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Home , Polyvinyl butyral

Mowital® – Polyvinyl butyral (PVB)

Introduction and Overview Table of contents

1. The vinyl acetate value chain of Kuraray 2. Properties and applications of Mowital® 3. The excellent adhesion of Mowital® 4. The good solubility of Mowital® 5. Molecular structure of Mowital® 6. Nomenclature of Mowital® 7. Schematic overview of the Mowital® product portfolio 8. Mowital® BA – mixed acetals

January 28, 2020 Global Business – Technical Resin 2 1. The vinyl acetate value chain of Kuraray

Vinyl acetate (VAM) Poly (vinyl acetate) Poly (vinyl alcohol) Poly (vinyl butyral)

January 28, 2020 Global Business – Technical Resin 3 1. The vinyl acetate value chain of Kuraray

Vinyl acetate (VAM) Poly (vinyl acetate) Poly (vinyl alcohol) Poly (vinyl butyral)

January 28, 2020 Global Business – Technical Resin 4 1. The vinyl acetate value chain of Kuraray

Vinyl acetate (VAM) Poly (vinyl acetate) Poly (vinyl alcohol) Poly (vinyl butyral)

[H+]

January 28, 2020 Global Business – Technical Resin 5 2. Properties and applications of Mowital®

January 28, 2020 Global Business – Technical Resin 6 2. Properties

§ Very good adhesion and film-forming properties § High bonding power § Excellent optical transparency § Good elasticity § Very good solubility in organic solvents § High compatibility with other § Very good processing § Fast solvent release

January 28, 2020 Global Business – Technical Resin 7 elasticity bonding power

transparancy compatibility

January 28, 2020 Global Business – Technical Resin 8 2. Applications

§ Coatings and primers § Printing inks for packaging § Films for laminated safety § Binders for ceramics and metal powders § Adhesives § Retroreflective coatings for traffic signs and road markings § Binders for protective helmets § Use in thermoplastic applications § 3D printing

January 28, 2020 Global Business – Technical Resin 9 inks coatings

corrosion protection food packaging

January 28, 2020 Global Business – Technical Resin 10 3. The excellent adhesion of Mowital®

January 28, 2020 Global Business – Technical Resin 11 3. The excellent adhesion of Mowital®

O O O O H O CH3 H Pr Hydrogen bonds

H H O HO O

Polar Surface

January 28, 2020 Global Business – Technical Resin 12 4. The good solubility of Mowital®

January 28, 2020 Global Business – Technical Resin 13 4. The good solubility of Mowital®

PVB shows a good solubility in: § Alcohols (ethanol, i-propanol, n-butanol…) § Esters (ethyl acetate, 3-methoxy-n-butylacetate, dibasic esters…) § Ethers (THF, dioxane, butyl glycol, 1-methoxy propanol-2, methoxy butanol, 1-methoxy-2-propanol, 3-methoxybutanol)

January 28, 2020 Global Business – Technical Resin 14 5. Molecular structure of Mowital®

January 28, 2020 Global Business – Technical Resin 15 5. Molecular structure of Mowital®

PVAc content residual PVA content acetal content 1-8% 11-27% 65-88%

January 28, 2020 Global Business – Technical Resin 16 6. Nomenclature of Mowital®

January 28, 2020 Global Business – Technical Resin 17 6. Nomenclature of Mowital®

® referring to the weight content of Mowital B 20 H residual –OH

PVOH PVAc Acetal stating the used aldehyde e.g. HH 11-14 1-4 82-88 S 14-18 1-4 78-85 referring to the molecular weight, the higher the number H 18-21 1-4 75-81 the higher the M (14 … 75) w T 24-27 1-4 69-75

January 28, 2020 Global Business – Technical Resin 18 7. Schematic overview of the Mowital® product portfolio

January 28, 2020 Global Business – Technical Resin 19 7. Schematic overview of the Mowital® product portfolio

o

O O l Degree of O Residual PVA acetalization content high low B 30 HH BA 55 HH B 60 HH SB 70 HH

B 14 S BA 20 S medium medium

B 16 H B 20 H B 30 H B 45 H B 60 H B 75 H

B 30 T B 60 T low high low medium high Solution viscosity

January 28, 2020 Global Business – Technical Resin 20 7. Schematic overview of the Mowital® product portfolio

Mowital B 75 ... Increasing molecular mass B 60 ... ( backbone)...

B 55 ...... leads to increased B 45 ... § solution viscosity B 30 ... § glass transition temperature § tensile strength and elongation B 20 ...

B 16 ...

B 14 ...

January 28, 2020 Global Business – Technical Resin 21 7. Schematic overview of the Mowital® product portfolio

Increasing content of residual PVOH ... Mowital B ... T ... leads to increased § polarity of the polymer B ... H § glass transition temperature § tensile strength B … S ... leads to decreased B ... HH § water resistance § solubility in non polar solvents (e.g. aromatic solvents) § compatibility with non polar polymers § elongation

January 28, 2020 Global Business – Technical Resin 22 8. Mowital® BA – mixed acetals

January 28, 2020 Global Business – Technical Resin 23 8. Mowital® BA

Acetal Vinyl alcohol Vinyl acetate

m

O O n o Mowital B… OH O O

CH3 CH3

m

l O O o n Mowital BA… O O O O OH

CH3 CH3

CH3

January 28, 2020 Global Business – Technical Resin 24 8. Mowital® BA

Mixed acetal à co-acetalisation of butyraldehyde and acetaldehyde

Acetaldehyde gives different characterisitcs to the side chain § Smaller side chain § More polar § Less flexible 90 84 80

C] 64 Higher glass transition ° 70 [ 60 temperature (Tg) 50 transition 40 30 Glass

Different CAS number temperature 20 § Mowital® B… 63148-65-2 10 ® 0 § Mowital BA ... 70775-95-0 MowitalMowital ®B 20B 20 H H MowitalPioloform® BA BL 2016 S

January 28, 2020 Global Business – Technical Resin 25 8. Mowital® BA – applications

§ Binder for printing inks (flexo and gravure) § Binder for pigment pastes (pigment chips) – ink industry § Co-binder for adhesives (e.g. dispersant for epoxy based systems) § Dispersing binder for metal pastes (screen printing) § Binder for anti-corrosion coating § Very good compatibility with organic solvents § Additive for extrusion e.g. the preparation of powder coatings (flow additive)

January 28, 2020 Global Business – Technical Resin 26 8. Mowital® BA – advantages

§ Exhibits low viscosity for the formulations (BA 20 S)

§ Higher Tg gives higher hardness and higher temperature resistance § Altered polarity gives better compatibility in some formulations § Provides special rheology in combination with given viscosity (BA 55 HH)

January 28, 2020 Global Business – Technical Resin 27