REACH, Solvent Legislation and its implications on Conformal Coating Dr Lee Hitchens

Overview REACH – what is it? Timelines for implementation for conformal coatings Solvent legislation and the impact on conformal coatings Implications for conformal coatings Solutions – silicones, water based and UV curable Issues with the new technology conformal coatings Summary

REACH – what is it?

Timelines for implementation for conformal coatings

Solvent legislation and the impact on conformal coatings

Implications for conformal coatings

Solutions – silicones, water based and UV curable

Issues with the new technology conformal coatings

Summary

Overview of REACH Regulation, Evaluation, Authorisation and Restriction of Chemical Substances. REACH entered into force on 1 June 2007 Replaces EINECS (European Inventory of Existing Chemical Substances)

Regulation, Evaluation, Authorisation and Restriction of Chemical Substances.

REACH entered into force on 1 June 2007

Replaces EINECS (European Inventory of Existing Chemical Substances)

Timeline for the implementation of REACH June 2008 : European Chemicals Agency becomes operational. June 2008 to November 2008 : Pre-registration of phase-in substances . (any substances not pre-registered will be subject to full testing before being allowed onto the market). Applies to all substances manufactured or imported in quantities > 1 tonne per year. November 2010 : Registration deadline for substances in quantities of 1000 tonnes and above as well as carcinogens, mutagens and substances toxic to reproduction (CMR category 1 and 2) above 1 tonne/year and substances classified as very toxic to aquatic organisms (R50/53) above 100 tonnes. May 2013 : Registration deadline for substances in quantities of 100 tonnes and more. May 2018 : Registration deadline for substances in quantities of 1 tonne and more.

June 2008 : European Chemicals Agency becomes operational.

June 2008 to November 2008 : Pre-registration of phase-in substances . (any substances not pre-registered will be subject to full testing before being allowed onto the market). Applies to all substances manufactured or imported in quantities > 1 tonne per year.

November 2010 : Registration deadline for substances in quantities of 1000 tonnes and above as well as carcinogens, mutagens and substances toxic to reproduction (CMR category 1 and 2) above 1 tonne/year and substances classified as very toxic to aquatic organisms (R50/53) above 100 tonnes.

May 2013 : Registration deadline for substances in quantities of 100 tonnes and more.

May 2018 : Registration deadline for substances in quantities of 1 tonne and more.

Some definitions Substance : a chemical element, manufactured or in the natural state. Preparation : a mixture or solution composed of two or more substances. Manufacturer : a company that manufactures substances. Downstream user (1) : companies that use substances to make preparations. Downstream user (2) : companies that utilise preparations in their products.

Substance : a chemical element, manufactured or in the natural state.

Preparation : a mixture or solution composed of two or more substances.

Manufacturer : a company that manufactures substances.

Downstream user (1) : companies that use substances to make preparations.

Downstream user (2) : companies that utilise preparations in their products.

How does it work

HumiSeal Implementation Plan Make sure we are fully informed by monitoring the emerging guidelines. By 1st December 2008 have issued REACH compliant MSDS to all clients currently using our conformal coatings. Ensure that our raw material suppliers have : Pre-registered all products supplied to us, coming under REACH by November 2008. That all products are registered by the deadlines of : November 2010 > 1000 tonnes, June 2013 >100 tonnes and June 2018 > 1 tonne. Work with our clients on all aspects of REACH relating to HumiSeal conformal coatings. Continue development of environmentally safe products that do not require registration under REACH.

Make sure we are fully informed by monitoring the emerging guidelines.

By 1st December 2008 have issued REACH compliant MSDS to all clients currently using our conformal coatings.

Ensure that our raw material suppliers have :

Pre-registered all products supplied to us, coming under REACH by November 2008.

That all products are registered by the deadlines of : November 2010 > 1000 tonnes, June 2013 >100 tonnes and June 2018 > 1 tonne.

Work with our clients on all aspects of REACH relating to HumiSeal conformal coatings.

Continue development of environmentally safe products that do not require registration under REACH.

Alongside REACH there has also been VOC legislation in recent years....

Background Solvents historically used for conformal coating – many benefits New Solvent Emissions Directive Need to find solvent-free solutions What are the impacts of the new technology

Solvents historically used for conformal coating – many benefits

New Solvent Emissions Directive

Need to find solvent-free solutions

What are the impacts of the new technology

What are the VOC controls? Reduced solvents ISO 14000 Improved environment with less pollution Low or no tax

Reduced solvents

ISO 14000

Improved environment with less pollution

Low or no tax

Conformal Coating - What’s New? Insurance Liability Increased risk in processing hazardous or flammable solvents Employer liability Operator safety Long term health risks

Insurance Liability

Increased risk in processing hazardous or flammable solvents

Employer liability

Operator safety

Long term health risks

VOC controls Emission of VOC compounds into air, soil, water any organic compound having at 293.15 K a vapour pressure of 0.01kPa or more (i.e. any solvent with bp < 250 ° C) Organic compound shall mean any compound containing Carbon and at least one or more of hydrogen, halogens, oxygen, sulphur, phosphorous silicon or nitrogen

