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Benetex® OB-1

1 of 4 products in this brand
Benetex® OB-1 (1533-45-5)is a heat resistant and chemically stable fluorescent whitener that increases whiteness and provides brighter looking colors. It is used to offset the yellowness of a polymer and to yield a whiter appearance. Optical brighteners create brilliance by a fluorescence process involving absorption of invisible UV light and emission of visible blue light. Benetex® OB-1 is especially useful in polyester and nylon fibers, as well as in high temperature engineering plastics.

Chemical Name: 4,4′-Bis(2-benzoxazolyl)stilbene

Functions: Optical Brightener

CAS Number: 1533-45-5

Compatible Polymers & Resins: Polyamides, Polyesters

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Name

4,4′-Bis(2-benzoxazolyl)stilbene

Dye Type

Fluorescent Dyes

Plastics & Elastomers Functions

Optical Brightener

CAS No.
1533-45-5
EC No.
216-245-3
Technologies

Elastomers,

Pigments & Colorants,

Plastics

Product Families

Pigments & Colorants — Dyes

Specialty Dyes

Elastomers — Elastomer Additives

Other Elastomer Additives

Plastics — Polymer Additives

Pigments & Colorants

Features & Benefits

Materials Features

Heat Resistance,

Low Volatility,

Whitening

Advantages
  • Brilliant, neutral white cast that compensates for yellowing 
  • Low volatility and excellent heat resistant make the product ideal for use in fibers and in engineering plastics processed at high temperatures •
  • In combination with dyes, produces particularly bright shades 
  • Good light fastness 
  • FDA cleared for use in all polymers

Applications & Uses

Markets

Building & Construction,

Consumer Goods

Applications

Consumer Goods — Carpet & Upholstery

Building & Construction — Decorative Materials & Finishes

Carpet

Compatible Polymers & Resins

Polyamides,

Polyesters

Use Level
0.005-0.1%
Applications

Benetex OB-1 HP is recommended to increase the whiteness of polyester and polyamide (nylon) fibers as well as in high temperature engineering plastics, including polycarbonates, polyesters, and polyamides (nylon). It is also suitable for use in styrenic and acrylic polymers.

Guidelines for Use

Recommended loading concentrations for Benetex OB-1 HP range between 50 and 1000 ppm (0.005-0.1%). The product can be used alone or in a variety of blends and combinations with other additives, including antioxidants, processing stabilizers, and light stabilizers. Higher load levels of Benetex OB-1 HP are required if it is used in combination with a UV absorber. The exact formulation to be used is dependent on the substrate, performance requirements, and other factors, and should be determined by the user based on testing to simulate actual conditions of use.

Properties

Physical Form

Powder,

Solid

Typical Properties
ValueUnitsTest Method / Conditions
Melting Pointmin.359°C—
Molecular Weight414.4g/mol—

Regulatory & Compliance

Certifications & Compliance

FDA 21 CFR Regulations

FDA Regulations

Benetex OB-1 HP has been cleared for use in all polymers under 21 CFR §178.3297. Please contact your Mayzo representative for complete details, including restrictions of use.

Packaging & Availability

Country Availability

Canada,

China (Mainland),

Mexico,

USA

Regional Availability
  • Asia Pacific
  • North America

Storage & Handling

Shelf Life
24 Months
Storage

This product may be stored up to two years in a sealed container. Containers should be kept tightly closed when not in use and stored in a cool, dry place.