Finorchem’s Tackifying Resins: The Science Behind Advanced Adhesion, Performance And Sustainability

Firorchem

Tackifying resins or tackifiers are versatile organic substances with low molecular weight, high glass transition temperature and a softening temperature above room temperature. They exist as solid materials, derived from certain trees or chemically synthesised. Tackifiers can be broadly classified as natural (rosin-based and terpene-based) and synthetic (C5 & C9 based aliphatic or aromatic hydrocarbon and coumarone-indene) and, finally, phenol-formaldehyde condensation resins.

Phenolic tackifiers enhance adhesion by promoting superior surface contact and intermolecular interactions with rubber substrates, ensuring high initial tack and long-term retention. Unlike general tackifiers that rely primarily on weak Van der Waals forces, phenolic resins offer exceptional cohesion, heat resistance and humidity stability, making them ideal for demanding applications. Their low loading levels minimise heat build-up, optimising processing efficiency while preserving physical, dynamic and rheological properties. Additionally, phenolic tackifiers demonstrate remarkable stability and environmental compatibility, ensuring consistent performance without compromising formulation integrity. This balance of adhesion strength, thermal durability and sustainability makes them a preferred choice in rubber compounding.

Para-tertiary octyl phenol formaldehyde (PTOP) resin is a high-performance phenol-formaldehyde resin, widely utilised in rubber applications, coatings and adhesives as an industrial tackifier. PTOP resins are preferred tackifiers due to their ideal molecular weight, polarity and superior compatibility with rubber matrices, ensuring strong adhesion through hydrophobic interactions. Their octyl chain length facilitates optimal softening, enhancing wetting, green strength and cohesion.

The effectiveness of these resins is influenced by fillers that reduce tack, while PTOP enhances tack through improved interfacial bonding. Excessive oil incorporation can diminish tack by disrupting resin-rubber interactions. Balancing superior adhesion, thermal stability and process efficiency, PTOP resins remain indispensable in demanding industrial formulations.

Finorchem offers a diverse range of high-performance tackifying resins, catering to various rubber applications. Finorchem’s commitment to innovation and sustainability ensures a superior range of tackifying resins, tailored to meet the evolving demands of rubber compounding and industrial applications. Through precisely engineered formulations, Finorchem delivers exceptional adhesion performance, green tack enhancement and process optimisation, offering a strategic advantage in manufacturing. From PTOP-based FINOREX series to sustainable terpene and wood rosin resins, each solution reflects a dedication to quality, efficiency and environmental responsibility.

For naturally obtained sustainable tackifying solutions, Finorchem provides COLOFIN NS, a modified wood rosin resin in pastille form, and CP-90, a terpene-phenol-based resin derived from pine tree. Colofin NS enhances rubber processing efficiency with free-flowing, non-sticky pastilles, minimising manual handling, cracking, enabling automated weighing and serving as a sustainable tackifier alternative to rosin and synthetic options. These resins also enhance green tack, filler incorporation and stock flow, making them cost-effective choices for rubber products like tyres, hoses, belts, footwear, flooring and moulded goods.

FINOREX 1068 & FINOREX 1068H, based on PTOP novalac resins, deliver exceptional tack properties with high initial tack and longer tack retention, particularly in synthetic rubber formulations. The difference between the two lies in their softening points, allowing flexibility in application.

Additionally, FINOREX KR 140 & FINOREX TR 140, developed with para- tertiary butyl phenol & aldehyde-based novalac chemistry, offer superior tack performance under severe environmental conditions, outperforming PTOP-based tackifying resins. Their high softening point ensures sustained tack retention, making them ideal for ENR (Epoxidized Natural Rubber) compounds with high silica content and rubber cushion formulations requiring durability under severe loading conditions.

By integrating cutting-edge tackifying technologies, Finorchem strengthens the durability and reliability of rubber articles under challenging conditions, making them an indispensable partner in high-performance applications. As industries seek sustainable, high-impact solutions, Finorchem remains at the forefront – bridging advanced science with industrial excellence, shaping the future of rubber adhesion. The dedicated chemists and scientists at Finorchem’s state-of-the-art Technology Innovation Centre – featuring an NABL-accredited Chemical Synthesis Lab, Analytical Development Lab and Rubber Application Centre – continue to drive advancements, shaping better prospects for the future.

Author: Tamsuk Goswami – Senior Manager, Product Management & Marketing at FInorchem.

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GPSNR Launches Sustainable Rubber Assurance System

GPSNR Launches Sustainable Rubber Assurance System

The Global Platform for Sustainable Natural Rubber (GPSNR) has introduced its new Assurance System, a significant milestone in advancing sustainability across the natural rubber supply chain. Developed through extensive collaboration among GPSNR's Singapore-based members – including smallholders, producers, traders, tyre makers, automakers and NGOs – the system aims to tackle critical issues like deforestation, biodiversity decline, labour rights violations and human rights concerns.

