Tosaf Introducing an ATO-Free, Cost-Effective Alternative with Stable Supply

Tosaf has announced an alternative to chlorine- or bromine-based flamer retardants. The halogen-free grades enable sustainable solutions to fill customer requirements and legal specifications. FR8719PP is specifically designed to meet the flame-retardant requirements of polypropylene in injection molding and extrusion applications.

According to Tosaf, FR8719PP helps to prevent the spread of fire and meet stringent fire safety criteria in applications such as construction, automotive and shipping packaging without compromising the properties of the material. PP pipes, for example, retain their high impact strength, dimensional stability and chemical resistance without restriction after switching to halogen-free flame retardants. In contrast to many halogen-based flame retardants, FR8719 shows no long-term migration of the active ingredients, and corresponding PP products offer significantly higher UV resistance.

Dispersion of FR8719PP in injection-molded and extruded PP-based products enables a relatively low dosage and therefore the mechanical properties to be largely retained, but also uniform flame retardance across the entire product. In addition, the low potential for die buildup offers a processing advantage over other halogen-free solutions available on the market. 

The choice of flame retardant depends on which UL94 classification is to be achieved. For example, to fulfill the requirements of class V-2, flame retardants in low concentrations are sufficient to eliminate the free radicals formed by the heat of combustion and thus suppress the fire. Only in higher concentrations do they also prevent burning droplets, as required by the UL94 V-0 classification.

Tosaf has developed a portfolio of halogen-free flame retardant grades that differ from each other in their flame retardant systems and fulfill individual priorities to achieve the optimum balance between effect and concentration. Their dosage is between 3% and 10%, and depends on the desired classification, type and melt flow index of the PP, thickness of the part and the simultaneous presence of other additives. In contrast, intumescent halogen-free flame retardants require a dose of over 20% to achieve similar performance.

source:Tosaf/ Plastics Technology (PT)

Clariant launches innovative PFAS-free polymer processing aids for more sustainable polyolefin extrusion

Getting ready for the K’ 2025 trade fair in Duesseldorf, #Clariant today announced the launch of its new AddWorks PPA product line, a new generation of PFAS-free #polymerprocessingaids designed specifically for polyolefin extrusion applications. This innovative solution addresses the industry's growing need for more sustainable alternatives to conventional fluoropolymer-based processing aids while maintaining strong performance standards.

The new range includes AddWorks PPA 101 FG, primarily focused on EMEA, Americas, and SEAP markets, and AddWorks PPA 122 G, targeted for Greater China and SEAP regions. Both products are readily commercially available, offering manufacturers a timely solution as regulatory restrictions on PFAS substances continue to tighten worldwide.

"Our new AddWorks PPA product line represents a significant breakthrough in sustainable polymer processing," said Diederik Goyvaerts, Global Business Development Manager for Polymer Solutions at Clariant. "By developing PFAS-free alternatives that match or exceed the performance of traditional processing aids, we're helping our customers stay ahead of regulatory changes while maintaining the high-quality standards their end-users expect.

The innovative formulations are completely free of per- and polyfluoroalkyl substances (PFAS), as well as inorganic, silicone, or polysiloxane materials. This composition ensures broad regulatory compliance, including suitability for food contact and food packaging applications, addressing a critical need in the packaging industry. Additionally, these PFAS-free solutions support recyclability requirements under the upcoming EU Packaging and Packaging Waste Regulation (PPWR), further aligning with the industry's sustainability objectives.

Manufacturers using the new AddWorks PPA solutions can expect significant processing improvements, including enhanced extrusion efficiency, effective elimination of shark skin defects, and superior film surface smoothness.

AddWorks PPA 101 FG features a 100% active fine grain composition that can be easily incorporated via host resin, masterbatch, or concentrate. Meanwhile, AddWorks PPA 122 G comes in a convenient masterbatch form for easy handling, requiring the same dosing level as traditional polymer processing aid masterbatches, simplifying the transition for manufacturers.

