Revista Paint & Pintura - Edição 208 - page 9

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PAINT&PINTURA |
Março2016 | 9
it remains awholly-owned subsidiary of Bayer AG. “Covestro’s
independence isgoingtoallow ittofacetheglobalcompetition in
amore rapid,effectiveandflexiblemanner. Standingexclusively
as an innovation-drivenpolymers company, Covestro is a legally
andeconomicallyseparatebusinesssteppingonsolidgroundsto
ensureabright future,” saysHaraldLiedtke, Covestro’sCEO for
LatinAmerica.
HaraldLiedtkealso says thatCovestrocontinuesdoingbusiness
with theaimofdevelopingproductsandsolutions that improve
people’s lives andpreservenatural resources. “Accordingly, the
three of our business units remain unchanged: Polyurethanes
(PUR), Polycarbonates (PCS), andCoatings, Adhesives andSpe-
cialties(CAS).”
ThefullversionofourinterviewwithHaraldLiedtke,CovestroCEO
forLatinAmerica, isavailable inPortugueseonly.
ALKYDRESINS -NEWDEVELOPMENTSBOASTSUSTAINABLE
APPEAL
Providingimportantbenefitsinpaintformulations,alkydresinsare
inhighdemandandpullwellaheadofotherresintypesinBrazilfor
featuringsustainable innovationscombinedwith lowcost.
Widelyusedinthepaintandcoatingsindustry,alkydresinsprovide
apositivecost-benefitratioand,whenused inpaintformulations,
deliver superior spreading, gloss, adhesion, and chemical and
mechanical strength. In addition, they consist of polymers that
ensuregreatversatility,allowingformulatorstoformulatecuring
systemswithdryingagentsandmelaminesystems,aswellastwo-
-component formulations, according toDiógenes de LimaSilva,
product specialist at ASK’s Resins& Specialties business. “That
makesversatilitycombinedwithreasonablecostsadecisivefactor
inthechoiceofthistypeofpolymer.”
Intermsofinnovation,thehighlightsofthismarketarewaterborne
alkydsystems(dispersions),emulsifiedalkydsystems,80-percent
high-solids systems, andalkyd systems from renewable sources
(monomers developed from renewable sources), according to
TonimariPedroso,GlicextertechnicalsalespersonatCoim.“While
alloftheseproductscanbeconsideredenvironmentallycompliant,
thoseproducedfromrenewablesourcesthatwere introducedby
CoimduringthelatesteditionofABRAFATIaremoreinlinewiththis
trendtowardsenvironmentalsustainability.Thealkydresinsfrom
CoimincorporateItaliantechnologyandknow-how,asadaptedfor
therequirementsoftheBrazilianmarketthankstothepartnership
betweenCoimBrazilandCoimItalyfordevelopingtheseproducts.”
Laboratoryresearchonalkydresinsisfocusedonsustainability,per-
formanceandcost improvement,accordingtoW-TechQuímica’s
technical representativeGrazielaCalzaPandolfo. “For themost
part, the searchgoes on formaterials from renewable sources,
lowerVOC-emissions,specialfunctionalityattributes,andpolymers
that allowendprices for paints and coatings tobe reduced. As
WTechhasbeenbankingonthistrendandresearchingforenviron-
mentallycompliantproducts,we’vedevelopedalineofhigh-solids
resins thatallow for reductionofVOCemissions. To reduce
thecostoftheendproduct,werecommendusingalkydresins
inconjunctionwithourEmultech line,whichenableswater
tobeaddedtoalkydresinswithgreatstability.”
CORROSION INHIBITORS -COMBATINGDEGRADATION
Fundamental topreventing corrosion, corrosion inhibitors
havebeenstandingout invarioussegments,especiallybuil-
dingandconstructionandmanufacturing.
Corrosioninhibitorshavebecomeakeyproductintheformu-
lationofpaintsandcoatings,providingadegreeofprotection
that isnearly indispensable inmanycases.Usually, all kinds
ofcoatingsrequireadditivesthatpreventcorrosion,whether
duringandafterapplicationorthroughouttheproduct’s life
in itspackaging,which isoftenmadeofmetalalloysthatare
susceptible tocorrosiveattack,accordingAromat technical
managerFernandoRosa.“Eventhoughcorrosion inhibitors
areusedmostly inperformancecoatings, suchas industrial
andautomotiveones,decorativecoatingsalsorequirethem
wheneverappliedontometal substratesthataresubjectto
corrosion.”
The latest technological innovations in corrosion inhibitors
currentlystandoutforfavoringthedevelopmentofenviron-
mentally friendlierproducts featuring lowerVOCemissions
andimprovedperformanceintermsofefficiency,productivity
and versatility, so as tomeet increasingly specific require-
ments.“Inthiscontext, theybenefitproducersofthemore
sustainablewater-basedcoatingsandimprovetheapplication
andhandlingaspectsofformulationscontaininganticorrosive
components,”saysRenatoStoicov,Silanesbusinessmanager
forLatinAmericaatEvonik.
DenilsonNovak, salesmanageratFerro’sNubiolabusiness,
stresses that the latestanticorrosivepigment technologies
are linkedwith thedevelopmentof zinc-freeproducts, just
asallresearcheffortsarefocusedonreplacingthechromate-
-based pigments that are typically used in the aerospace
market.“Newanticorrosivepigmentdevelopmentsarealso
underpinnedbyenvironment, healthand safetyconsidera-
tions,withperformance required tobe similar toorbetter
thanthatofphosphateandchromatepigments.”
TITANIUMDIOXIDE -THEUNSHAKABLE
With no replacements, titanium dioxide continues going
strong in thepaintandcoatings industry thanks to itsmain
properties:brightness,hidingpower, lightfastness,easydis-
persion,reducedenergyconsumption,versatility,extremely
highopacity,andmanyothers.
Titanium dioxide (TiO2) is an inorganic chemical that has
longbeenabenchmark in thepaint and coatings industry.
Dependingonwhichofthedifferentproductionprocessesis
used, itcandelivercolorstrength,easydispersion,andother
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