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Ferro > Products & Services > Product Category > Pigments and Dispersions > Inorganic Color Pigments > Cobalt Aluminate Blue Spinel PB28

Cobalt Aluminate Blue Spinel (PB28)

Pigment Blue 28 (C.I. 77346) is a blue mixed oxide of Cobalt (II) and Aluminum (III) with chemical formula CoAl2O4 and a spinel structure.

Cobalt Aluminum Blue Spinel PB28 Pigments
We are a leading global manufacturer of Cobalt Aluminate Blue Spinel (PB28), a blue pigment that ranges from reddish blue to turquoise blue. It is opaque to visible light with moderate NIR reflectance ("cool" pigment). Ferro PB28 provides ease of dispersion with excellent dimensional stability resulting in no warping or shrinkage.

COBALT ALUMINATE BLUE SPINEL (PB28) PRODUCT CHARACTERISTICS
HEAT FASTNESS   LIGHT
FASTNESS		 WEATHER FASTNESS  ACID FASTNESS  ALKALI FASTNESS  CEMENT COMPATIBILITY  SOLVENT FASTNESS 
 >500ºC,
5 min.		  Excellent
(8 on blue wool scale)		  Excellent 
(5 on grey scale)		  Excellent   Excellent   Excellent   Excellent

COBALT ALUMINATE BLUE SPINEL (PB28) RECOMMENDED PIGMENTS

Americas

  • V-3285 – Standard Grade Pigment Blue 28
  • V-9250 – Pigment Blue 28 with a reddish shade and high tinting strength
  • 22-10336 – Pigment Blue 28 with a reddish shade and high tinting strength
  • 22-10446 – Pigment Blue 28 with a reddish shade and high tinting strength


EMEA

  • 22-5091 – Standard Grade Pigment Blue 28
  • 22-10336 – Pigment Blue 28 with a reddish shade and high tinting strength
  • 22-10446 – Pigment Blue 28 with a reddish shade and high tinting strength
  • 22-5500 – Pigment Blue 28 with a turquoise blue shade
  • 22-5475-Pigment Blue 28 with the most reddish shade in our range; a cost-effective solution without losing other typical properties of cobalt pigments such as weather-ability, viscosity or heat fastness
  • 22-5600 –Pigment Blue 28 with a turquoise blue and high tinting strength
  • 22-5700 – Pigment Blue 28 with a turquoise blue and greenish shade

APAC

  • SPP-2008 – Standard Grade Pigment Blue 28
  • 10446s – Pigment Blue 28 with a reddish shade high and tinting strength
  • 22-5500 – Pigment Blue 28 with a turquoise blue shade
  • 22-5600 – Pigment Blue 28 with a turquoise blue and high tinting strength
  • 22-5700 – Pigment Blue 28 with a turquoise blue and greenish shade

 

Cobalt Aluminate Blue Spinel (PB28) Inorganic Pigments for Plastics
COBALT ALUMINATE BLUE SPINEL (PB28) APPLICATIONS:

  • Plastics: Polyolefins, PS, ABS, engineering polymers, PVC, silicones and rubber

  • Coatings: Liquid architectural and industrial, powder, coil, stoving and high temperature resistant coatings

  • Industrial: Cement, concrete, ceramics and glass

VALUE ADDED SERVICES
Advanced Color Matching
Ferro technicians combine their talents with today's most advanced computer color analysis equipment to offer our customers precise color-matching services. Our spectrophotometry process minimizes metamerism, speeds up color matching, ensures consistent quality and helps identify the pigment combination that produces any given color for the lowest possible cost and right performance characteristics, including outdoor durability and NIR reflectance.

Ferro can match your color chip/drawdown or we can refer to complete files of OSHA, Munsel, RAL, Federal Standard 595 Series or Pantone® matching systems to achieve your reference number. All of our colors are matched to Ferro standards or your reference sample, ensuring precise color reproduction from order to order.

Providing Formulation Guides/Assistance with Startup Formula Creation
We assist customers in their product development efforts to ensure regulatory compliance such as usage in food, and cosmetics; and desired performance including anticorrosion, outdoor durability and NIR reflectance.

 

Pigments Advanced Color Matching and Lab Testing-Ferro
Local Laboratory Testing 
Our laboratory facility teams support customers’ production and development activities, including accelerated corrosion testing, weatherability testing, heat build-up and total solar reflectance testing and migration testing.

Custom Formulations
We work closely with our customers to co-innovate and develop customized high-performing and economical coloring solutions based on application requirements and operational processing needs, including custom formulations for paints, coatings, cement, concrete, inks, ceramics, glass, leather, metal and plastics.

Custom Manufacturing
Ferro provides custom manufacturing services to add value to specific projects, particularly in cases which our production facilities and know-how allow our customers to reach cost-efficiency targets or attain higher performing final products.


Toll Manufacturing
For customers who need additional manufacturing capabilities, we provide a full range of manufacturing capacities, from pilot runs to full-scale production.