What vulcanization agents are used in the rubber industry?

A more recently discovered form of activation is the addition of dry zeolite. Discovered by LANXESS when zeolite was added to the curing system, originally to prevent the formation of pores that are formed upon the evaporation of vola tiles, such as water. A wide variety of vulcanization agents are used in the rubber industry.

What is SSBR / BR based silica?

For SSBR/BR-based silica compounds with a high-perfor-mance level for tire applications, the sulfur donors CLD and particularly SDT improves reversion and outperform standard curatives in terms of the heat stability of the dynamic network.

What is the elastomer content of rubber?

The average elastomer content in rubber arti-cles is approximately 50%, the remaining ingredients com -prise fillers, plasticizers, chemicals and additives. This often means that more than ten ingredients with different chemical structures, polarities and consistencies must be processed to form a homogeneous compound.

How does vulcanization affect diene rubber?

In conventional diene rubber compounds with a high amount of polysulphidic cross-links, a steady reduction in network den-sity is observed at relatively high vulcanization temperatures and/or with extended vulcanization times, this reduction thus ultimately impairing the mechanical and dynamic properties of the vulcanizates.

Does Rhein Chemie have a Permanent bladder coating line?

Rhein Chemie runs two dedicated coating lines for permanent bladder coating, one in Burzaco, Argentina, another in Little Rock, USA. Both coating lines are just one example of Rhein Chemie’s considerable investments in its bladder business.

How has Rhein Chemie invested in its bladder business?

Both coating lines are just one example of Rhein Chemie’s considerable investments in its bladder business. Other recent investments were the opening of our bladder production sites in Brazil (2013) and China (2015) or capacity increases by new presses installed also at our sites in Argentina and USA.