Repi OPTICAL BRIGHTENERS is specialized for their function as optical brighteners, redefine excellence in industrial additives and materials. With low viscosity and high color strength, these brighteners guarantee optimal performance. Exhibiting excellent adhesion and the ability to enhance brightness, Repi Optical Brighteners are the epitome of innovation in the realm of industrial additives. Particularly tailored for Paper and Pulp, Polyether PU Foams, and Textiles, these brighteners also boast the added advantage of low fogging, making them the go-to solution for industries seeking superior brightness and performance across diverse applications.

Functions: Optical Brightener

Features: Excellent Adhesion, High Color Strength, Improves Brightness, Low Fogging, Low Viscosity

End Uses: Paper & Pulp, Polyether PU Foams, Textiles

Technical Data Sheet

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Erik Espling avatar

Erik Espling


30 years experience with plastic resins, inks and coatings. Specializing in TPU, CASE, liquid color dispersions, UV, antistats, and texturing agents.

Logan York avatar

Logan York


10 years experience in liquid color dispersions for cast elastomers & polyurethane foam, providing excellent customer service & technical support.

Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
Industrial Additives Features
Product Benefits
  • Excellent brightening action
  • Colour strength improvement
  • Compatible with polyether and polyester PU systems
  • Easy blending with polyol
  • Low viscosity

Applications & Uses

Industrial Additives End Use
Use Level
0.1 – 3%
Dosage Information
  • Suitable for standard liquid dosing units
  • LDR: 0,1 – 3% on polyol


Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Density (at 20°C)1.10 - 1.15g/cm³-
Viscosity (at 20°C)3,000 - 11,000cP-
Water Contentmax. 0.50%-

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

The additives for Polyurethane
  • REPITAN BONDING ENHANCER (BE) is the liquid blend of selected additives tailored to improve the adhesion of polyether PU foams to foams, or to paper or textile.
  • This reactive additive gives to PU foams extraordinary adhesion strength after the flame lamination process.
  • BE REPITAN helps manufacturers meet strict fogging and VOC emission specifications for flame/heat lamination of polyether foams by reducing total emission levels of finished foams. It might also improve flame behavior properties of PU foams with consequent reduction of the need for flame retardants in the PU formulation.
  • Furthermore, PU Foams containing this additive will generate less smoke in the flame lamination process.

Repi OPTICAL BRIGHTENERS - The additives for Polyurethane - 1

Packaging & Availability

Regional Availability
  • Canada
  • Caribbean
  • Mexico
  • USA
Packaging Information

Standard: fusti da 25, 50 and 200 Kg

Storage & Handling

Shelf Life
12 Months