Emission of VOC compounds into air, soil, water

any organic compound having at 293.15 K a vapour pressure of 0.01kPa or more (i.e. any solvent with bp < 250 ° C)

Organic compound shall mean any compound containing Carbon and at least one or more of hydrogen, halogens, oxygen, sulphur, phosphorous silicon or nitrogen

VOC free Solutions for conformal coatings Solventless - Using UV curing technology, conformal coatings with no solvents (100% solids) Solventless – Using conformal coating silicones (100% solids) Water based – Conformal coating Emulsions using AR and UR hydrophobic polymers

Solventless - Using UV curing technology, conformal coatings with no solvents (100% solids)

Solventless – Using conformal coating silicones (100% solids)

Water based – Conformal coating Emulsions using AR and UR hydrophobic polymers

UV curable Conformal coating Solventless - UV Since 1995 NO SOLVENTS! UL & MIL Spec approvals High speed curing in seconds

Solventless - UV

Since 1995

NO SOLVENTS!

UL & MIL Spec approvals

High speed curing in seconds

Conformal Coating - What’s New? Solvent less UV - Issues: Flexibility, prone to cracking during T shock testing Curing in shadows areas under components (often >72 hours) Difficult to rework Requires more sophisticated process plant Properties from primary and secondary curing mechanisms may differ

Solvent less UV - Issues:

Flexibility, prone to cracking during T shock testing

Curing in shadows areas under components (often >72 hours)

Difficult to rework

Requires more sophisticated process plant

Properties from primary and secondary curing mechanisms may differ

Reliable secondary moisture cure mechanism < 48 hrs Extremely flexible (-40 to 150C) Easily selectively coated Extremely Chemical resistant High Temperature resistance (150C constant) Rework cleanly with soldering iron Humiseal UV40 Conformal coating

Reliable secondary moisture cure mechanism < 48 hrs

Extremely flexible (-40 to 150C)

Easily selectively coated

Extremely Chemical resistant

High Temperature resistance (150C constant)

Rework cleanly with soldering iron

Water based Conformal coating emulsions of hydrophobic polymers -> no affinity for water HumiSeal 1H2O series (excellent hydrolytic stability). Proven formulations for use on: Dip Coating Systems Spray Coating Systems

emulsions of hydrophobic polymers -> no affinity for water

HumiSeal 1H2O series (excellent hydrolytic stability).

Proven formulations for use on:

Dip Coating Systems

Spray Coating Systems

MIL Spec Qualified UL Approved Non-flammable Safer to use Reduced fume extraction demands Water based Conformal coating

MIL Spec Qualified

UL Approved

Non-flammable

Safer to use

Reduced fume extraction demands

New formulations have exce llent high temperature performance to 200 0 C Superior flexibility Repairable Fast curing <30 minutes at room temperature Water based Conformal coating

New formulations have exce llent high temperature performance to 200 0 C

Superior flexibility

Repairable

Fast curing <30 minutes at room temperature

Developed for automotive industry Ideal for Ultrasonic selective coating Improved dielectric properties Improved water-resistance Increased adhesion Easier to Rework Looks more like 1B31/1B73 1H20 AR3 Water based Conformal coating

Developed for automotive industry

Ideal for Ultrasonic selective coating

Improved dielectric properties

Improved water-resistance

Increased adhesion

Easier to Rework

Looks more like 1B31/1B73

Implications of change – moving away from solvents Solvents historically used reduce viscosity to facilitate application enable rapid drying Evaporation of solvent yields thin films clean the substrate give good wetting hide many cleanliness issues

Solvents historically used

reduce viscosity to facilitate application

enable rapid drying

Evaporation of solvent yields thin films

clean the substrate

give good wetting

hide many cleanliness issues

Implications of change So solvents are mostly a good thing for coating application, but bad for environment Successful implementation of solvent-free coatings is possible often see improved performance. Water-based works well

So solvents are mostly a good thing for coating application, but bad for environment

Successful implementation of solvent-free coatings is possible

often see improved performance.

Water-based works well

Implications whichever route you take Thicker films – not necessarily a bad thing! Curing can be an issue with thicker films Solvent-less products more prone to de-wetting Cleanliness becomes much more important Cleaning will probably become normal No direct solvent-free replacement Water-based is closest

Thicker films – not necessarily a bad thing!

Curing can be an issue with thicker films

Solvent-less products more prone to de-wetting

Cleanliness becomes much more important

Cleaning will probably become normal

No direct solvent-free replacement

Water-based is closest

Summary REACH will being to ramp up very soon (before 2009!) It will impact all areas of the chemical industry VOC controls will lead further drives away from solvent based coating New coating technologies must be developed to counter this: Humiseal UV40 and AR3 are the solution to meet those legislation

REACH will being to ramp up very soon (before 2009!)

It will impact all areas of the chemical industry

VOC controls will lead further drives away from solvent based coating

New coating technologies must be developed to counter this:

Humiseal UV40 and AR3 are the solution to meet those legislation

Any questions?