Products for Plastics

Our Products for Plastics

Specialty Silica

ApplicationsProperties / Suitability
SIPERNAT® D 17Polystyrol: Anticaking of prefoamed foam polystyrol granule product. HTV silicon rubber: Active filler. Phenol and melamine resin: Anticaking during storage and improved dosing for press compounds. Polysulfide sealants: Active filler.
SIPERNAT® 22 SUsed to ensure porosity in polyethylene separators for acid/lead batteries, ensures very low electrical resistance. Also suitable for glass mat separators.
SIPERNAT® 44 MSAntiblocking agent in PE and PP films as well as in other film plastics for reducing friction coefficient. Provides very high transparency (less haze) in films.
SIPERNAT® 160As an active reinforcement filler in silicone rubber, results in formulations with a high reinforcement effect, good transparency of vulcanized goods. Moisture absorption is reduced at very low residual salt content; vulcanized product shows high electrical resistance.
SIPERNAT® 310Antiblocking: Antiblocking agent in PE and PP films; provides very low coefficient of friction in films.
SIPERNAT® 320Improves mechanical properties of floor coverings (PVC). Reduces abrasion, improves heat/shape stability in TR rubber soles.
SIPERNAT® 320 DSNucleizes foam structure in foam foils (polystyrol). Anti-plate out agent.
SIPERNAT® 325 CPore builder in PE separators for lead/acid batteries, ensures low electrical resistance and form stability.
SIPERNAT® 360Thermoplastic rubber (TR)
SIPERNAT® 500 LSAntiblocking agent for PE and PP films as well as other film plastics for reducing friction coefficient and maintaining maximum transparency.
SIPERNAT® 880Additives for adhesive manufacturing (polychloroprene).
SIPERNAT® 200As an active reinforcement filler in silicone rubber, results in formulations with very good mechanical properties, very high transparency of vulcanized goods. Due to very low residual salt content, vulcanized product shows high electrical resistance.
SIPERNAT® 120Reinforcement of silicone rubber and sealants

Pigment Blacks

Applications in the plastics industry involve pigment blacks not only for coloring purposes, but also to improve the durability of light and weather-sensitive plastics. They are also used to improve conductivity and antistatic properties of polymers.

Pigment Blacks for coloring
Normally, 0.5-1% pigment black is enough to color plastics in a full tone black. In those cases in which the plastic has a color of its own (e.g. acrylnitrile-butadien-styrol), quantities of pigment black may be necessary to achieve desired pigmentation.
Jetness, color strength, hue etc. are commonly used words when it comes to coloring plastics and explained below.

Jetness represents the blackness – the intensity of the coloration – achievable with a pigment black. The lower the degree of light refraction and light diffusion, the greater the color depth.
Color strength is the degree to which pigment blacks can darken or blacken other coloring constituents – in contrast to white pigments, which are used to lighten colors. If the idea is to only slightly darken a color (be it white or another color), we speak of toning or hueing.
Jetness and (theoretically) color strength tend to increase as the pigment’s primary particle size and structure decreases.

When coloring plastics with pigment blacks, the blackening process results in a certain hue that, depending on the type of pigment, can go either into blue or brown. Here, one must distinguish between surface appearance and transparency when plastics are blackened in a pure tone.

The surface appearance of a black pure tone coloring shows a blue hue that reinforces the sense of color depth, especially when a fine pigment black is used. The structure of the pigment black also influences jetness. With even, fine particles, a low structure will shift the hue towards blue. Coarser pigment blacks with a higher structure, on the other hand, tend to produce a brownish hue.
The effect is reversed when we look at transparency: in the case of a semi-transparent film, for instance, a layer with a pure tone coloring with a pigment black that has a small particle size and low structure will result in a brown hue; coarser pigments with a higher structure will result in a bluish hue.

In the case of white mixes (grayscale), coarse pigment blacks with a high structure lead to a gray with a slight bluish tint.

Good pigment dispersion is crucial to a pigment black’s optimum jetness and color strength. In other words, pigment black agglomerates must be completely dispersed for maximum coloring effect. It is important to note that achieving optimum dispersion becomes more difficult when a finer particle size and a lower structure pigment black is used.

