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Accelerant TBSI granulation binder and TBSI granulation method

A binder and accelerator technology, which is applied in the direction of granulation of special binders, adhesives, non-polymer organic compound adhesives, etc., can solve problems such as insufficient hardness, low granulation rate, and difficulty in dispersion, and achieve tear-off Advantages in elongation, high granulation rate at one time, and easy industrialization

Inactive Publication Date: 2011-04-27
KEMAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the granulation process, if too much binder is added or the selection is inappropriate, the granules will be too hard and it will be difficult to disperse. During the transportation and handling process, the particles re-dispersed, failing to achieve the purpose of granulation
[0004] During the application process of CBS granules, the hardness of the granules is too high, resulting in difficulty in dispersion, unevenness, and long mixing time. Purpose

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] Prepare the binder according to the attached table 1, add the prepared binder into the mixing pot together with the TBSI wet material at a ratio of 1‰ of the weight of the TBSI dry product, the TBSI wet material contains 25% of the water, and stir thoroughly After mixing, put it into the granulator, and convey the wet material through the screw to extrude uniform cylindrical particles with a diameter of 2±0.2mm from the die plate hole of the machine head. After drying at 70°C in a belt dryer, use The vibrating sieve separates granules and powder, the granular products on the sieve are directly packaged as finished products, and the powder under the sieve is returned to the stirring pot for re-stirring and granulation. The one-time granulation rate of granulated products using this method is as high as 80%, and the average hardness is about 2.00N, which can fully meet the requirements of users, and the product performance is no different from that of TBSI powder.

[0029...

example 2

[0032] Prepare the binder according to the attached table 2, add the prepared binder into the mixing pot together with the TBSI wet material at a ratio of 5‰ of the weight of the TBSI dry product, and the water content of the TBSI wet material is 15%, after fully stirring After mixing, put it into the granulator, and convey the wet material through the screw to extrude uniform cylindrical particles with a diameter of 2±0.2mm from the die plate hole of the machine head. After drying at 75°C with a belt dryer, use The vibrating sieve separates granules and powder, the granular products on the sieve are directly packaged as finished products, and the powder under the sieve is returned to the stirring pot for re-stirring and granulation. The one-time granulation rate of granulated products using this method is as high as 81.7%, and the average hardness is about 2.00N, which can fully meet the requirements of users, and the product performance is no different from that of TBSI powde...

example 3

[0037] Prepare the binder according to the attached table 2, add the prepared binder into the mixing pot together with the TBSI wet material at a ratio of 2% of the weight of the TBSI dry product, the TBSI wet material contains 2% of the water, and stir thoroughly After mixing, put it into the granulator, and convey the wet material through the screw to extrude uniform cylindrical particles with a diameter of 2±0.2mm from the die plate hole of the machine head. After drying in a belt dryer at 85°C, use The vibrating sieve separates granules and powder, the granular products on the sieve are directly packaged as finished products, and the powder under the sieve is returned to the stirring pot for re-stirring and granulation. The one-time granulation rate of granulated products using this method is as high as 83.5%, and the average hardness is about 2.00N, which can fully meet the requirements of users, and the product performance is no different from that of TBSI powder.

[003...

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Abstract

The invention relates to an accelerant N-tertiary butyl bi (2-benzothiazole) sulfenimide (TBSI) granulation binder and a TBSI granulation method. The binder consists of polyvinyl alcohol, povidone, vinyl acetate, liquid paraffin, emulsifier, polyoxyethylene, dispersant, NaHCO3 and water. The method comprises the following steps of: adding the binder into TBSI wet materials, fully stirring the binder and the wet materials uniformly, adding the mixture into a granulator, and extruding the wet materials into uniform cylindrical granules with diameters of 2+ / -0.2 millimeters from a head template hole by delivery of a screw; and drying the granules through a belt dryer at the temperature of between 70 and 85 DEG C, separating the granules and powder by using a vibrating screen, and directly packing the granular products on the screen into finished products. The granulation method provided by the invention has simple process and is easy for industrialization; and the one-time granulation rate of the TBSI products granulated by using the method reaches over 80 percent, the average hardness is about 2N, the diameter is 2+ / -0.2 millimeters, the granules can fully meet the requirements of users, the granules are not broken in actual packing and moving processes, and by testing and measuring, the quality indexes of the granules accord with the national grade 1 product standards.

Description

technical field [0001] The present invention relates to a kind of granulation method of N-tert-butyl bis(2-benzothiazole) sulfenamide (TBSI) of rubber vulcanization accelerator, specifically, relate to a kind of accelerator TBSI granulation binder and Granulation method of TBSI. Background technique [0002] Accelerator TBSI is a general-purpose accelerator for rubber, which can be widely used in natural rubber, butadiene rubber, isoprene rubber, styrene-butadiene rubber, etc. It not only avoids the production of nitrosamines by secondary amine accelerators in the rubber vulcanization process It can replace the complex of another primary amine accelerator NS and the anti-scorch agent CTP and be used alone. It is a promising accelerator product. With the increasingly stringent requirements for environmental health management and industrial use, in order to avoid problems such as dust, powder products are increasingly replaced by granular products in the industry. Compared w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/06B01J2/28C08L21/00C08K5/47
Inventor 李树东朱军
Owner KEMAI CHEM
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