Surface Coatings Association New Zealand Inc'

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Surface Coatings Association New Zealand Inc.

• 2000 Convention

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Real Coatings for the Future

• Introduction Tony Van Dyk
• Acrylic polymers Greg Percival
• Alkyd and acrylic polymers Jacqueline Hickman
• Additives Neal Haycock
• Biocides Kevin Rodin
• Colourants Chris Khoo
• Formulation and manufacture Tony Van Dyk

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Solvent based alkyd primer
ALKYD PRIMER

• Wood primer for timber
• Interior and exterior
• EC-07-98 VOC under 300 g/L
• NZPASS P18, AS3730.13 and NZ EC
• Low odour, low toxicity solvents
• White and colours off white

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Features
ALKYD PRIMER

• Performance more important than cost
• Paint should look good in the can
• Good water resistance
• Simple drier system (no lead)
• Touch dry in about 1-4 hours
• Broad spectrum preservative

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Technical Specifications
ALKYD PRIMER

• Long oil alkyd
• Volume Solids over 61
• 250g/L TiO2
• PVC 35-40
• Gloss 7 (5-20 at 60º)
• Pigments based on TiO2, Talc, Mica, CaCO3, ZnO,
  Flatting Agent

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Waterbased Acrylic Semigloss
ACRYLIC SEMIGLOSS

• Primed surfaces and direct to timber
• Exterior and interior
• VOC lt 100g/L, lower if possible
• NZ Environmental Choice EC-07-98
• NZPASS L169, AS3730.9, L27, AS3730.2
• Full colour range
• Least number of tint bases

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Features
ACRYLIC SEMIGLOSS

• Performance and cost important
• High Opacity white
• Good in-can appearance and application properties
  by brush and roller
• Exterior durability in NZ climate
• Dirt, stain, mark and mar resistance
• Adhesion to alkyds

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Technical Specifications
ACRYLIC SEMIGLOSS

• Volume Solids minimum 40 (40-44)
• 8 tinter, tint bases 8 short filled
• Coverage in 1 to 2-3 coats
• 400g/L TiO2 equivalent using opaque polymer in
  High Opacity White
• Semigloss 20-50 gloss, target about 40
• Open time over 6 minutes