The form (powder or bead) in which the pigment black is supplied also plays a role when it comes to dispersion. Though beaded blacks are easier to ship and handle (higher bulk density, less dust, more accurate dosage etc.), they do not disperse. For this reason, powdered pigment blacks are recommended for coloring plastics in processes that involve limited shearing forces (e.g. when coloring PVC-P, liquid polymer systems) or for toning.

Dispersion problems and dust build-up inherent to handling pigment blacks can be avoided by using Pigment Black Preparations that contain the pigment black in a wetted and well dispersed form.

The added cost of a preparation is more than offset not only by a cleaner handling process, but also by a higher yield (lower pigment dosage for same results) and lower mechanical dispersion requirements.

Pigment Blacks as UV stabilizers

UV stabilization is an important application for pigment blacks in the plastics industry. Their ability to absorb light effectively protects plastics that are exposed to direct sunlight against the photo-oxidative decomposition. Here, pigment blacks fulfill several functions:

  • Shielding of plastic surface from radiation across a broad wavelength band
  • Transformation of light energy into heat
  • Stabilization by capturing radicals

The degree of UV protection provided by a pigment black depends on the type used and usually improves with increasing carbon black concentration.
Polyolefins in particular suffer damage from UV light. Trials using polyethylene have shown that a 2% concentration of a sufficiently fine pigment black will deliver adequate UV protection. Allowing for a safety margin, the upper concentration limit is, as a general rule, 2.5 %. This limit for adding pigment black is in line with most regulations governing the use of pigment blacks in goods used in the food industry. It also ensures that important plastic-specific properties, e.g. mechanical specifications, are not altered beyond measure.
Pigment blacks in the medium specific surface range and with a good dispersion rate are best suited as UV stabilizers. Here, high-structured Regular Color Furnace Blacks with medium-fine particles (19-25 nm) are the recommended solution as they maximize these two key properties. In practice, these pigment blacks are mainly used in the form of highly concentrated pigment black/polyethylene compounds.

Carbon Blacks for conductivity
Plastics are generally not conductive and are very effective insulators. Adding the amount pigment black necessary for coloring or achieving required UV resistance will have virtually no effect on the plastic’s electrical properties. However, once a relatively high concentration is exceeded (and this threshold is a function of plastic and pigment type), electrical resistance suddenly drops and gradually decreases with increasing pigment black concentrations.
High-structure and/or high-surface Color Furnace Blacks and Conductivity Blacks (and High Conductivity Blacks) are especially suited for achieving antistatic properties ort or modifying conductivity. The required amount of pigment black depends on pigment used, binding agent, process and desired specifications.
With homogenous distribution of the conductive black in the system, a pigment black content between 5 and 35 percentage by weight is usually the minimum requirement. Here, the method with which the black is added and the dispersion process play a central role. Differences in processing conditions may lead to wide variances in electrical properties, even if the conductive black concentration remains the same. This is due primarily to process-related orientation phenomena involving the pigment black particles within the matrix and also, to a lesser degree, to differences in gross volume. Also, the type of polymer system used will have an effect on the electrical resistance curve. Though increasing the pigment black concentration in polymer systems will deliver a lower electrical resistance, this does not come without a number of less desirable side-effects, e.g. increased viscosity, reduced thermal stability and disrupted curing or polymerization reactions. These side-effects, however, can mostly be contained to acceptable levels with appropriate additives or by modifying the formulation. Here, the end-user has the choice of a number of alternatives to pure conductive blacks that range from conductive black/polymer compounds to special preparations.
Applications for plastics with enhanced conductivity include packaging for sensitive electronics, semi-conducting cables, floor coverings, manufactured plastic goods in protected areas, conveyer belts, explosives breather tubes etc.

