Spectra Group Limited H-Nu 780

Product families

Other characteristics

End Uses

Radiation Curable Adhesive, Radiation Curable Coating, Radiation Curable Ink

Functions

Photoinitiator

Name

3H-indolium, 2-[2-[2-chloro-3-[(1,3-dihydro1,3,3-trimethyl-2H-indol-2-ylidene)ethylidene]-1- cyclohexen-1-yl]ethenyl]-1,3,3-trimethyl-, butyltriphenylborate

Markets

• Adhesives & Sealants
• Paints & Coatings

Advantages

Good solubility in a variety of monomers; Capable of curing a wide range of acrylates via free-radical mechanism; Cure with red source (red handheld lasers and laser diodes); Cure through colored substrates (e.g. a red taillight assembly); Initiator bleaching (blue to pale/no color) upon light interaction can act as cure indicator (Borate V enhances cure and bleaching)

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Appearance

Dark Green Powder

Cure

Radiation Cure

Applications

Adhesives & Sealants — Other Adhesives & Sealants Applications; Paints & Coatings — Other Paints & Coatings Applications

Coating Type

Radiation Curable Coating

Technology

CASE Ingredients

Ink and Toner Type

Radiation Curable Ink

Adhesive & Sealant Type

Radiation Curable Adhesive

Application Recommendations

The recommended starting level of H-Nu 780 ranges from 0.15 to 1 wt.% in relation to the total amount of resin in a formulation.; Borate V co-initiator at a 1:1 weight ratio is not required but will increase the cure speed and overall bleaching of the initiator in many formulations, so it is highly recommended.; The H-Nu 780 is quite soluble in most acrylate resins, but it is recommended to predissolve photoinitiator and the Borate V (poor solubility in acrylates) in DMAA (N,N-Dimethylacrylamide, 2-3%) for ease of incorporation into your formulation.

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