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BYK innovation makes applications lightweight, more stable and safer

  • Improved physical properties in polyamide applications with BYK-MAX CT 4275
  • Expansion of the BYK-MAX family for lightweight applications and higher thermal stability

Wesel/Earth City, October 1, 2022 - BYK Additives is launching BYK-MAX CT 4275 to the market, a novel, specially developed additive that can be used in a wide variety of polyamides - for example in the automotive industry. The optimized surface treatment and the unique morphology of the silicate provide improved dispersion and incorporation into the thermoplastic matrix while ensuring near-perfect exfoliation in polar systems.

The highly reinforcing mechanism of BYK-MAX CT 4275 improves, among other things, flexural modulus, yield strength, tensile strength and heat deflection temperature, while ensuring excellent flow behavior of the composite. This makes it possible to form thinner components and thereby reduce weight.

BYK Plastics Additives Thermoplastics

In mineral and glass fiber-filled thermoplastic composites, the additive enables a lower total content of mineral and glass fibers without comprising the mechanical properties; it is therefore the ideal solution for lightweight construction applications, for example in the automotive sector. In addition, BYK-MAX CT 4275 will also have a positive effect on surface properties, scratch resistance and flow behavior.

BYK Plastic Additives Thermosets

The new additive does affect the density of the compound, thus offering weight reduction. It is highly miscible and requires no special processing steps.

The innovation will be on display for the first time at K2022. Experience the new BYK-MAX family and meet our experts in person at booth Hall 5 / E17 at the world's largest plastics trade show in Düsseldorf from October 19 - 26, 2022. 

Detailed information on the new BYK-MAX CT 4275 is available here.

Press Releases | October 4, 2022

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Press Release(.pdf)
BYK Plastic Additives Thermosets Image(.jpg)
BYK Plastics Additives Thermoplastics Image(.jpg)
About BYK

BYK is a leading global supplier of specialty chemicals. The company’s innovative additives and differentiated solutions optimize product and material properties as well as production and application processes. Amongst other things, BYK additives improve scratch resistance and surface gloss, the mechanical strength or flow behavior of materials, and properties such as UV- and light stability or flame retardancy. In the field of quality assurance, BYK’s measuring and testing instruments serve to effectively assess appearance and physical properties.


The company’s customers include manufacturers of coatings and printing inks, plastics, adhesives and sealants, as well as cleaners, floor coatings, and lubricants. BYK additives are also successfully used in the construction chemistry, oil and gas, and foundry industries.


BYK has a global network of subsidiaries and operates production sites in Germany (Wesel, Kempen, Schkopau, Moosburg, Geretsried), the Netherlands (Deventer, Denekamp, Nijverdal), and the UK (Widnes), in the USA (Wallingford, Chester, Columbia, Earth City, Gonzales, Louisville, Pittsford), and in China (Shanghai, Tongling).


The company is part of the ALTANA Group and employs a workforce of more than 2,500 people worldwide.