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Polybutadiene rubber for plastic modification


Today's commercial high-impact polystyrene resins are made by polymerization of styrene in the presence of an unsaturated rubber, generally polybutadiene, in a solution or mass-suspension process. Such polybutadiene is Buna CB.
The use of organo-metallic catalysts in the production of Buna CB leads to highly uniform polymers which are particularly suited for this application.



The rubber-in-styrene graft polymerization of Buna CB results in superior products compared with those produced by mechanical blending.




NamePlantSV (5,43% in toluene)ML 1+4TDSMSDS
Buna CB 55 GPCabo16853TDSMSDS
Buna CB 55 GPTCabo16552,5TDSMSDS
Buna CB 70 GPTCabo25069.5TDSMSDS
Buna CB 528 TPt. Jérôme15953TDSMSDS
Buna CB 528 SIPt. Jérôme15953TDSMSDS
Buna CB 529 TPt. Jérôme17055TDSMSDS
Buna CB 530 TPt. Jérôme25068TDSMSDS
Buna CB 550 SIPt. Jérôme16354TDSMSDS
Buna CB 550 TPt. Jérôme16354TDSMSDS
Buna CB 565 TPt. Jérôme4460TDSMSDS
Buna CB 380Orange9038TDSMSDS
Buna CB 550Orange16354TDSMSDS
Buna CB 550 TOrange16853TDSMSDS
Buna CB 710Orange26571TDS 

In addtion to the common Lithium polybutadiene rubbers, LANXESS offers a range of high-cis Neodymium polybutadiene rubbers for plastic modification which offer improved properties of the final products.


Namecis (%)SV (5,43% in toluene)ML 1+4TDSMSDS
Buna CB 728 Tmin 9616044TDSMSDS
Buna CB KA 8967min 9630063TDSMSDS


Key Properties

- completely soluble in styrene
- high purity and light color
- extremely low gel content
- compliance with FDA regulations
- solution viscosity with tight tolerance limits


Food contact

Information concerning FDA and BfR compliance can be obtained on request from the Health, Safety, Environment and Quality Department (HSEQ) of Lanxess.

_Data Sheets_Buna CB for plastic modification