The versatility of these new processing aids makes them ideal for a wide range of applications, including polyethylene blown and cast film extrusion processes commonly used in packaging, agriculture, and building & construction industries. Film converters will particularly benefit from the improved surface quality and processing efficiency these additives provide.

source: Clariant

Today's KNOWLEDGE Share : The best accidental discoveries in polymer chemistry (Charles Goodyear)

Today's KNOWLEDGE Share

The Accidental Alchemy of Charles Goodyear

In the mid-19th century, rubber was known as a temperamental material. While waterproof and elastic, it had a significant flaw it became sticky and brittle in hot weather and hard and inflexible in the cold.

Around this time, American inventor Charles Goodyear was determined to pursue a peculiar idea. He was convinced that he could improve the properties of natural rubber to make it more versatile and suitable for a broader range of applications.

His first major development was a nitric acid treatment that reduced rubber’s adhesiveness; however, it did not hold up well in high temperatures. He then teamed up with and later purchased the process of Nathaniel M. Hayward, a former rubber factory employee, who found that a sulfur treatment similarly reduced the stickiness of the material.

Legend has it that, while experimenting one day in 1839, Goodyear accidentally spilled a mixture of rubber and sulfur onto a hot stove. To his surprise, the rubber concoction charred and hardened instead of turning into a gooey mess. This transformative accident would soon lead to the commercial production of vulcanized rubber.

Vulcanized Rubber Gains Traction

After several more years of experimentation, Goodyear finally perfected and patented his vulcanization process in 1844, which he named after the Roman god of fire, Vulcan. Around this time, he also created the ​​Naugatuck India-Rubber Company in Connecticut, which became a leading site of rubber manufacturing in the following centuries.

To the misfortune of Goodyear, he spent many years fighting patent infringements from local and international competitors who saw the immense value in the process, leaving him penniless at the time of his death. However, in 1898, two brothers named their tire company after the inventor to honor his work in making their products possible.

Modern Production and Uses of Vulcanized Rubber

Today, vulcanization is commonly used to enhance both natural and synthetic rubber. It is a chemical process that involves heating the rubber with a curing agent such as sulfur or peroxide, creating a material that retains the desirable properties while preventing temperature-induced defects. This results in a more stable, durable, and versatile product resistant to aging, swelling, and abrasion.

Some of the most common applications of vulcanized rubber are:

1. Vehicle Tires: Vulcanized rubber has found its calling in the automotive industry. Tires from this material provide a smooth and reliable grip on various road surfaces and are resistant to damage and wear.

2. Footwear Innovation: The invention of vulcanized rubber transformed the shoe industry. Rubber soles, with their excellent grip and durability, have become a standard feature in a wide range of footwear, from athletic shoes to every day sneakers.

3. Industrial Applications: The resilience of vulcanized rubber makes it indispensable in various industrial applications, from conveyor belts to hoses, gaskets, and seals. Its resistance to chemicals and abrasion makes it an ideal material for machinery and equipment.

4. Rain Clothes: Raincoats and boots owe their impermeability to vulcanized rubber. The material’s waterproof nature makes it the perfect choice for outerwear and footwear that withstand the elements.

5. Sports Balls: Vulcanized rubber has made its mark on sports equipment, especially in the show’s main stars. Soccer, volley, tennis, bowling, basketball, lacrosse, golf, medicine, foot, base, and nearly every type of bouncy ball you can think of has been made of rubber. Its flexibility and resilience are key for lasting through a game.

6. Medical Advancements: The medical field has benefited from vulcanized rubber. It is used in various medical devices, including gloves and certain types of tubing, owing to its hypoallergenic properties and chemical resistance.

