Metalworking Additives

The metalworking industry is undergoing significant changes brought about by a heightened awareness of health and hygiene issues, an increased demand on fluid functionality, and a move toward safer, more environmentally acceptable ingredients. Lonza is well poised to provide cost-effective solutions to these and other issues facing formulators of metalworking fluids and corrosion inhibitors. Drawing on global resources in biocides as well as its broad knowledge of custom oleochemical synthesis, Lonza is dedicated to providing innovative technologies that address both current and future metalworking industry needs.

Microbial Control Agents

Lonzaisagloballeaderinmicrobialcontrolagentswithdozensof products used for disinfection, preservation, and hygieneapplications.Utilizingexperiencegainedfromover40yearsofresearchanddevelopment,Lonzamanufacturesadiverselineofactiveingredientsforcontrollingpathogens.Letourbiocidespecialists recommend a preservative to keep your formula-tionsfreefrommicroorganismsduringbothin-canstorageandin-useapplications.

Corrosion Inhibitors

CarboShield® 1000, dialkyldimethyl ammonium bicarbonate/carbonate,isaninnovativealternativetotraditionalcorrosioninhibitors. It has been shown in repeated lab-scale tests andin commercial applications that it can protect steel, alumi-num, copper, brass, zinc, tin and other metal surfaces fromcorrosion. It provides additional benefits as a cationic sur-face-activeagenttohelpwithpartscleaning,greaseremoval,and increased formulation stability. CarboShield® 1000 alsoprovidesremarkablefluidclaritythroughstablemicroemul-sions. CarboShield® 1000 should be included in any programtargetedtowardreducingmetalcorrosion.

Functional Additives

Lonza offers a comprehensive range of emulsifiers such aspolyethylene glycol esters, glycerol esters, and polyglycerolesters. Many of these are also manufactured as food gradeingredients so in addition to their unique functionality, theyareamongthesafestofchemicaladditives.Recentresearchhasshownthattheycanalsoprovidemetalworkingmarket-specificbenefitssuchastrampoilrejectionandfoamcontrol.Contact your nearest Lonza sales representative to learnmoreaboutfunctionaladditivesandtheentiremetalworkingadditiveline.

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Table 1 – ASTM D 3946

Aerobic Bacteria Counts in 5% Synthetic MWF; log reduction

Dantoserve® SG Dantoserve® SG Dantoserve® SG/CQ Triazine TriazineSample 1000 ppm 500 ppm 500/50 500 ppm 1000 ppmTime 0 – – – – –Day 5 7 2 7 6 6Day 8 6 2 7 5 6Day 8 (*) – – – – –Day 12 7 3 7 2 6*afterre-inoculation

As shown in Table 1, Dantoserve® SG provides effective controlof mixed bacteria in a synthetic metalworking fluid under testconditions set forth in ASTM method D 3946. It is superior tothe performance of Triazine (Tris (2-hydroxyethyl) hexahydro-s-triazine) in thetest.Additionally,ablendofDantoserve®SGandCarboquat®MW50showsexcellentperformanceatonly550ppmactives, with the blend significantly outperforming Triazine ateither500or1000ppmactives.

Microbial Control Agents

Control of microorganisms in metalworking fluids is critical intoday’s working environment. Contaminated fluids can separateinto phases, increase corrosion, and emit unpleasant odors.Controlling the microorganism population in metalworking fluidscreatesamorehygienicworkplaceforemployees.Lonza’sexper-tise in disinfection and preservation provides formulators withassuranceforsafeandeffectivebiocontrol.

Graph 1: Free HCHO in Dantogard® and Dantoserve® SG vs. Triazine

Graph 2: Free HCHO in Dantogard® and Dantoserve® SG vs. Triazine at typical use levels

LeveloffreeHCHO*(ppm)/1000ppmActiveat25°C

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Dantoserve®SG 726 654 1423

Dantogard® 4578 4831 4834

Triazine 35383 36119 36749

*HPLCassayoffreeformaldehyde

Day0 Day7 Day30

Dantoserve®SG 102 127 141

Dantogard® 134 201 221

Triazine 358 388 391

*HPLCassayoffreeformaldehyde

Samples of synthetic metalworking fluid containing 1000 ppmactivesweretakenfromastudysimilartotheoneaboveandana-lyzedforfreeformaldehyde.TheresultsareshowninGraph2.

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LeveloffreeHCHO*(ppm)/10%Activeat25°C

InGraph1,Dantogard®showssignificantadvantagesbyprovidinglower free formaldehyde levels in both concentrate and atuse dilution levels. Dantogard® and Dantoserve® SG both showsignificantly lessfreeformaldehydewhencomparedtoTriazine inboth10%solutionsandatuse-dilutionlevels(1000ppm).

