Process for treating dregs, treated dregs, use thereof, process for vulcanizing rubber, and vulcanized rubber
AssigneeOxitec ParticipaçãO E GestãO De Ativos NãO Financeiros Ltda.
InventorSandro Antônio Scodro
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Abstract
Provided herein is a process for treating dregs for the application thereof as vulcanization activator of rubbers, putting an end to this residue generated in the cellulose industry and providing vulcanized rubbers with similar or enhanced properties in relation to those already known. The process for treating dregs includes the steps of: (a) drying the dregs; and (b) micronization of the dry dregs to an average particle size (d50) from 2 to 45 micrometers. Further provided herein are treated dregs, a use of treated dregs as vulcanization activator, and a process for vulcanizing rubber and the vulcanized rubber.
Claims11
A rubber vulcanization process, comprising the step of adding a vulcanization activator to the rubber to be vulcanized, wherein the vulcanization activator is treated dregs that comprise an average particle size (d50) from 2 to 45 micrometers, and comprise, in % by mass based on the treated dregs:
- Loss on Ignition (LOI):
- 35 to 45;
- SiO2:
- 0.5 to 2.0;
- Al2O3:
- 0.5 to 1.5;
- Fe2O3:
- 0.5 to 1.5;
- TiO2:
- 0.0 to 1.0;
- CaO:
- 35 to 50;
- MgO:
- 2 to 20;
- K2O:
- 0.0 to 1.0;
- Na2O:
- 0.5 to 5.0;
- P2O5:
- 0.2 to 1.5;
- BaO:
- 0.0 to 0.2;
- SrO:
- 0.0 to 0.5;
- MnO:
- 0.1 to 2.0;
- and
- SO3:
- 0.5 to 5.0.
Dependencies are inferred from the claim text.