© the lubrizol corporation 2014, all rights reserved next generation high efficient matting agents...

© The Lubrizol Corporation 2014, all rights reserved

Next Generation High Efficient Matting Agents for UV Coatings

Royce MathewsTechnical Product Manager

2015 Western Coatings SymposiumLas Vegas, Nevada.

For Wood Coatings

© The Lubrizol Corporation 2014, all rights reserved2

Topics for Discussion

General Introduction

Overview of the tested additives

Comparison Trials

Compatibility/Stability

Summary

© The Lubrizol Corporation 2014, all rights reserved3© 2014 The Lubrizol Corporation

General Introduction – Matting Approaches

The term “matting“ describes the general property of a surface to scatter incoming light. As a result of the non directed reflectivity, the surface looks matte.



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The classic approach• Particle related matting effect• The matting effect appears on the surface of the coating and is mainly related to a

rough and uneven surface structure

© 2014 The Lubrizol Corporation



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Internal light scattering• Matting effect mainly related to crystal structures• The matting effect appears inside the coating film. Incoming light will be scattered by

crystalline structures inside the coating film. (Crystals can be generated by controlled precipitation while curing.)




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Controlled surface structuring• Related to special curing phenomenon. • The matting effect appears only on the coatings surface and is related to a fine

microstructure. (Structures can be generated by Excimer curing or via special additives.)




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Matting Agent A(NEW technology)

Proprietary blend of polymers Mean Particle Size: 6 µm

Matting ProcessPrimary:Internal light scattering

Secondary: Surface structuring (without particles)




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Matting Agent B(NEW technology)


Matting ProcessPrimary:Internal light scatteringSurface structuring (without particles)

Secondary: Particle related surface structure




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Matting Agent C(represents the classic matting approach – can be obtained by wax or silica) Untreated silica Mean Particle Size: 9 µm

Matting ProcessPrimary:Particle related surface structure

Secondary: --




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Matting Agent A(NEW technology)

Matting Agent B(NEW technology)

Matting Agent C(represents the classic matting approach – can be obtained by wax or silica)



Untreated silica Mean Particle Size: 9 µm

Matting ProcessPrimary:Internal light scattering

Secondary: Surface structuring (without particles)

Matting ProcessPrimary:Internal light scatteringSurface structuring (without particles)

Secondary: Particle related surface structure

Matting ProcessPrimary:Particle related surface structure

Secondary: --



Comparison trials – Formulation details

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Raw material Supplier Addition level DescriptionLaromer® LR 9004 BASF SE 40.0 Polyesteracrylic

Laromer® LR 8986 BASF SE 31.0 Epoxyacrylic

Laromer® DPGDA BASF SE 24.5 Thinning monomer

Byk® A-530 BYK Chemie 0.5 Air release agent

Irgacure® 184 BASF SE 4.0 Photo initiator

Irgacure® is a registered trademark of the BASF GroupLaromer® is a registered trademark of the BASF GroupBYK® is a registered trademark of BYK Chemie



Comparison trials – Application details

12© 2014 The Lubrizol Corporation

Application method: Wire rod barWet film thickness: 12µm (if nothing else is mentioned)Substrate: LENETA Form N2A2 (B/W contrast card)Curing detailsBulb type: Mercury doted medium pressureBulb intensity: 80W/cmBelt speed: 10m/min


Comparison trials – Matting vs. addition rate

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0 2 4 6 8 10 12 14 160

10

20

30

40

50

60

70

80

90

100

Matting Agent A

Gloss60°

Addition rate (in %)




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0 2 4 6 8 10 12 14 160

10

20

30

40

50

60

70

80

90

100

Matting Agent B

Gloss60°





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0 2 4 6 8 10 12 14 160

10

20

30

40

50

60

70

80

90

100

Matting Agent C

Gloss60°





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0 2 4 6 8 10 12 14 160

10

20

30

40

50

60

70

80

90

100

Matting Agent A Matting Agent B Matting Agent C

Gloss60°




5 7 9 11 13 15 17 19 21 23 250

10

20

30

40

50

60

70

80

5% Matting Agent A

Comparison trials – Matting vs. film thickness

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Film thickness(in µm)

Gloss60°



5 7 9 11 13 15 17 19 21 23 250

10

20

30

40

50

60

70

80

5% Matting Agent B


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Gloss60°


Note: Measurements done with Keyence VK-X210 confocal laser scanning microscope


5 7 9 11 13 15 17 19 21 23 250

10

20

30

40

50

60

70

80

5% Matting Agent C


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Gloss60°


Note: Measurements done with Keyence VK-X210 confocal laser scanning microscope


Compatibility in different oligomers

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Oligomer (Laromer® grades)

