Video Exclusives


Inside Nexen's Changnyeong plant

Sentury

Visit the highly automated facility in South Korea, outfitted with the most advanced production technologies and systems.

Click here to watch the video


Nokian tire testing

Sentury

Indoor analysis underway at the Nokia R&D facility​

Click here to watch the video


Do you feel you spend too much time acquiring, retrieving and handling data than you do analyzing and interpreting it?

Web Exclusive Articles

« back to listing

Liquid rubber technology

Kuraray’s technical manager Marcel Gruendken discusses the advantages of liquid rubber technology in enhancing tire properties and rubber processability

 

Please tell us about the liquid rubbers developed at Kuraray.
Kuraray is a producer of specialty chemicals. The development of Kuraray’s liquid rubber (KLR) was driven by our desire to transition from solid polyisoprene (IR) to liquid polyisoprene for improved rubber properties. This development dates back to the early 1970s when the isoprene rubber market was becoming more commoditized. Kuraray launched its liquid rubber as a niche product and high value-added material.

What are the benefits of these liquid rubbers?
Kuraray’s liquid rubbers function as reactive plasticizers but have far higher molecular weight than normal plasticizers. They are co-vulcanizable and reduce migration significantly, which improves the product’s shelf life. This property is valued highly in the tire industry. While improving the processability of rubber compounding in tires, KLR enhances the performance of tires greatly by simultaneously controlling the balance of grip, fuel efficiency and wear resistance.

What are their key properties?
The material is mainly used as a structural and functional additive for high performance rubbers to meet customer needs. The key properties are molecular weight and a unique structure. This includes copolymer content, hydrogenation, and vinyl content or functionalized groups. Kuraray’s liquid rubber has a narrow molecular weight distribution which comes from our synthesizing technologies. KLR provides customers with the largest amount of possibilities for molecular designs with narrower molecular weight distribution.

Are any changes in the mixing process required?
Once Kuraray liquid rubber is in the mixing stage it is easily processed. Due to its high viscosity, it is ready packed in polyolefin pouches (e.g. 2kg), which can be poured directly into the mixer. Another option is to prepare liquid rubber in pre-heated drums to reduce the viscosity.

1 June, 2016

 

RECEIVE THE
LATEST NEWS


Your email address:



Read Latest Issue

Read Latest Issue

Read Latest Issue

Web Exclusives

Bridgestone Americas and Versalis in partnership
The two companies have revealed their plans to develop a technology package with the aim of commercializing guayule
Read Now

Yokohama launches revolutionary concept tire
Incorporating new mixing technology, the BluEarth-air EF21 is rated AAA for rolling resistance and an A for wet grip – the highest graded on the market according to the Japanese tire label
Read Now

Nokian unveils images of new Spain facility
More conceptual renderings have been released showing the layout of the new 300ha facility, currently being built south of the Spanish capital of Madrid
Read Now

Snow Academy project
Luleå University of Technology initiates project to develop methods of measuring snow quality in order to improve preparation of test tracks  
Read Now

Drivers in Europe reveal they do not change their tires to suit conditions
A study conducted by Nokian Tyres has shown that a significant amount of European motorists drive on unsuitable tires for the conditions
Read Now


Supplier Spotlight

Supplier SpotlightWe are building a list of leading suppliers covering all aspects of the tire industry. Want to see your company included? Contact olivia.campbell@ukimediaevents.com for more details.

Submit your industry opinion

Industry BlogDo you have an opinion you'd like to share with the tire technology community? We'd like to hear your views and opinions on the leading issues shaping the industry. Share your comments by sending up to 500 words to rachel.evans@ukimediaevents.com

Submit Your Recruitment Ad

Recruitment AdTo send us your recruitment advertising or to receive information on placing a banner please email olivia.campbell@ukimediaevents.com