聚酯树脂涂料技术培训

Molecular weight from 14000 - 25000 Tg from 40 - 105° C Excellent adhesion to metallic substrate High flexibility
Good corrosion and chemical resistance
CO-PY-RT-TS 2 Technical Training Basic
Slide 1
creating essentials
Dynapol® L, LH Copolyesters for Can Coating
Dynapol® = registered trademark of Degussa AG
55 56 55 63 70 63 61 61 61 61 65 62 65
2004-10-01 CO-PY-RT-TS 2 Technical Training Basic Slide 12
creating essentials
Properties of polyesters
Solubility
molecular weight ( low better than high ) functionel groups ( high better than low ) monomers ( branched better than linear )
2004-10-01 CO-PY-RT-TS 2 Technical Training Basic Slide 4
creating essentials
1
O OH + OH - H2O
HO
R
R
2
O OH
Polycondensation
O OH R1 O R2 OH R1 = aliphatic, cycloaliphatic R2 = alphatic, cycloaliphatic, aromatic
COLORANTS
CROSSLINKERS
+
RESINS
2004-10-01
=
Binder Systems
Solvents
Additives
CO-PY-RT-TS 2 Technical Training Basic Slide 3
creating essentials
Polyester Resins for the coating industry
Байду номын сангаас
DYNAPOL® Polyesters for Packaging
Why Polyesters ? - taylor made products with a wide range of properties (melting point, glass transition temperature, amorphous / crystalline / partially crystalline) - good adhesion to different substrates (metal- and polymer-foils), even after extreme deformation - excellent balance of hardness and flexibility - good processability - resistance to yellowing during processing - completely free of taste - environmentally friendly (low voc or 100% solid application as melt or powder) - customer friendly (no estrogenic activity, low migration) - PVC-free, BADGE-free - suitable for food contact, most DYNAPOL grades are FDA approved
L 860 L 850 L 658 L 651 L 490 L 411 L 210 L 208 L 206 L 205 L 952 L 912
Glass transition temperature ° C
Molecular mass
2004-10-01
CO-PY-RT-TS 2 Technical Training Basic
2004-10-01
CO-PY-RT-TS 2 Technical Training Basic
Slide 10
creating essentials
Application Fields for DYNAPOL Polyester
• Coil Coatings
Architectural top coatings (exterior and interior) Back coatings Primer for galvanized steel and aluminum Appliance housing
2004-10-01 CO-PY-RT-TS 2 Technical Training Basic Slide 6
O
creating essentials
2004-10-01
CO-PY-RT-TS 2 Technical Training Basic
Slide 8
creating essentials
• Can Coating
External basecoat and clear varnish Internal coating
side seam powder
2004-10-01
CO-PY-RT-TS 2 Technical Training Basic
Slide 11
creating essentials
2004-10-01 CO-PY-RT-TS 2 Technical Training Basic Slide 9
creating essentials
Dynapol Polyester grades and application
• Dynapol L
• Dynapol LH • Dynapol P • Dynapol LS
creating essentials
Degussa B-CO Crosslinkers Performance Resins Polyesters Colorants Support
Business Unit Coatings & Colorants
2004-10-01 March 15, 2004
• OH-functional PES: excess of alcoholic component • COOH-functionel PES: excess of carboxylic component • lineare PES: only bifunctionel monomeres • branched PES: use of higher functionel monomeres •important PES-properties : acid number, OH-number, mol.weight, meltingpoint, glastransition - temperature , degree of branching , cristallinity, viscosity •stirring of PES-properties: ratio COOH/OH, monomer choise
Primer for hot dip galv. Steel
Dibasic ester mixture (DBE)
Metal decorating enamels
Viscosity number (cm 3/g)
Hot laminating adhesives
L L L L L L L L L L L L L
high-molecular weight, solid resins coil coating, can coating, printing inks medium-molecular weight, dissolved resins coil coating, can coating high-molecular weight, solid resins can coating (powder) elastification resin
raw material for coil- and cancoating
2004-10-01
CO-PY-RT-TS 2 Technical Training Basic
Slide 16
creating essentials
Properties of Dynapol L
L 860 L 850 L 658 L 651 L 490 L 411 L 210 L 208 L 206 L 205 L 952 L 912 0 20 40 60 80 100 120 0 5000 10000 15000 20000 25000
Slide 14
creating essentials
Metal Adhesion by Cooperative Dipole Bonds
2004-10-01
CO-PY-RT-TS 2 Technical Training Basic
Slide 15
creating essentials
DYNAPOL L
Compatibility
molecular weight ( low better than high ) monomers ( aliphatic , branched ) functionallity ( high better than low )
2004-10-01
CO-PY-RT-TS 2 Technical Training Basic
912 952 205 206 208 210 411 460 490 651 658 850 860
105 70 67 67 65 63 47 43 40 40 40 40 40
15000 18000 15000 20000 20000 20000 16000 16000 15000 15000 20000 15000 15000
Slide 17
creating essentials
Product range DYNAPOL L-grades
COIL COATING CAN COATING Fields of application 8)
Grades
12)
Characteristic values 1) 2)
Solubility 6)
Slide 13
creating essentials
Who is our direct Customer ?
DYNAPOL ® Sales
Lacquer Formulator
Coater
Converter
Enduser
Converter Filler
2004-10-01
CO-PY-RT-TS 2 Technical Training Basic
Synthesis of polyester
polycondensation (brutto reaction)
O HO C O C OH O HO C R1 - (2n-1) H2 O ( c ondensation) O C O R2 n R
1
+
n
HO
R
2
OH
O H n
• catalyst : acids or base
2004-10-01
CO-PY-RT-TS 2 Technical Training Basic
Slide 2
creating essentials
Typical composition of high performance 2-component industrial coating systems
DYNAPOL® - Saturated polyesters VESTICOAT® UB - Blocked polyesterpolyurethane systems for can- and coil coatings with flexibility and hardness
HARD. BUT FLEXIBLE.