Product

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Main Product
Styrene Butadiene Rubber (SBR)
Segment
Chemicals
Main-Family
Rubbers & Elastomers
Sub-Family
Tires & Specialty Rubbers
Physical State

Solid

Product
Emulsion Styrene Butadiene Rubber
Abbreviation
E-SBR

Description

Emulsion-SBR (E-SBR) is the most  widely used rubber in the world, representing 40% of the synthetic rubber market and it is predominantly used for the production of passenger car and light truck tires, as well as truck re-treading compounds. Other applications for E-SBR Rubber include shoe soles, flooring, conveyor belts, industrial hoses, adhesives, and a broad spectrum of other rubber goods[1]. 

E-SBR is produced by Emulsion Polymerization initiated by Free Radicals. Reaction Vessels are typically charged with the two Monomers, a Free Radical Generator, and a Chain Transfer Agent such as an Alkyl Mercaptan. Radical Initiators include Potassium Persulfate and Hydroperoxides in combination with Ferrous Salts. Emulsifying Agents include various Soaps. By "capping" the growing Organic Radicals, Mercaptans (e.g. Dodecylthiol), control the Molecular Weight, and hence the Viscosity, of the Product. Typically, Polymerizations are allowed to proceed only to ca. 70%, a method called "Short Stopping". In this way, various Additives can be removed from the Polymer.[2]

References

  1. ARLANXEO, EMULSION STYRENE BUTADIEN RUBBER
  2. Wikipedia, Styrene butadiene
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Products Picture
Various Sources
  Product Communicator
Title Date
  UserPic SBR products created 10/28/2022
Identifiers
logo CAS Number
9003-55-8
logo EC Number
618-270-2
logo ECHA InfoCard
100.127.439
Chemical Data
Chemical Formula

(C8H8.C4H6)x

Molecular Weight (g/mol)
1000
Specific Gravity
0.95
Crude Data
API Gravity
17.45
Country
Product Settings
Default
Status
A
Content provided by
Transaction Name Date
Modified by UserPic   Kokel, Nicolas 3/7/2024 2:11 PM
Added by UserPic   Kokel, Nicolas 10/23/2022 6:35 PM