The serendipity of Charles Goodyear’s kitchen mishap left an undeniable mark on society. The grip of our shoes, the comfort of our tires, and the durability of our equipment are all due to the transformative power of vulcanized rubber. It’s a testament to the idea that the most revolutionary inventions can sometimes emerge from the most unexpected and sticky situations.

source:Custom Powder Systems

Plastic Contract Manufacturing Assignment for Market Research Company

Plastic Contract Manufacturing

 I have completed an assignment on PLASTIC CONTRACT MANUFACTURING MARKET OVERVIEW for a well-reputed market research company and shared my insights on current existing models that have been in practice in Europe and North American markets. And also shared my inputs on the top industries and their market share and EBIT margin % respectively. Mostly listed out products that have been complex to manufacture in various applications.

I have covered an overview of the Plastic Contract Manufacturing Market for various products such as Injection molding, extrusion, Blow molding, thermoforming etc,. mostly covered Europe and North American market. Finally given the comparison over the two markets on various plastic products. Overall my client was satisfied with the inputs that I have shared with them.

#polymer #contractmanufacturing #marketresearch #europe #northamerica #automotive #consumerelectronics #medical #industrial #construction

SYENSQO AND TERMA SIGN STRATEGIC AGREEMENT TO ADVANCE AEROSPACE AND DEFENCE COMPOSITES

 In a move set to accelerate innovation in aerospace and defence, Syensqo, a global leader in advanced materials, and Terma, a trusted name in mission-critical aerospace and security systems, have signed a strategic collaboration agreement aimed at expanding scientific and technical progress in high-performance composites.

The agreement marks a formal commitment between the two companies to establish a growth framework that harnesses their combined expertise, R&D capabilities, and resources to drive next-generation composite materials for some of the most demanding aerospace and defence environments.

 

“We are excited to join forces with Terma,” said Marc Doyle, Business Executive Vice-President of Syensqo Composite Materials. “This partnership reflects our shared commitment to scientific advancement and delivering innovative composite solutions for the future of aerospace and defence.

 

The partnership will leverage Syensqo’s Heanor Application Center and its global network of testing and qualification laboratories. The focus will be on integrating Syensqo’s advanced adhesives, composites, and specialty polymer materials into Terma’s systems, enhancing durability, performance, and reliability in extreme operational conditions.

 

For Terma, the collaboration brings a wealth of material science innovation to complement its established design and manufacturing pedigree. “This is an exciting opportunity to fuse Syensqo’s world-class material technologies with Terma’s integrated product development expertise,” said Jesper Böhnke, Executive Vice President, Integrated Product Development at Terma. “Together, we aim to push the boundaries of composite development and provide cutting-edge solutions tailored to the evolving needs of our defence and aerospace customers.

 

The agreement underscores a growing trend of strategic partnerships within the aerospace sector, where materials innovation is critical to improving performance, reducing weight, and ensuring mission readiness in increasingly complex operational theatres.

source : Syensqo/World Air News

Today's KNOWLEDGE Share :How Polymer blends get unique properties

Today's KNOWLEDGE Share

Ever wonder how polymer blends get their unique properties?

It all starts with the fundamental thermodynamics dictated truth that most polymers are immiscible – they simply don't mix, with rare exceptions like PMMA/PVDF.

In these immiscible blends, the continuous phase often determines the material's thermo-mechanical, chemical, and even aesthetic properties.
The dispersed phase acts more like a filler.

But how do you predict which polymer will form that continuous phase?

It's not just about which polymer is present in a larger volume!
Viscosity is a critical factor.
A lower viscosity polymer tends to become the continuous phase.

Take a 60/40 PC/PBT blend, for instance: if the PBT is a high-flow lubricant (to the PC phase), its lower viscosity can make it the continuous phase, even if it's the minority component.

Key considerations:
- Ensure your blend ratios are expressed by volume, weight ratio at room T would be misleading.
- Volume ratios are only meaningful here at processing temperatures, since PBT, a crystalline polymer, will shrink 3X more than PC when solidifying!
- Compatibilizers are crucial for controlling the fineness of the dispersed structure.

