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What is TBC and What Absorbent to Use for Removing TBC in Rubber/Tire Production?

What is TBC ?

English name: P-tert-butylcatechol

Chinese name: tert-butylcatechol

It is a widely used polymerization inhibitor and is often used as a polymerization inhibitor for IP (isoprene).

Most synthetic rubbers on the market, such as tires, rubber gloves and other raw materials, use a material called isoprene (IP). However, because isoprene contains conjugated double bonds and has active chemical properties, it is prone to homopolymerization and copolymerization reactions. In order to prevent the reduction of this isoprene, it is usually necessary to add a polymerization inhibitor (TBC). Polymerization inhibitors generally achieve polymerization inhibition by chain transfer (disproportionation reaction) or chain termination (coupling reaction). The addition of inhibitor can reduce the loss of IP.

In traditional industries, rectification is often used to remove polymerization inhibitors in IP. However, when a large amount of IP is required in production, if only simple distillation is used, it will not only consume water, electricity, time and effort, but also affect the overall production progress. Now a more energy-saving method is to use activated alumina particles to adsorb the polymerization inhibitor (TBC) and turn it into a polymerization-grade IP, which becomes a time-saving, labor-saving and less restrictive treatment method.


Product Application Introduction:

Xintao Activated Alumina has a good adsorption effect on the polymerization inhibitor (TBC, p-tert-butylcatechol) in isoprene (IP), which belongs to static adsorption.

Some experts have done experimental research:

Take the raw IP sample containing the polymerization inhibitor TBC, add alumina particles to soak it. Samples were taken at regular intervals (0.5 h, 1 h, 3 h, 6 h, 12 h, 24 h, 48 h) for analysis, and polymerization experiments were evaluated. The aggregation effect was compared with the standard IP. The adsorption effect of alumina on polymerization inhibitor (TBC) was examined. It can be seen from Table 1 and Table 2 that the TBC content after alumina soaking is significantly reduced, or even not.


Technical Data Sheet:

ItemUnitTechnical data
Model
Activated Alumina KA100
Appearance
White, Sphere, No Odor, Insoluble In Water, Innocuous
Particle Size
7*14mesh
(1.2-2.8mm)
6*10mesh
(1.5-3.2mm)
5*8mesh
(2.5-4.0mm)
Crush Strengh≥ N/PC2540100
LOI(300-1000℃)%4-7
Bulk Densityg/ml0.7-0.8
Surface Aream2/g300-330
Pore Volumeml/g0.45-0.5
Macroporosity>750A0.13
Abration loss%≤1.0
AL2O3+promoter%93.5
Static water absorption(RH%=20%)%10
Static water absorption(RH%=60%)%20
Static water absorption(RH%=95%)%40


Cooperative customers:

Domestic: Saibaolong Petrochemical

          Wanhua Chemical Group

          Lee Chang Young Chemical

Abroad: Topglove, Malaysia


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