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Tinopal® OB

Technical Datasheet | Supplied by BASF
HSP Distance with Solvent Yellow 98: 0.7
Tinopal® OB by BASF is a 2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole). It is a high molecular weight optical brightener / fluorescent whitening agent of the thiophenediyl benzoxazole class. Tinopal® OB features excellent resistance to heat, exceptional whitening properties, good light fastness and low volatility. It has a brilliant bluish cast, is readily soluble in organic solvents and features good compatibility in various substrates. Suitable for the optical brightening of polymers at all stages of processing. It is highly effective in polymer substrates such as engineering plastics such as polyesters, polycarbonate, polyamides and acrylics, thermoplastic polyurethane, polyvinylchloride, styrene homo- and copolymers, polyolefins and other organic substrates. Main applications include synthetic leather, fibers, molded articles, films and sheets as well as packaging applications. The use levels range between 0.0005-0.0010 % in unpigmented polyolefins and 0.005-0.100 % in other plastics.
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Product Type
Optical Brighteners / Whitening Agents
Chemical Composition
2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole)
CAS Number
7128-64-5

Compatiblity with other products

Find products that are predicted to be compatible with Tinopal® OB.

This list of compatible products is generated out of estimated HSP values. A practical determination of these HSP values would provide higher certainty.
Learn more about Hansen Solubility Parameters (HSP) and their use in predictive formulation.

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