The framework enables companies to align with GPSNR’s sustainability standards, evaluate supply chain risks, undergo independent verification and disclose progress transparently. A key innovation is its risk-based approach, which adjusts oversight based on the severity of environmental or social risks in specific regions or operations, optimising resource allocation. GPSNR also provides tailored tools and guidance to help members implement the system effectively, fostering accountability and improved practices industry-wide.

Stefano Savi, CEO, GPSNR, said, “This is more than a milestone for GPSNR. It is a pivotal moment for the entire natural rubber industry. With our organisational design finalised and both Shared Investment and Risk-Based Assurance in place, we’re ready to move into implementation. I look forward to the impact this will have on smallholder livelihoods, the environment and supply chain resilience.”

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Giti Tire Unveils Prototype With 93 Percent Sustainable Materials, Targets 2030 Mass Production

Giti Tire Unveils Prototype With 93 Percent Sustainable Materials, Targets 2030 Mass Production

Giti Tire has developed a concept tyre made with 93 percent sustainable materials as the Singapore-headquartered manufacturer accelerates efforts to commercialise greener products by the end of the decade.

The prototype combines 53 percent renewable ingredients such as deforestation-free natural rubber, pine-based resin and silica derived from rice husks with 40 percent recycled materials including rubber, carbon black, steel and polyester fibres from plastic bottles.

“For Giti, this stands as both a milestone and a promise—a testament to the possibilities when scientific ingenuity encompasses environmental stewardship,” said Gao Qiang Sheng, R&D General Manager at Giti Tire. “The Giti team will continue pioneering sustainable ways to improve products while maintaining our signature balance of performance and safety in order to deliver driving enjoyment for all drivers.”

Giti said the tyre achieved a technical readiness score of 9 out of 10, underscoring the viability of its eco-friendly compounds in high-performance applications. Bio-based polymers, next-generation manufacturing techniques and advanced recycling processes all contributed to the breakthrough prototype.

The company is aiming to begin mass production of the material platform by 2030 as part of a broader push to reduce reliance on petrochemicals and lower carbon emissions across its supply chain.

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ARLANXEO Launches Sustainable Rubber Portfolio in India as Demand for Green Materials Grows

ARLANXEO Launches Sustainable Rubber Portfolio in India as Demand for Green Materials Grows

ARLANXEO has launched its ISCC PLUS-certified Keltan Eco rubber grades in India, responding to rising demand for sustainable materials in the world’s most populous nation.

The German-based performance elastomers manufacturer unveiled the portfolio through technical seminars and workshops, targeting automotive components, wires and cables applications where customers increasingly value environmental credentials.

The Keltan Eco range comprises Eco-B and Eco-BC grades derived from bio-based and bio-circular feedstocks, respectively, whilst maintaining identical physical and mechanical properties to conventional fossil fuel-based products. The materials offer resistance to oxygen, ozone, heat and radiation.

ARLANXEO employs a mass balance approach for certification, ensuring the volume of Eco-labelled products corresponds with sustainable source feedstock volumes. This methodology provides supply chain transparency and enables customers to verify sustainability claims in downstream applications.

“This new portfolio will help our customers seize sustainable growth opportunities in India and stay ahead amid industry transformation,” said Rupesh Shah, ARLANXEO India’s Managing Director and Regional Sales Head.

The company also showcased its Therban hydrogenated nitrile butadiene rubber speciality grades during the events, targeting original equipment manufacturers and component producers. Therban applications include air conditioning seals, timing belts, high-temperature gaskets for oil platforms and spacecraft components.

ARLANXEO operates as one of the world’s largest synthetic rubber producers with more than 10 production sites across eight countries and four research and development locations globally. The company serves automotive, tyre, electrical, construction and oil and gas sectors.

The Indian launch forms part of ARLANXEO’s broader strategy to expand sustainable product offerings across key growth markets. Additional ISCC PLUS-certified synthetic rubber grades will be introduced in India following the initial rollout.

India’s steady rubber consumption growth, driven by the automotive and infrastructure sectors, signals a significant opportunity for speciality chemical producers aiming for sustained market expansion. ARLANXEO is well-positioned to meet this demand, marking a decisive step toward a greener, more innovative rubber industry in India.

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Rathi Group Marks Major Milestone With First Export Of ISCC-Certified Pyrolysis Oil

Rathi Group Marks Major Milestone With First Export Of ISCC-Certified Pyrolysis Oil

Rathi Group, a leader in pyrolysis and end-of-life tyre (ELT) recycling, has achieved a significant milestone with its first export shipment of ISCC PLUS-certified pyrolysis oil. With over 12 years of industry expertise, the company continues to set benchmarks in sustainable recycling, innovation and circular economy practices.

This landmark export highlights Rathi Group’s ability to supply globally recognised, eco-friendly alternatives to conventional fossil fuels. The company’s integrated operations – spanning ELT shredding, continuous pyrolysis, carbon black recovery and oil distillation – adhere to stringent international sustainability standards.

The ISCC PLUS certification underscores Rathi Group’s commitment to environmental responsibility, supply chain transparency and climate-conscious solutions. The accomplishment reflects the efforts of its dedicated team and partners, reinforcing the company’s mission to drive impactful change in sustainable tyre recycling.

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