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hhຫໍສະໝຸດ hWaterborne 2K Epoxy/AmineSystems for Applications on Concrete and Anti-corrosive paint
Schematic Structure of Epoxy/Amine Network
What are the trends for HDC
Impact from pending legislation Strong move towards high solids Waterborne system
Issues
Cost High performance VOC legislation Health & safety legislation
Top coat 1
Resydrol AY 466W/45WA
Oxidative acrylic modified alkyd Oxidative drying, drier required High gloss and excellent durability Dust free time is 4-5 hours, gloss is 92 at 600
short weather resistance test-QUV SE UVB lamps - 312 nm
90 85 80 75 70 65 60 55 50 45 40 35 30 25 20
VAX 6267w VSC6265w AY466w AY241w VTW1252
in %
gi nn
0
Replacing solvent base
Alkyd & modified alkyd i.e styrenated, phenolic, urethane & epoxy ester
One component air dry. Ease for repair and maintenance Low to medium expectation on anti corrosion Application: General steel work
Duroxyn VEF 2406w/45WA
• Cationic epoxy ester • 45% solid, 9.7% methoxy methanol • Dust free time=20 mins, SST is 360 hrs at 40 micron DFT
Resydrol VAX 6267w/40WA
Intermediate
WFT=150-400 micron (40-300)
Top coat
WFT=80-200 micron (40-100)
Corrosive environment
Epoxy/polyamide zinc, epoxy/amine or silicate zinc
Epoxy/polyamide, epoxy/amine
Primer 1 –High film thickness
Resydrol VAZ 4200w/45WA
• Oxidative drying, acrylic urethane mod. Slightly thixotropic • 45% solid, 6.9% butyl glycol • Drier required • Dust free time=1-2 hours, SST=240 hr at 40 micron DFT • Suitable for airless spray thick layer paint.
H EP O O + H N-N
H EP H O
H N-N OH
H H
Characteristics of 2K Epoxy/Amine Systems Excellent chemical resistance Very good adhesion to many substrates Low volume shrinkage upon cure Excellent mechanical properties Very good anticorrosion protection Drawbacks: Yellowing and chalking
Heavy Duty Coatings
Protective coatings Marine coatings Container paints
Prepared by David Tan Aug 2005
Marine and Protective Coatings
Marine Coatings
Ships Yacht coatings
Chlorinated rubber Vinyl Alkyd
* WFT:wet film thickness ( ):dry film thickness
What can we offer!
Water borne air dry modified alkyd and epoxy modified •For anti corrosion •For top coat Water base 2K epoxy and hardener •For anti corrosion 2K acrylic •For top coat Additives •Dispersing and wetting agent •Defoamer •Flow and leveling
One component water base modified alkyd & epoxy ester for heavy duty coatings
One component water base mod alkyd & epoxy ester for heavy duty coatings
Top coat 2
Resydrol AY 241w/40WA
Oxidatively drying alkyd acrylic copolymer Suitable for primer and top coat Dust free time is 20 min, gloss is 86 at 600, SST is 96 hours (40 micron, DFT)
Viacryl VSC 6265w/40WA
Solvent free copolymer of styrene and acrylic ester Very fast dry water base paint, excellent yellowing resistance Dust free time is 15-20 min, gloss is 83 at 600, SST is 50 hours Can be used to enhance drying of alkyd emulsion i.e Ay 466. Suitable for primer and top coat
• Epoxy acrylic hydrid • Dust free time=20 mins, SST is 70 hrs at 40 micron DFT • Drier required • Excellent adhesion on non ferrous substrates i.e galvanised, Al and steel
Resydrol VAY 6100wsca/42WA
• Oxidative drying, urethane thixotropic, acrylic mod alkyd as aq emulsion • 42% solid • Drier required • Dust free time=60 min, SST=240 hrs at 40 micron DFT • Suitable for higher dry film thickness
Resydrol VAF 6111w/60WA
Oxidatively drying High solid top coat Dust free time is 3-5 hours, gloss is 92 at 600
Daotan VTW 1252/42WA
PUD modified with drying oil Drier required Fast drying and harder dry film Dust free time is 35 min, gloss is 90 at 600
APPLICATION METHODS
By spray Airless Air Assist Hot Spray By brush By roller
Typical protective coatings according to their binder composition Primer
WFT=80-150 micron (40-70)
Types of Coatings
Solvent based epoxy High Solids Epoxy Solvent-free epoxy Waterborne epoxy Solventborne 2K acrylic Solventborne thermoplastic acrylic Thermoplastic Acrylic beads Waterborne 1K acrylic Alkyds Vinyls Zinc silicates Epoxy silanes
Protective Coatings
Industrial structures and infrastructure
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Storage tanks Pipelines Jetties, ports & cranes Steel structures Industrial floors Containers Offshore platforms & oil rigs.