KRAIBURG’s TPE Tailored for Asia Pacific Market Ideal for Interdental Brushes

KRAIBURG #TPE’s THERMOLAST® R-RC/FC/PCR/AP series, designed for the #asiapacific market, is suited for #interdental #brush and other dental tools application.

Wide Hardness Range of 30-90 Shore A:

Using cutting-edge materials such as #thermoplastic #elastomers (TPE) from the bristles to the handle ensures that the design and functionality required for interdental brushes are met. The THERMOLAST® R-RC/FC/PCR/AP series from KRAIBURG TPE offers a wide hardness range of 30-90 Shore A, efficient processing via multi-component injection molding, and good adhesion with PP, among other benefits.

The THERMOLAST® R-RC/FC/PCR/AP series offers unique combination of features and properties to achieve design and functionality outcomes for interdental brushes, particularly grip, handle, and tip cover applications. The series features 9-35% post-consumer recycled content (hardness-dependent).

THERMOLAST® R-RC/FC/PCR/AP series allows for the customization of a wide range of surfaces, from soft-touch and smooth or silky feel to high surface friction, depending on the design requirement. The series' exceptional anti-slip feature makes it ideal for applications requiring an ergonomic grip and easy maneuvering.

Conforms with REACH SHVC and RoHS:

THERMOLAST® R-RC/FC/PCR/AP series conforms with #REACH SHVC and #RoHS, ensuring that the material is free of restricted chemical or hazardous substances, as required by #Europeanregulations. The series also meets food contact regulatory criteria including (FDA) CFR21.

THERMOLAST® R-RC/FC/PCR/AP series enables manufacturers to incorporate value-added features into their products. Furthermore, with precoloration options, the series, which is available in both natural and translucent colors, may be customized in a variety of hues for a vibrant and appealing look of the products.

Source: KRAIBURG/Specialchem

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Today's KNOWLEDGE Share :The differences between wetting agents and dispersants

Today's KNOWLEDGE Share

What are the differences between wetting agents and dispersants?

Several types of additives can be used in the dispersion process in which solid particles, like pigments and fillers, are distributed and stabilised in a liquid.

Often two categories of additives, wetting agent and dispersants, are mentioned in one breath. However, the two materials differ strongly with respect to the role they play in the system and with respect to chemical composition and morphology of the molecules they are composed of.

Functionality

It is important to have a clear view on what each raw material that is used in a paint or ink should do. The job a raw material, like an additive, must do in a system is called functionality.

Wetting agents

Wetting is the first step in the dispersion process. The air that surrounds the solid particles in an agglomerate must be substituted by liquid. Wetting will take place when the surface tension of the liquid is low compared to the surface energy of the solid particles. Wetting will not occur when the surface tension of the liquid is too high. In that case, the surface tension of the liquid can be lowered by adding a wetting agent. A wetting agent does its job because the molecules adsorb and orient on the liquid-air interface.

Dispersants

Solid particles attract each other. For this reason, energy is needed to separate the particles from each other in the second step of the dispersion process. Also, solid particles must be stabilised after they have been separated from each other. The particles will move to each other and glue together again when particle-particle repulsion is insufficient. The spontaneous process of gluing together of solid particles in a liquid is called flocculation. The functionality of a dispersant is to prevent flocculation. Dispersants do their job because the molecules adsorb on the solid-liquid interface and assure repulsion between the particles.

Repulsion can result from two mechanisms that may either be used separately or in combination:

Electrostatic stabilisation: all particles carry a charge of the same sign.

Steric stabilisation: all particles are covered with tails dissolving in the liquid that surrounds the particles.

Source:essar.com

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#wettingagents #dispersants #polymers #polymerchemistry

SABIC’s Glass Fiber-reinforced Copolymer Earns UL Verified Mark

SABIC announced that its #STAMAX™ 30YH570 resin has earned the UL Verified Mark from Underwriters Laboratories.

This 30% #glass fiber-reinforced copolymer resin, a featured product offered under the company’s BLUEHERO™ electrification initiative, is the first polymer used in electric vehicle (EV) battery systems to receive UL Verification for marketing claims of thermal and mechanical performance.

UL Verification, based on an objective, scientific assessment by a respected third party, can give customers high confidence in the flame delay performance of this product.

Milestone in Evolving EV Battery Systems:

The vast majority of EV batteries perform without issues throughout their useful life. Although thermal runaway incidents are extremely infrequent, the safety-conscious automotive industry is highly focused on ensuring that the design and performance of EV battery systems prolong the time available to exit a vehicle by delaying the propagation of a fire beyond the battery pack for as long as possible.

A key consideration is the proper selection and deployment of fire protection materials used for battery pack components, including enclosures and covers, trays, thermal barriers that separate cells into groups, etc.

According to Venkatakrishnan Umamaheswaran (UV), SABIC’s global Automotive marketing director, “UL Verification for the thermal runaway protection of STAMAX™ 30YH570 resin is a significant milestone in our development of polymer materials for today’s rapidly evolving #EVbattery systems. This recognition not only underscores the exceptional performance and safety features of our polymer, but also reinforces the importance of our BLUEHERO™ initiative. By providing cost-effective, lightweight plastic solutions, SABIC is helping to advance EV technology.”