ApplicationsProperties / Suitability
LAMP BLACK 101For black colouring, tinting, good dispersibility due to its high structure
COLOUR BLACK FW 200For high jet colouring, tinting.
COLOUR BLACK FW 1For high jet colouring; Favourable wetting behaviour in polar binder systems in combination with relatively low influence on viscosity.
COLOUR BLACK FW 18For high jet colouring; Favourable wetting behaviour in polar binder systems in combination with relatively low influence on viscosity.
SPECIAL BLACK 4For medium jet colouring; Excellent wetting behaviour in polar binder systems in combination with relatively low influence on viscosity.
HIBLACK® 900LHigh jet colouring
HIBLACK® 890High jet colouring
HIBLACK® 600LHigh jet colouring
HIBLACK® 50LHigh jet colouring
HIBLACK® 40B1Colouring, UV-Stabilizing
HIBLACK® 40B2Conductivity
HIBLACK® 420BConductivity
HIBLACK® 45LBColouring
HIBLACK® 47LColouring
HIBLACK® 40LColourimg
HIBLACK® 40Colouring
HIBLACK® 30Colouring, UV-Stabilizing
HIBLACK® 30LColouring
HIBLACK® 20LColouring
HIBLACK® 20Colouring
HIBLACK® 150BColouring, conductivity
HIBLACK® 160BColouring
HIBLACK® 170Colouring
PIGMENT BLACK PASTE DINP 25/VMass tone colouring
COLCOLOR® UNI 50High jetness mass tone colouring.
COLCOLOR® E 40/F PUV-Stabilizing, mass tone colouring.
COLCOLOR® E 40/60UV-Stabilizing, mass tone colouring.
COLCOLOR® E 50/20Mass tone colouring
COLCOLOR® E 60/RMass tone colouring
COLCOLOR® E 30/90Jet black mass tone colouring.
COLCOLOR® EVS 40/PUV-Stabilizing, mass tone colouring.
COLCOLOR® EVA 40/60Medium jetness mass tone colouring.
COLCOLOR® S 35/60Mass tone colouring
COLCOLOR® SAN 25/18Jet black mass tone colouring
COLCOLOR® P 40/PUV-Stabilizing, mass tone colouring.
COLCOLOR® P 30/18UV-Stabilizing, mass tone colouring.
COLCOLOR® SAN 30/75Jet black mass tone colouring.
DERUSSOL® N 25/LConductivity
PRINTEX® 95For high jet colouring, bluish undertone in masstone applications, low influence on viscosity due to low structure, high loading levels achievable.
PRINTEX® 90For high jet colouring, good dispersibility due to high structure.
PRINTEX® 85For high jet colouring, bluish undertone in masstone applications, low influence on viscosity due to low structure, high loading levels achievable.
PRINTEX® 80For high jet colouring, good dispersibility due to high structure.
PRINTEX® 75For high jet colouring, bluish undertone in masstone applications, low influence on viscosity due to low structure, high loading levels achievable
PRINTEX® 60-AFor medium jet colouring; Protection and stabilization of UV-sensitive plastics, e.g. pipes, cables, films, containers, etc., good dispersibility due to high structure.
PRINTEX® F 80For high jet colouring; good dispersibility due to high structure; Pigment Black with FDA-conformity for polymer systems and coatings, complies with 21 CFR 178-3297.
PRINTEX® F 85For high jet colouring; bluish undertone in masstone applications; low influence on viscosity due to low structure, high loading levels achievable; Pigment Black with FDA-conformity for polymer systems and coatings, complies with 21 CFR 178-3297
PRINTEX® alphaFor medium jet colouring, protection and stabilization of UV-sensitive plastics, e.g. potable water pipes, foodstuff packaging, etc., Pigment Black with a very low sulphur content, antistatic or electrical conductive modification of polymer systems, good dispersibility due to high structure. For spin fibres as PRINTEX® alpha SQ
PRINTEX® F alphaFor medium jet colouring, protection and stabilization of UV-sensitive plastics, e.g. potable water pipes, foodstuff packaging, etc., Pigment Black with a very low sulphur content, Pigment Black with FDA-conformity for polymer systems and coatings, complies with 21 CFR 178-3297, good dispersibility due to high structure
PRINTEX® PFor medium jet colouring, protection and stabilization of UV-sensitive plastics, e.g. potable water pipes, foodstuff packaging etc., Pigment Black with a very low sulphur content, good dispersibility due to high structure; antistatic or electrical conductive modification of polymer systems
PRINTEX® F PFor medium jet colouring; protection and stabilization of UV-sensitive plastics, e.g. potable water pipes, foodstuff packaging etc.; Pigment Black with a very low sulphur content; Pigment Black with FDA-conformity for polymer systems and coatings, complies with 21 CFR 178.3297; good dispersibility due to high structure.
PRINTEX® L6Antistatic or electrical conductive modification of polymer systems; for high jet colouring. For spin fibres as PRINTEX® L6 SQ.
PRINTEX® LAntistatic or electrical conductive modification of polymer systems; for medium jet colouring. For spin fibres as PRINTEX® L SQ
PRINTEX® UFor tinting of polar binder systems; favourable wetting behaviour in polar binder systems in combination with relatively low influence on viscosity; for medium jet colouring.
PRINTEX® VFavourable wetting behaviour in polar binder systems in combination with relatively low influence on viscosity; for medium jet colouring
PRINTEX® 140 UFavourable wetting behaviour in polar binder systems in combination with relatively low influence on viscosity; for medium jet colouring.
PRINTEX® 140 VFavourable wetting behaviour in polar binder systems in combination with relatively low influence on viscosity; for medium jet colouring.
PRINTEX® XE2-BAntistatic or electrical conductive modification of polymer systems.
PRINTEX® XE2Antistatic or electrical conductive modification of polymer systems.
PRINTEX® AFor black colouring.
PRINTEX® 12For black colouring.
PRINTEX® 25Masstone colouring.
PRINTEX® 3Colouring
PRINTEX® 30Mass tone colouring.
PRINTEX® 300Mass tone colouring.
PRINTEX® 60Colouring.
AROSPERSE® 11UV Stabilization, Wire & Cable, Fiber, Thin Film, masstone colouring.
AROSPERSE® 11 IPUV Stabilization, Wire & Cable, Fiber, Thin Film, masstone colouring.
AROSPERSE® 11 SPUV Stabilization, Wire & Cable, Fiber, Thin Film, masstone colouring.
AROSPERSE® 3High Pressure Pipes, UV stabilization, Geomembranes.
AROSPERSE® 5High pressure pipes, Geomembranes, Films.
AROSPERSE® 5-183Wire & Cable.
AROSPERSE® 5-289HDPE Pipes, Geomembranes, Medium term UV protection.
AROSPERSE® 7-256Concentrates with higher loadings for premium applications.
AROSPERSE® 7Utility concentrates, medium gauge film, cold water pipes, molded goods.
DERUSSOL® NA 9/XE2-BConductivity

