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Dow ‘reinvents’ polyethylene
Researchers at Dow have developed a groundbreaking polymerization technique, revolutionizing the production of polyethylene. This innovative process enables the controlled synthesis of long-chain branched polymers, a feat previously unattainable under traditional methods.
Published in Science, their work unveils a polyethylene variant boasting an unprecedented long-chain architecture akin to LLDPE. Crucially, this achievement is made possible through a novel catalyst, characterized as dual-chain, which orchestrates the simultaneous assembly of two polymer chains on a single metal center. By incorporating a small amount of diene alongside ethylene, this catalyst facilitates the creation of ladder-like branching structures. Banning plastic bottles
The implications of this breakthrough are profound. Not only does it pave the way for industrial-scale production of controlled long-chain branched polyethylene, but it also offers comparable rheological properties to LDPE or its blends with linear polyethylene at low density.
Moreover, this advancement promises enhanced resource efficiency and potential reductions in the carbon footprint of polymer manufacturing on an industrial scale. The versatility of this new polyethylene variant holds promise for various applications, including packaging, infrastructure, consumer goods, transportation, and healthcare.
Dave Parrillo, Vice President of Research & Development at Dow, highlights the transformative impact of this innovation, emphasizing its role in creating lower-carbon, circular, and safer products across diverse sectors. Banning plastic bottles
Led by Robert Froese and supported by a team of scientists from Dow laboratories in Texas, Michigan, and Holland, this research marks a significant milestone in polymer science and industrial innovation.
The Nova Institute projects robust growth at 17% annually for bio-based polymers from 2023 to 2028, propelled by heightened demand from Asia and the USA
However, Europe trails in this sector. PLA capacities surged nearly 50% in 2023, alongside steady growth in polyamide and epoxy resin production. Expansion of 100% bio-based PE capacities occurred, with PE and PP from bio-based naphtha gaining ground. PHA expansions are in the pipeline. Despite promising growth, bio-based polymers only represent 1% of fossil-based polymer production, but their compound annual growth rate (CAGR) of 17% far exceeds the overall polymer market’s 2-3% growth, a trend expected until 2028. Banning plastic bottles
Some global brands are diversifying their raw material sources to include renewable options like CO2 and biomass, driving demand for bio-based and biodegradable polymers. However, political support, particularly lacking in Europe, hampers progress, unlike in Asia and the USA where supportive legislation boosts demand.
In 2023, Asia leads globally with 55% of installed bio-based polymer capacities, followed by North America (19%) and South America (13%). Europe’s share dwindled to 13%, largely due to reliance on mass balance and free allocation methods. Asia is poised for significant growth, expecting a 35% CAGR from 2023 to 2028, driven by PA, PHA, and PLA expansions. Banning plastic bottles
For those in the coatings industry, understanding water-based acrylic dispersions is crucial. “Water-based Acrylic Dispersions” offers comprehensive insights into binders, systems, and testing methods, catering to beginners, specialists, students, and experts seeking deeper knowledge in this field.
Sabic introduces LNP Elcres SLX1271SR, a PC-based grade in the LNP SLX family offering scratch and UV resistance
Tailored for automotive exterior components, this polycarbonate copolymer doesn’t require painting, cutting costs and environmental impacts associated with VOC release.
A finalist in the 2024 Edison Best New Product Awards, LNP Elcres SLX1271SR boasts resistance to atmospheric agents, UV stability, and solid mechanical performance. It promises long-lasting brilliance without the need for repainting. Banning plastic bottles
Manufactured with a glossy finish, this copolymer rivals traditional painted polycarbonate or PC/ABS alloys in aesthetics and durability. It passes washing tests with flying colors, retaining gloss and scratch resistance akin to painted polymers.
Sabic’s comparisons with PMMA-based materials highlight SLX1271SR’s superior mechanical performance, color depth, and heat resistance (120°C). It’s ideal for exterior car parts like spoilers, grilles, and mirror housings, as well as electronic and computer housings. Banning plastic bottles
Thanks to a self-protective layer that continuously absorbs UV light, SLX1271SR maintains its appearance for over a decade. Sabic’s innovation not only meets but exceeds industry standards, offering a game-changing solution for automotive and electronics applications.