Thermoplastics Over Outdated Steel

Thermal runaway box testing according to #UL 2596, Test Method for Thermal and Mechanical Performance of #BatteryEnclosure Materials, demonstrated that STAMAX™ 30YH570 resin withstood an internal box pressure of 250 kPa and an internal box temperature of 420°C. Results were based on three replicate tests, with a panel thickness of 4mm. The SABIC material features an intumescent capability that helps with fire suppression. Its other key properties include high stiffness and strength and easy processing.

This UL Verification serves as further validation of #SABIC’s continued progress under its BLUEHERO™ initiative in demonstrating the performance advantages of #thermoplastics over outdated steel and other metals for #batterypacks. These benefits include weight and cost reduction, increased functional integration, and enhanced electrical and thermal insulation.

Source: SABIC/Omnexus-specialchem

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Today's KNOWLEDGE Share :Hermann Emil Fischer-Nobel prize 1902

Today's KNOWLEDGE Share

Hermann Emil Fischer-Nobel prize 1902

Emil Hermann Fischer, more commonly known as Emil Fischer, was an eminent German organic chemist. He received the 1902 Nobel Prize for Chemistry for his influential research regarding purines and sugars.

Fischer followed Baeyer to Munich in 1875 as an assistant, becoming a Privatdozent (unpaid lecturer) in 1878, and an assistant professor in 1879. During his time in Munich Fischer continued his research on hydrazines. Together with his cousin Otto, Fisher demonstrated that rosaniline and related dyes were derivatives of triphenylmethane.

Three years later, having now a reputation as an excellent organic chemist, Fischer accepted the position of Professor and Director of the Chemistry Institute at Erlangen in 1882, later accepting a similar position in Würzburg in 1885.

During this time, Fischer began his research on the active constituents of tea, coffee and cocoa (caffeine and theobromine). His research led him to realize that many vegetable substances all belonged to one family group. He gave the name purines to these compounds, which had a base containing nitrogen and a bicyclic structure. He successfully synthesized several purines including caffeine in 1895 and uric acid in 1897. He suggested formulas for the purines uric acid, caffeine, theobromine, xanthine and guanine.

In addition to purines, Fisher also researched the known sugars and he established the stereochemical nature and isometry of these sugars. He synthesized glucose, fructose and mannose in 1890 starting from the substance glycerol.

Fischer became the successor to A. W. von Hofmann, as director of the Chemistry Institute of Berlin in 1892, a position he kept until his death.

Between 1899 and 1908 he studied proteins and enzymes. He established the important “Lock and Key Model” for the visualization of the substrate and enzyme interaction. He formulated that amino acids, which are the building blocks of proteins, are joined together by “peptide bonds”. He also devised a method of combining amino acids to form proteins known as peptides.

Source:https:famousscientists.org

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#chemistry #purines #enzymes #sugars #peptide #aminocids #proteins #discovery #nobelprize

Avantium Secures EU Grant to Develop FDCA based Biodegradable Polyester Blends

Avantium announces that it has been awarded a €0.76 million grant by the EU Horizon Europe program for its participation in the research and development program Rebiolution.

This program aims to design and synthetize biobased and #biodegradablepolyester blends based on #FDCA (furan dicarboxylic acid) and other biobased monomers, to be used as plastic coating for food #packaging and for mulch films for #agricultural applications.

Opportunity to Create Variety of Polymers:

The €0.76 million grant will be paid out in tranches to #Avantium over a period of three years, starting in June 2023. Avantium has developed the YXY® Technology that converts #plantbased sugars into FDCA, which can be polymerized together with plant-based mono-ethylene glycol (MEG) into the sustainable plastic PEF (polyethylene furanoate).

As a monomer, FDCA brings the opportunity to create a variety of polymers, from polyesters, polyamides, and polyurethanes, to coating resins, plasticizers and other chemical products. Avantium is currently constructing the world’s first commercial FDCA facility in Delfzijl (the Netherlands), with a capacity of 5,000 tons per annum and set to open in 2024.

Under the Rebiolution program, Avantium will provide several hundreds of kilograms of FDCA for the development and production of a biodegradable and compostable polyester blend. The intention is to use the resulting Rebiolution bioplastic as plastic coating for food packaging (paper/plastics composites), as an alternative for #fossilbased polyethylene (PE).

Another intended application for the Rebiolution #bioplastic is to use it as mulch films for agricultural applications. As such, this new polyester could be a fully biobased alternative for the widely used #PBAT (butyleneadipate-co-terephthalate), which is partly fossil-based.

Kai Siegenthaler, coordinator of the Rebiolution project and responsible for biopolymers research at BASF, comments, “FDCA is a key element in the Rebiolution strategy. The potential of FDCA is based on its plant-based origin and on its structural similarity to the largest-volume commodity chemical #PTA (purified terephthalic acid). By reacting FDCA with other biobased monomers, we intend to produce a 100% biobased and biodegradable polyester which also fulfils requirements regarding processing, lifetime, performance, and cost effectiveness. We strongly believe that the resulting bioplastic can help to achieve the challenging circularity goals which the EU sets itself.”

“We are delighted to supply FDCA for the Rebiolution project. FDCA was listed in 2004 by the US Department of Energy as the number two in the top 12 priority chemicals for establishing the green chemistry industry of the future.

Source: Avantium/specialchem

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