November 03, 2022

Excellent starting resin for flexible TPO compounds: New soft random heterophasic PP

As an industry leader in innovative polyolefins-based solutions, Borealis offers a broad portfolio of products for the compounding and polymer modification industries.

As an industry leader in innovative polyolefins-based solutions, Borealis offers a broad portfolio of products for the compounding and polymer modification industries. These include polyethylene (PE) resins in the high density polyethylene (HDPE), linear low density polyethylene (LLDPE), and low density polyethylene (LDPE) families; polypropylene (PP) resins, including homopolymer, random, and heterophasic; and speciality products such as Queo™ as well as other plastomers and elastomers.

One type of PP, random heterophasic copolymers, is especially suited for the manufacture of flexible applications requiring high thermal stability and low flexural modulus. A new member of this Borealis family of soft PP materials is SB330CF, a soft random heterophasic PP that serves as an ideal component for thermoplastic olefin (TPO) compounds used to produce membranes, such as those used in roofing, waterproofing, and the automotive sector.

The new SB330CF fills a market gap by enabling more flexible tailoring of TPOs to meet specific application requirements. Compared to conventional PP materials, using SB330CF requires less polymer modifier to reach the flexural modulus values necessary for flexible membranes.

Below a summary of the benefits of using Borealis soft PP materials such as SB330CF:

  • Offer flexural modulus range from 500 to 330 MPa, and an MFR from 0.8 to 7 g/10 min. (230°C/2.16 kg)
  • Enable benchmark TPO production for automotive and construction industries, among others
  • Outstanding low temperature behaviour combined with high heat resistance
  • Excellent starting resins for flexible TPO compounds used for flexible membranes
  • Provides customers with an attractive alternative when sourcing soft PP

“Up until recently, there have been few options when it comes to sourcing flexible and soft PP materials,” says Edwin Verdurmen, Borealis Application Marketing Manager. “We were pleased to be able to present this viable alternative to our customers and partners in person at the K 2022 earlier in October and are also looking forward to presenting it at the upcoming AMI conference Waterproof Membranes 2022.”

AMI Waterproof Membranes will take place from 7 to 9 November 2022 in Cologne, Germany.


About Borealis
Borealis is one of the world’s leading providers of advanced and sustainable polyolefin solutions and a European front-runner in polyolefins recycling. In Europe, we are a market leader in base chemicals and fertilizers. We leverage our polymer expertise and decades of experience to offer value adding, innovative and circular material solutions for key industries such as consumer products, energy, healthcare, infrastructure and mobility.In re-inventing essentials for sustainable living, we build on our commitment to safety, our people, innovation and technology, and performance excellence. We are accelerating the transformation to a circular economy of polyolefins and expanding our geographical footprint to better serve our customers around the globe.With head offices in Vienna, Austria, we employ 6,900 employees and operate in over 120 countries. In 2021, we generated total sales of EUR 12.342 EUR billion and a net profit of EUR 1,396 million. OMV, the Austria-based international oil and gas company, owns 75% of our shares, while the remaining 25% is owned by a holding company of the Abu-Dhabi based Mubadala. We supply services and products to customers around the globe through Borealis and two important joint ventures: Borouge (with the Abu Dhabi National Oil Company, or ADNOC, based in UAE); and Baystar™(with TotalEnergies, based in the US).

Borealis Polymer Modifiers: Small additions, great effect
As a leading provider of innovative solutions in the fields of polyolefins, Borealis continues to develop its portfolio of proprietary technologies and products. With strong roots in Polyolefins, the Borealis portfolio offers a broad range of products for polymer modification industries; from PE (HDPE, LLDPE, LDPE) and PP (homo-PP, random-PP and heterophasic-PP) resins to specialties like Queo™ Plastomers & Elastomers, EVA and soft heterophasic PP’s. Borealis offers a broad toolbox of materials; from very stiff to extremely flexible, allowing a broad range of applications. Furthermore, Borealis can provide many of these materials as circular and bio-circular solutions. Combining application expertise and leading technologies with a team dedicated to the compounding and polymer modification industry, Borealis offers solutions designed for the best performance in end-use applications. Our dedication to Value Creation through Innovation in all applications is proven through the constant development and expansion of our portfolio. Ongoing innovation is crucial to maintaining partnerships that yield long-term success for both Borealis and our customers.


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