Intratec Chemical Process Library is the first free online encyclopedia of chemical process technologies. Our Library covers not only processes description themselves, but also the economics surrounding chemicals production, providing real-world knowledge on the production of several chemical commodities. Click here to check all chemicals covered.
In this page you will find free data about Styrene Butadiene Rubber (SBR), including:
- What is SBR
- How to make SBR
- SBR uses and applications
This page presents brief synopsis of Methanol production technology, describing, in a concise way, relevant technical and economic aspects. Each manufacturing process description will consist of:
- Major process steps
- Simplified, schematic flow diagram & key equipment
- Important safety or environmental considerations
- Economic perspective, comprising capital expenditures and/or operating expenses
All content from Intratec's Chemical Process Library was produced based on reports published by Intratec. To learn more about SBR production processes presented below and others examined in Intratec reports, click here.
Styrene Butadiene Rubber via an Emulsion Process
Styrene Butadiene Rubber is an elastomer that was originally developed prior to World War II as a replacement for natural rubber. SBR is used for manufacturing vehicle tires, but is also used in other applications, such as: adhesives, flow modifiers for other elastomers, footwear, pharmaceutical and food-contact articles, and even chewing gums.
The following paragraphs describe a cold emulsion-polymerization process for SBR production from butadiene and styrene. SBR grades generated in this type of process are usually referred to as emulsion SBR (eSBR).
Styrene and butadiene are mixed with an emulsifier and demineralized water to form the emulsion that will be fed to the polymerization reactors. The polymerization occurs in a connected series of continuously stirred, jacketed tank reactors. To maintain a low reaction temperature, all reactors are cooled using ammonia refrigeration.
Downstream, a “shortstop” agent is mixed with the emulsion to stop the reaction at the desired conversion stage and avoid gel formation. The shortstopped latex is transferred to the monomer-recovery section.
The latex generated in the polymerization reactors is ...
Coagulation, Drying and Finishing
In the coagulation step, the latex coagulates and becomes ...