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ANTIOZONATES

Edward Menezes (Director

Rossari Biotech Ltd.201 A&B, Ackruti Cor orate !ark, L.B." Mar#,$an%ur ar# 'est, Mu ai )000*+

E ai- Edward/rossari ai-.co

Ozone

zone is or ed natura-- ro at os heric o3 #en, e3 osed to e-ectric dischar#e oru-tra4io-et radiation. 5t is an unsta -e, ower u- o3idizer and -eachin# a#ent which is oisonous.6he #as has a un#ent, irritatin# odor. zone has an industria- a -ications, i.e. to deodorizeair, uri water, treat industria- waste and as a -eachin# a#ent.

6he ozone -a er ound in earth7s u er at os here contains a re-ati4e- hi#hconcentration o ozone that a sor s so-ar u-tra4io-et (89: radiation in a wa4e-en#th not screened

other at os here co onents.

6he resu-tin# shie-din# e ect rotects the earth7s sur ace ro har u- 89 radiation.6here are we-- docu ented accounts o reduced ozone -e4e-s at oth o-es which out-ine the

otentia- e ects on hu an hea-th and en4iron ent.

5n ur an areas, nor a- ozone concentrations can e increased to hazardous -e4e-s (i.e. uto 0.10 :. 6he ui-du occurs ro reactions etween at os heric #ases and h drocar on

o--utants, cata- zed sun-i#ht.

Enc-osed areas can e3 erience increased ozone -e4e-s ro an in#ression o outside air

and e;ui ent inside which #enerates ozone as a roduct.

En#ines, e-ectric -i#htin# and so e heatin# s ste s can urther contri ute to increasedconta ination -e4e-s in enc-osed areas. 6he de#ree o conta ination de ends on air hand-in#e;ui ent, 4enti-ation and a4ai-a -e sur aces to react with ozone, causin# its deco osition.

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B roduct o certain e-ectrica- de4ices

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a3i u durin# the onsoons i.e. in the onths o Gu- , Au#ust and "e te er. 6he ro -e oozone adin# wi-- e ore ro inent in hi#h hu idit re#ions such as Mu ai (than in De-hi:.

Based on o-ecu-ar wei#hts, one #ra o ozone wi-- destro 10.H #ra s o indi#o. 6hisactor eco es increasin#- ore i ortant as the o4era-- shade #ets -i#hter.

Relationship of Indigo dyest ff to concentration of ozoneMo-ecu-ar 'ei#ht

zone 2)5ndi#o 2I2

Ozone fading of Indigo dyest ff ! Impact of H midity @i#h hu idit #i4es rise to a sur ace water i- that increases the ozone a sor tion rate.

5ncreased sur ace concentration 5ncreased rate o di usion into the i re

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2. E3haust A -ication

-on 6 ! Li;uid 1.0 2.0 K o.w.

Ad%ust @ . , treat at )0NC or 20 0 ins., h dro e3tract and dr at 110 NC 120NC.

Test

6he ost e ecti4e testin# ro#ra or ozone ade contro- in4o-4es three sta#es.

1: 6est Ri#id deni

2: 6est ar ent wash rior to so tener a -ication

: 6est A ter antiozonate a -ication

6estin# o the ri#id deni roduct does not redict the ina- outco e or ozone adin#.Conditions o oor indi#o d e enetration a resu-t in -ower than e3 ected ozone adin# anda--ow ti e or reso-ution. A-so, ashion de ands create uni;ue -ends o !o- FCotton,!o- FL cra, etc. 6hese s ecia-t st -es o ten resent di icu-ties in contro--in# ozone ade due to ahi#h de#ree o oor indi#o i3ation ro stainin# o the s nthetic i er.

zone testin# o sa -e #ar ents u--ed ro the wash rocess rior to ina- so tenera -ication can ie-d 4a-ua -e data to ro er antiozonate se-ection. Moderate adin# can e easi-contro--ed with 1 2K ow# a -ication o a Cationic o- eth -ene antiozonate. More se4ere-e4e-s a re;uire an unsaturated o- er t e.

'oncl sions

zone adin# is a a%or concern or a-- ;ua-it conscious deni a are- roducers.E ecti4e and e3ce tiona- rotection ro ozone adin# is now ossi -e. !ro a i-it o success

e#ins with reduction o ackstainin# un i3ed indi#o. Measures taken with addition o thea ro riate anti rede osition a#ents and the contro- o a-- rocess che ica-s in each ste arei ortant rocedures to achie4e the desired adin# resistance.

"e-ection o an e ecti4e antiozonate o erin# the a3i u ossi -e rotection is critica-.!roducts are a4ai-a -e or rotection at e3tended e3 osure -e4e-s to ie-d su erior resu-ts e ondthe standard two c c-e e3 osure eriod. !rocedures or correction o ozone ade disco-orationand antiozonate to u wi-- ro4ide so e easure o success in reducin# #ar ent seconds.

Continuin# chan#es in che ica- treat ents and arket shi ts ake reso-ution orei ortant. Deni #ar ents are continuous- e3 osed to increased -e4e-s o at os heric

o--ution and ozone #eneration. E3tended shi in# routes ro e4er ore distant anu acturin#-ocations a--ow ozone e3 osure o4er #reater eriods o ti e. Manu acturers wi-- rea-izead4anta#es e-i ination o #ar ent re%ection ro ai-ure to eet roduct s eci ication.Retai-ers wi-- ene it ro etter she- -i e and increased consu er con idence in the er or ance;ua-it o ashiona -e deni a are- roducts.