Video Exclusives


Inside Arctic Falls' Indoor Flex facility

Sentury

Raw footage taken in the new test hall at the Swedish proving ground, scheduled to open later this month

Click here to watch the video


Michelin launches recycling campaign

Sentury

The French tire maker has unveiled its ambitious future recycling strategy to ensure that by 2048, all of its tires are manufactured using 80% sustainable materials, and 100% of all end-of-life tires are recycled.

Click here to watch the video


A glimpse at Nokian's new test facility

Sentury

A rendering of the tire maker's new technology center in Spain shows what the facility will look like when it is complete in 2019. Find out more in the March 2018 issue (p60) of TTI

Click here to watch the video


In what year did Bridgestone officially launch its first run-flat tire?

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

Arctic Falls' Indoor Flex facility now operational
The grand opening of Arctic Falls' new Indoor Flex facility, which will offer new tire and vehicle testing possibilities, is scheduled for the end of June.
Read Now

ETRMA consolidates used tire management data for 2016
Data gathered by the ETRMA from 32 countries in the EU shows that 94% of used tires in 2016 were collected and treated
Read Now

BKT in R&D tie-up with Kultevat
Indian tire giant BKT has entered into a research and development partnership with US biotechnology firm Kultevat to further the use of TKS rubber as a substitute for natural rubber
Read Now

Completely truckworthy
Bridgestone America's director for commercial tire development, Mitchel Kritzell, gives an update on the SuperTruck II program
Read Now

Q&A: Sam Visaisouk, CEO, Tyromer
The Retread Tire Association (RTA) speaks with Tyromer CEO, Sam Visaisouk, about the testing of its new tire-derived polymer recycled rubber product in truck and passenger car tires
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