Iden­ti­fi­ca­tion

Name

ChemWhat-671

Prop­er­ties

Appear­ance

White to off-white powder

Safe­ty Data

RIDADR 

NONH for all modes of transport

Spec­i­fi­ca­tions and Oth­er Infor­ma­tion of Our ChemWhat-671

Prod­uct Information

  1. ChemWhat-671 is a low-odor, yel­low­ing-resis­­tant free-rad­i­­cal pho­toini­tia­tor designed to facil­i­tate both sur­face and deep cur­ing. It effec­tive­ly ini­ti­ates the pho­topoly­mer­iza­tion of unsat­u­rat­ed poly­mers (such as acry­lates) in com­bi­na­tion with monovinyl or mul­ti­func­tion­al vinyl monomers.
  2. Com­pared to Pho­toini­tia­tor 184, ChemWhat-671 offers sev­er­al advan­tages : a high­er mol­e­c­u­lar weight, a faster cur­ing rate, low­er odor, and supe­ri­or resis­tance to yel­low­ing and weath­er­ing after cur­ing. Fur­ther­more, it exhibits low migra­tion prop­er­ties — there­by meet­ing envi­ron­men­tal com­pli­ance require­ments — and serves as an excel­lent sub­sti­tute for tra­di­tion­al small-mol­e­cule pho­toini­tia­tors typ­i­cal­ly used for sur­face drying.

Rec­om­mend­ed Dosage

1 – 3% (adjustable based on the spe­cif­ic require­ments and per­for­mance of the actu­al formulation).

Iden­ti­fi­ca­tion Methods

HNMR, HPLC

Puri­ty

99% min

Shelf Life

12 months

Pack­ag­ing Specifications

20 kg/​carton, or pack­aged accord­ing to cus­tomer requirements.

Stor­age

Store in a sealed con­tain­er in a cool, dry, dark, and well-ven­ti­lat­ed area.

Known Appli­ca­tion

  1. Used in UV coat­ings, par­tic­u­lar­ly suit­able for cur­ing appli­ca­tions requir­ing low odor and min­i­mal yel­low­ing — such as wood fin­ish­es, 3C coat­ings, etc.
  2. UV inks, food pack­ag­ing inks, and paper varnishes.
  3. UV adhesives.

Gen­er­al View of Documents

UV Absorption Comparison Chart ChemWhat-671 vs 184
UV Absorp­tion Com­par­i­son Chart ChemWhat-671 vs 184

This prod­uct is devel­oped by our R&D com­pa­ny Warshel Chem­i­cal Ltd (https://​www​.warshel​.com/).

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