Regulatory Status % US EUProduct Chemical Description Form Activity FIFRA* BPD**

Carboquat® MW50 Specialty Quat Liquid 50 a NoDantogard® DMDMH(dimethyloldimethylhydantoin) Liquid 40 NA a

Dantogard® XL-1000 DMDMH(dimethyloldimethylhydantoin) Powder 100 NA a

Dantoserve® SG DMDMHandbenzisothiazolinone Liquid 50 a a

Lonzabac® 12.100 Tertiaryalkylamine Liquid 100 a a

Lonzabac® 12.30 Tertiaryalkylamine Liquid 30 No a

Lonzaserve® SG DMDMH/CMIT/MIT Liquid 50 NA a

Glycacil® L IPBC Liquid 10 NA a

Glycacil® S IPBC Solid 10 NA a

Isocil® MW-14 CMIT/MIT Liquid 14 NA a

Isocil® WT n-OIT Liquid 45 a No

*FIFRA – Federal Insecticide, Fungicide, Rodenticide Act ** BPD – Biocidal Products Directive N/A – Not Applicable

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Copper in 3.5% saltwater after 24 hours

In both pictures, uninhibited control (left), 0.1% active CarboShield® 1000 (right)

Copper Corrosion Results:CarboShield®1000effectivelypreventscoppercorrosionevenunderveryharshconditions.Standard1/2inchcoppertubesweresubjectedtosolutionscontainingeither25ppmbleach(sodiumhypochlorite)or3.5%saltwater(sodiumchloride). Tubes protected with neat CarboShield® 1000 at 0.2%rate(0.1%active)appearedlikenewafter24hours.

Aluminum Samples atpH = 10.5 after 1 week

In both pictures, DI water control (left), 0.1% active CarboShield® 1000 (right)

Aluminum Corrosion/Anti-Staining Results:CarboShield® 1000effectivelyinhibitsstainingandcorrosiononaluminumatelevatedpH (>10). Testing Conditions: Aluminum panels (3003H14, millfinish) were subjected to deionized water pH adjusted to valuesof 10.5 or 11.5 via ammonium hydroxide. Neat CarboShield® 1000was used at 0.2% rate (0.1% active). The panels were observedperiodically forvisualstaining.Asexpected, thehigherpHsampleshowedthegreatestrateofstaining.Unlikeadodecanedioicacid/MEA blend, CarboShield® 1000 significantly reduces staining onaluminum.

Component Typical LevelDDABC 50.0%FreeAmine(didecylmethylamine) 1.2%Methanol 3.3%*PropyleneGlycol 7.2%Water 38.3%Total 100%

*CarboShield®1000Econtains<3.0%Methanol.

Corrosion Inhibitors

Product Chemical Description Form % Activity Applications

CarboShield® 1000 Dialkyldimethylammonium Liquid 50 Flashrustprevention. bicarbonate/carbonate Corrosioninhibition (DDABC) onsteel,aluminum, copper,brass,zinc, tinandothermetals.

Unamine® O Oleylhydroxyethyl Liquid 85 Corrosioninhibitor. imidazoline Canworksynergis- ticallywithother components.

CarboShield® 1000 is an exciting new corrosion control technol-ogybasedondialkyldimethylammoniumbicarbonate/carbonate(DDABC).Itisnon-volatile,chemicallystableinneutraltoalkalinepH,thermallystabletoover130°C,watermiscible,andcompatiblewith oxidants such as hydrogen peroxide and bleach. DDABC ishard water tolerant thereby reducing or eliminating the need forsequesteringagentssuchasEDTAorNTA.

CorrosiontestresultsindicatethatCarboShield®1000isextremelyeffective on a wide range of metals including steel, aluminum,copper,brass,zinc,tin,andgalvanizedsteel.CarboShield®1000isanexcitingnewcorrosioncontroltechnology,andisnowreg-isteredwiththefollowingregulatoryagenciesasametalworking/metalcleaningfluidadditive:TSCA(US),DSL(Canada),andELINCS(Europe).Concisesummariesoftoxicologicalandbiodegradabilitydata are available upon request. For further information pleasevisitourwebsitewww.lonzacarboshield.com.

Aluminum Samples atpH = 11.5 after 2 hours

Copper in 25 ppm bleach water after 24 hours

CompositionThefollowingcompositionistypicalforCarboShield®1000.

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Tramp Oil Rejection Aid APHAProduct Chemical Description Form Color PH

Lonza 1125 PHMG* Liquid 50 7

*Developmentalproduct.

