UV-234

I. Informatio Fundamentalis

Nomen Chemicum

2-[2'-hydroxy-3',5'-bis(-dimethyl benzyl)-phenyl]benzotriazolum

Numerus Registri CAS:  70321-86-7

Formula Molecularis: C30H29N3O

Formula structurae:

iI. Introductio

UV-234 est absorptor ultravioletti generis benzotriazoli. Caracterizatur fortissima et lata absorptione radiationum ultraviolettarum; UV-234 praebet excellentem photostabilitatem polymeris ob expositionem luci ultraviolettae, inter alia retardans flavescentiam coloris, prohibens embrittlementum, et conservans proprietates mechanicas.

UV-234 maxime efficax est in polymeris styrenicis, PVC, polyesteribus non saturatis, polyurethanis, polymeris acrylicis et polycarbonatis.

iII. Proprietates Physicae

1. Pondus Moleculare: 447.58

2. Aspectus: pulvis crystallinus albus ad flavescens

3. Punctum Fusionis: ≥139.5–141 °C

4. Contentus: ≥99% (HPLC)

5. Transmittantia: ad 460 nm ≥97%, ad 500 nm ≥98%

IV. Praeceptum

1. Sine odore, non addit polyméris odores.

2. Insensibilis ad iona metalli.

3. Non inflammabilis, non explosibilis, non toxicus, sanitati innocuus.

4. Valde alta stabilis photonica propter fortissimam suam facultatem absorbendi lucem, praesertim in regione ultravioletta (270–400 nm).

5. Valde stabilis ad calorem, et uti potest in plasticis, quae altas temperaturas elaborationis postulant.

6. Vix absorbens lucem visibilem, praesertim idoneus ad productos incolores et levis coloris.

V. Applicationes (ex pondere polymeri)

1. Polymēra styrenica: 0,2–0,5 % p.p. pro PS

0,3–0,5 % p.p. pro ABS

0,5–2,0 % p.p. pro HIPS

2. Chloridum polyvinylīcum: 0,2–0,5 % p.p. pro PVC

3. Polyurethanum: 0,3–1,0 % p.p. pro PS

4. Polyacrylātum: 0,15–0,3 % p.p. pro PS

5. Polycarbonātum: 0,15–0,3 % p.p. pro PS

6. Polyester insaturātus: 0,2–0,4 % p.p. pro PS

VI. Toxicitās et sēcūritās

UV-P sine perīculō manīpulārī potest nec cutem īrritāre.