7, thereby obtaining the accelerator MBT. The DM and sodium hydroxide react at high temperature to generate the MBT sodium salt, thereby implementing separation from impurity components; and the MBT sodium salt is neutralized to obtain the accelerator MBT. The melting point of the MBT product is up to higher than 170 DEG C, and the yield is up to higher than 75%; and the invention implements waste reclamation.
Description
Technical field
The present invention relates to a kind of thiofide 2,2-dimercapto bisbenzothiazole (DM) method for treatment of waste material belongs to the rubber vulcanization accelerator DM technical field.
Background technology
Dibenzothiazole disulfide (being called for short DM), its structural formula does
Its promotion is renderd a service between D and M, is the universal promotor of natural gum, synthetical glue, shoddy, can produce MC medium curing stably; Curing temperature is higher, and operational safety is difficult for bin cure; Pollution-free, goods are bright-coloured, disperse easily when cooperating with rubber; Be widely used in general industry goods such as making tire, sebific duct, rubber overshoes, adhesive plaster, the home market YO reaches more than ten thousand tons.Along with development of modern industry, the application of rubber vulcanization accelerator DM is more and more wider.The DM production technique is by accelerant MBT oxidizing reaction to take place under the oxygenant effect to generate.Owing to contain the part resinous principle among the raw material MBT, do not influence quality product if oxidizing condition control does not with great difficulty generate by product.Simultaneously Workshop Production occurs running phenomenon such as material easily and causes the substandard product appearance.Because the character of DM own is insoluble to OOS, technologies such as general extraction are difficult to its refinement treatment.Method in common is separated with impurity for utilizing sodium sulphite that DM is reduced into MBT at present, and gained M sodium salt obtains DM through further oxidation.This kind method complex procedures, and yield is lower.Therefore this patent adopts a kind of novel method that the DM waste material is handled.
Summary of the invention
The object of the present invention is to provide a kind of treatment process of rubber vulcanization accelerator DM waste material.For achieving the above object, the present invention realizes through following technical proposals:
A kind of rubber vulcanization accelerator DM waste disposal novel method comprises following process: DM waste material and water are carried out stirring to pulp with mass ratio 1:2 ratio, add relative DM molar weight 2-2.5 sodium hydroxide doubly simultaneously.Be warming up to 50-70 ℃ of insulation 15-60 minute.Treat that solution clarification after-filtration gets the accelerant MBT sodium salt, it is 7 that the gained sodium salt is neutralized to PH by dilute sulphuric acid, gets accelerant MBT.
The present invention proposes a kind of treatment process of altax waste material, and DM and sodium hydroxide at high temperature react and generates the MBT sodium salt, and realization separates with impurity component; Neutralize accelerant MBT; MBT product fusing point reaches more than 170 ℃, and yield reaches more than 75%, has realized waste reclaimation.
Embodiment
Embodiment 1:
Take by weighing DM waste material 30g, water 60g, sodium hydroxide 7.3g places beaker, opens and stirs.Beaker slowly is warming up to 50 ℃, and is incubated 15 minutes.It is 7 that solution filtration back dropping dilute sulphuric acid is neutralized to PH.Get MBT22.6g after the oven dry.Through 173 ℃ of check fusing points, be salable product.Yield 75%.
Embodiment 2:
Take by weighing DM waste material 30g, water 90g, sodium hydroxide 8.3g places beaker, opens and stirs.Beaker slowly is warming up to 60 ℃, and is incubated 30 minutes.It is 7 that solution filtration back dropping dilute sulphuric acid is neutralized to PH.Get MBT23.5g after the oven dry.Through 171 ℃ of check fusing points, be salable product.Yield 78%.
Embodiment 3:
Take by weighing DM waste material 30g, water 120g, sodium hydroxide 9g places beaker, opens and stirs.Beaker slowly is warming up to 70 ℃, and is incubated 60 minutes.It is 7 that solution filtration back dropping dilute sulphuric acid is neutralized to PH.Get MBT24.1g after the oven dry.Through 170 ℃ of check fusing points, be salable product.Yield 80%.
Claims (1)
1. rubber vulcanization accelerator DM method for treatment of waste material, its characteristic exists: DM waste material and water are carried out stirring to pulp with mass ratio 1:2 ratio, add relative DM molar weight 2-2.5 sodium hydroxide doubly simultaneously; Be warming up to 50-70 ℃ of insulation 15-60 minute; Treat that solution clarification after-filtration gets the accelerant MBT sodium salt, it is 7 that the gained sodium salt is neutralized to PH by dilute sulphuric acid, gets accelerant MBT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103619902A CN102827100A (en) | 2012-09-25 | 2012-09-25 | Rubber vulcanization accelerator DM waste treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103619902A CN102827100A (en) | 2012-09-25 | 2012-09-25 | Rubber vulcanization accelerator DM waste treatment method |
Publications (1)
| Publication Number | Publication Date |
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| CN102827100A true CN102827100A (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012103619902A Pending CN102827100A (en) | 2012-09-25 | 2012-09-25 | Rubber vulcanization accelerator DM waste treatment method |
Country Status (1)
| Country | Link |
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| CN (1) | CN102827100A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5276206A (en) * | 1992-05-27 | 1994-01-04 | Bayer Aktiengesellschaft | Method of preparing 2-mercaptobenzothiazole and benzothiazole |
| CN101134748A (en) * | 2007-09-10 | 2008-03-05 | 天津市科迈化工有限公司 | Method for producing rubber vulcanization accelerator DM |
| CN101289464A (en) * | 2008-05-22 | 2008-10-22 | 浙江工业大学 | Process for recovering triphenyl phosphine oxide and 2-mercaptobenzothiazole from production waste liquid of cephalothin active ester |
-
2012
- 2012-09-25 CN CN2012103619902A patent/CN102827100A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5276206A (en) * | 1992-05-27 | 1994-01-04 | Bayer Aktiengesellschaft | Method of preparing 2-mercaptobenzothiazole and benzothiazole |
| CN101134748A (en) * | 2007-09-10 | 2008-03-05 | 天津市科迈化工有限公司 | Method for producing rubber vulcanization accelerator DM |
| CN101289464A (en) * | 2008-05-22 | 2008-10-22 | 浙江工业大学 | Process for recovering triphenyl phosphine oxide and 2-mercaptobenzothiazole from production waste liquid of cephalothin active ester |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20121219 |