Foam Control Agents Acid SapProduct Chemical Description Form Value Value HLB ApplicationPolyaldo® DGDO-KFG Decaglyceryldecaoleate Liquid 8 170 3 FoamControl

Polyaldo® 10-4-O Decaglyceryltetraoleate Liquid 8 125 7 FoamControl

Ethoxylated Monoglycerides and Polysorbates Acid SapProduct Chemical Description Form Value Value HLB ApplicationLonzest® SMO-5 POE(5)SorbitanMonooleate Liquid 1 – 10 Emulsifier

Lonzest® SMO-20 POE(20)SorbitanMonooleate Liquid 1 – 15 Emulsifier

Lonzest® STO-20 POE(20)SorbitanTrioleate Liquid 7 – 11 Emulsifier

Lonzest® SML-20 POE(20)SorbitanMonolaurateLiquid 1 – 17 Emulsifier

PEG Esters Acid SapProduct Chemical Description Form Value Value HLB ApplicationPegosperse® 400 ML PEG400Monolaurate Liquid 3 95 14 Emulsifier

Pegosperse® 400 DL PEG400Dilaurate Liquid 5 135 10 Emulsifier

Pegosperse® 400 DO PEG400Dioleate Liquid 5 120 8 Emulsifier

Pegosperse® 400 MC PEG400Mono Liquid 2 102 15 Emulsifier Caprylate/Caprate

Pegosperse® 400 MO PEG400Monooleate Liquid 2 84 11 Emulsifier

Pegosperse® 400 MOT PEG400Monotallate Liquid 8 86 11 Emulsifier/ Lubricant

Pegosperse® 600 MO PEG600Monooleate Liquid 6 67 13 Emulsifier

Pegosperse® 600 DO PEG600Dioleate Liquid 5 98 9 Lubricant

Pegosperse® 400 DOT PEG400Ditallate Liquid 10 115 8 Emulsifier

Pegosperse® 600 DOT PEG600Ditallate Liquid 10 95 11 Emulsifier

Functional Additives

Lonza’s expertise in ester technology can provide technolo-gistswithsafe,renewableresourceoptionsfortheirformulat-ingneeds.Fromproductssuchasglycerylmonooleatetoeth-oxylatedsorbitanesters(Polysorbates)toPEGesters,Lonza’sbroad range of emulsifiers and functional agents provide awiderangeofHLBandsurface-activecharacteristics.

Byproperselectionofadditivesbasedontheirphysico-chemi-cal properties, it is possible to optimize their performanceattributes. Our knowledgeable formulation experts can assistin the selection of the proper emulsifier to enhance formula-tionstabilityaswellasrecommendanadditivetocontrolfoam.Whether your goal is to control foam, tramp oil, or increasefluid functionality, Lonza’s broad line of oleochemical-basedingredientsandourtechnicalsupportstaffcanassistinsolv-ingthemostcomplexproblemsfacingthemetalworkingfluidformulatortoday.Callourtoll-freetechnicalsupporthotlineat1-800-365-8324andseewhatLonzacanoffer.

FoamHeight,ml.

Foam Control AgentsTestswererunonsyntheticMWFSusingLonzafoamcontrolagents.Foamreduc-tionforPolyaldo®DGDO-KFGisshowninGraph1.ResultsareforShakeTest.

Graph 160

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(0)0.2%Polyaldo®DGDO-KFG

Monoglycerides and Sorbitan Esters Acid SapProduct Chemical Description Form Value Value HLB ApplicationLonzest® GMO GlycerylMonooleate Liquid 2 170 3 Emulsifier

Lonzest® GDL GlycerylDilaurate Liquid 5 225 7 Emulsifier

Lonzest® GMT GlycerylMonotallate Liquid 2 160 3 Emulsifier

Lonzest® SMO SorbitanMonooleate Liquid 8 155 4 Emulsifier

Lonzest® SML SorbitanMonolaurate Liquid 7 165 8 Emulsifier

Lonzest® TAO SorbitanMonotallate Liquid 8 155 4 Emulsifier

LonzaLtdMuenchensteinerstrasse38CH-4002Basel,SwitzerlandTel+41613168111Fax+41613169111contact@lonza.com

LonzaInc90BorolineRoadAllendale,NJ07401,USATel+12013169200Fax+12017859973contact.allendale@lonza.com

Theinformationcontainedhereinisbelievedtobecorrectandcorrespondstothelateststateofscientificandtechnicalknowledge.However,nowarrantyismade,eitherexpressorimplied,regardingitsaccuracyortheresultstobe

obtainedfromtheuseofsuchinformation.Nostatementisintendedorshouldbeconstruedasarecommendationtoinfringeanyexistingpatent.

©Lonza,Inc.May,2007—PrintedintheUSA.