65.0 %

Irgacure® 500 5.0 %

Matting agent 5.0 %

DPGDA 25.0 %

Irgacure® is a registered trademark of the BASF GroupLaromer® is a registered trademark of the BASF Group



Compatibility in different oligomers

21© 2014 The Lubrizol Corporation

Application method: Wire rod barWet film thickness: 12µm (if nothing else is mentioned)Substrate: LENETA Form N2A2 (B/W contrast card)Curing detailsBulb type: Mercury doted medium pressureBulb intensity: 80W/cmBelt speed: 10m/min


Compatibility in Polyester acrylates

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PE 56 F

LR 8800

LR 8907

LR 8981

LR 9004

PE 9032

PO 43 F

PO 77 F

PO 84 F

PO 94 F

LR 8982

LR 8889

LR 8967

PO 9026

LR 8765

LR 8986

LR 9019

LR 8987

UA 9048

0

10

20

30

40

50

60

70

80

0

10

20

30

40

50

60

70

80

Matting Agent A Matting Agent B Matting Agent C reactivity

Gloss60°

Reactivity(m/min)



PO 43 F PO 77 F PO 84 F PO 94 F LR 8982 LR 8889 LR 8967 PO 90260

10

20

30

40

50

60

70

80

90

0

10

20

30

40

50

60

70

80

90


Compatibility in Polyether acrylates

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Reactivity(m/min)

Gloss60°



LR 8765 LR 8986 LR 9019 LR 8987 UA 90480

10

20

30

40

50

60

70

0

10

20

30

40

50

60

70


Compatibility in Epoxy and Urethane acrylates

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Reactivity(m/min)

Gloss60°



Results at a glance

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Matting mechanism A

Matting mechanism B

Matting mechanism C

Matting efficiency

Stability at changing film thickness

Compatibility with different oligomers

Matting effect stability vs. reactivity



Summary

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Matting mechanism A Matting mechanism B

Matting mechanism C

Preferred applicationViscosity adjustment for already matted systems

Standalone matting agent for universal

use

Standalone matting agent preferably for thin

films

Major benefitsLiquid matting agent High matting

efficiency at low addition levels

Most established matting agent

Comments

1st generation of wax technology based matting agents that utilizes a new matting mechanism. Additional tool to make viscosity adjusting in matted formulations more easy.

2nd generation of wax based matting technology that combines different matting mechanisms to overcome limitations seen with Matting mechanism A. High efficient stand alone matting agent.

Standard matting technology with high acceptance in the industry. Limitations in terms of matting efficiency, viscosity and particle size . Good combination partner with Matting mechanism A.



Summary

27

Matting mechanism A

Matting mechanism B

Matting mechanism C


Standalone matting agent for universal use

Standalone matting agent preferably for thin

films

Major benefitsLiquid matting agent High matting efficiency

at low addition levelsMost established

matting agent

Comments






Summary

28

Matting mechanism A

Matting mechanism B

Matting mechanism C



Standalone matting agent preferably for thin films


at low addition levelsMost established matting agent

Comments






Summary

29

Matting mechanism A

Matting mechanism B

Matting mechanism C



Standalone matting agent preferably for thin films


at low addition levelsMost established matting agent

Comments





© The Lubrizol Corporation 2014, all rights reserved3030© 2014 The Lubrizol Corporation

Disclaimer

Trademarks owned by The Lubrizol Corporation unless otherwise noted © The Lubrizol Corporation 2014, All Rights Reserved, February 2014

The information contained herein is believed to be reliable, but no representation, guarantees or warranties of any kind are made as to its accuracy, suitable for particular applications or the results to be obtained. The information is based on laboratory work with small-scale equipment and does not necessarily indicate the end product performance. Because of the variations in the methods, conditions and equipment used commercially in processing these materials, no warranties or guarantees are made as to the suitability of products for the applications disclosed. Full-scale testing an end product performance are the responsibility of the user. Lubrizol Advanced Materials, Inc. shall not be liable for and the customer assumes all risk and liability of any use or handling of any material beyond Lubrizol Advanced Materials, Inc.’s direct control. The SELLER MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Nothing contained herein is to be considered as permission, recommendation, nor as an inducement to practice any patent invention without permission of the patent owner.

© the lubrizol corporation 2014, all rights reserved next generation high efficient matting agents...

Documents

coatings surface

classic matting approach

uneven surface structure

incoming light

tested additives7matting

mmatting processprimary

particles secondary

silica untreated silica