Of course high shear in Injection Molding will modify the blend morphology, sometimes to the point of phase inversion, if one component is way more shear-thinning than the other for instance.

Hydrodynamic forces in the flow will always push the low viscosity component towards the outer layers of the flow (minimum total energy).
This can sometime lead to delamination failure of the molded part, a well known issue when molding Xenoy in automotive bumpers.

The dispersed phase will also depart from spherical inclusion shape and possibly show very elongated morphologies, especially in the “frozen skin”.

The very unique “co-continuous” morphology is very difficult to obtain reliably in Injection Molding because of processing effects mentioned above.

Note also that in all immiscible blends, a small fraction of each polymer is miscible with the other one, which can be studied in a phase diagram.
For entropic reasons, lower molecular weight grades are always more miscible than higher molecular weight grades.
So in a given blend, the short chains in the distributions are responsible for the partial miscibility observed, contributing to the structural integrity of the blends and a small shift to the two glass transition temperatures..

source : Vito leo

#polymers #polymerblends  #mixturemorphology

Today's KNOWLEDGE Share : HISTORY OF NYLON STOCKINGS

Today's KNOWLEDGE Share

When Nylons Came to Town

It took about 10 years for DuPont to turn the invention of polyamide into nylon stockings for the consumer market, but boy did it pay off.

When the first nylon stockings, made from a material invented by DuPont, came to the US market in 1940, they were an immediate smash success. As hemlines continued to rise in the 1930s, silk and rayon stockings became a necessity in many women’s wardrobe, but they were expensive and had to be replaced frequently. When department stores stared selling low-cost nylon stockings nationwide on May 15, 1940, most locations were sold out by noon, according to Distillations magazine from the Science History Institute. By the following year, Dupont sold $25 million worth of nylon yarn, and two years later it had captured an astonishing 30% of the full-fashioned hosiery market. In terms of material science, the origin of that material dates back to 1930, when an organic chemist by the name of Wallace H. Carothers joined DuPont, where he focused on polymerization research.

The first nylon:

On May 24, 1934, one of Carothers’ researchers “successfully pulled a fiber of a polymer based on an aminoethylester. His fiber ultimately the first nylon  retained the remarkable elastic properties of polyester [formulated four years earlier by Carothers’ group] but lacked their drawbacks. However, since the intermediate used to form the polymer, aminononanoic ester, was tremendously difficult to produce, Carothers and his associates kept looking,” writes Distillations. Shortly afterwards, they settled on polyamide 5,10 and polyamide 6,6. The rest, as the cliche goes, is history . . . but, in fact, DuPont still had to overcome several obstacles before reaching that commercial milestone.

The company had to perfect melt spinning under high temperatures to form the filaments, design generators to run the windup of the yarn at high speeds with almost no variation, and develop a surface coating that would not gum up the machines. An article on the American Chemical Society website explains this in much greater detail for those who want to take a deeper dive into the genesis of nylon.

When DuPont had just started reaping the commercial rewards of all this R&D work in 1940, it had to shift nearly all of its nylon production to the military in 1941 to support the war effort. The material was used for everything from parachutes to mosquito nets, reports Mental Floss in its abbreviated history of nylon. Nylon stockings, along with chocolate bars and cigarettes, were also among the coveted goodies that GIs distributed to German citizens, rare luxuries in a decimated population that initially feared retribution.

The nylon riots:

Immediately after the war when production resumed to satisfy consumer demand, lines formed outside of department stores that, according to Mental Floss, dwarfed Black Friday queues and sparked what became known as the “nylon riots.” In Pittsburgh, 40,000 people lined up for more than a mile vying for 13,000 pairs of nylons, according to the Smithsonian magazine.

Carothers, sadly, did not live to see the remarkable success of his invention. After battling depression for several years, he committed suicide in 1936.

source: Norbert Sparrow-Plastics Today