Matting Agents

In addition to ACEMATT® products based on precipitated silicas, Evonik Degussa GmbH also supplies ACEMATT® OP 278 for special applications.

ApplicationsProperties / Suitability
ACEMATT® OP 278As a matting agent, ACEMATT® OP 278 is mostly effective in plastic films/foils made from PVC (with or without softeners), ABS or PUR. PS and SAN products can be effectively matted as well.ACEMATT® OP 278 significantly reduces residual brilliance of calandered film (only a very small quantity is required and we recommend approx. 1.0 percentage weight). Using ACEMATT® OP 278 will also increase surface roughness, for a dry grip feel and attractive texture. ACEMATT® OP 278 is appropriate for blow film as well. Adding a matting agent such as ACEMATT® OP 278 facilitates quick product changes in film manufacturing lines with considerably shorter retooling times. The matting achieved with ACEMATT® OP 278 remains stable throughout onward processing steps in film manufacturing (stretching). ACEMATT® OP 278 is a copolymer made from the monomer building blocks methylmethacrylate (MMA), styrene (S) and butylacrylate (BA). The matting particles (BA, S) are embedded in a PMMA matrix and are progressively freed by shearing in the mixture preparation stage (e.g. dryblend). ACEMATT® OP 278 comes as a powder with excellent flow properties, no dust build-up and high pouring density that can easily be added to dryblends or any other types of premixes.