Video Exclusives


Historical footage from Marangoni

Sentury

The Italian supplier looks back on its beginnings as a developer of tire production and retreading machinery.

Click here to watch the video


A factory tour

Sentury

Visit Continental's factory in Otrokovice where more than 21 million passenger and light freight tires are produced a year

Click here to watch the video

What do you think about Michelin's Vision tire concept? Video here.

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

 

Read Latest Issue

Read Latest Issue

Read Latest Issue

Web Exclusives

Winter warmer
In response to strong demand from its tire industry customers, Artic Falls plans to undertake an expansion of its indoor hall
Read Now

Q&A with Jeff Barna, Yokohama
The newly appointed COO discusses key trends and challenges – including his plans for the company, raw material prices, and expansion plans in the USA
Read Now

Conti celebrates 50th anniversary of the Contidrom
The German tire giant looks back on 50 years of history at its flagship test facility
Read Now

Interview: Giuliano Menassi, head of R&D, Pirelli
The R&D expert discusses how the latest technology trends are affecting the way in which R&D is conducted at Pirelli
Read Now

In it to win it
Dunlop, which is now in its second year of competition with Aston Martin in WEC, says a new regulation will enable greater transfer from track to road
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.

فروشگاه اینترنتی فروشگاه اینترنتی سیستم همکاری در فروش کانال تلگرام چت روم دانلود فیلم فروشگظ;ه اینترنتی

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