Architects memo no.
32: September 1983
Resene Quick Dry acrylic primer/undercoat
Resene Architects Memos have indicated that, theoretically at
least, waterborne acrylics should be excellent materials for wood primers.
This is based on the well documented evidence that acrylics maintain
their flexibility over a much longer term than do oil-based paints.
In the United Kingdom, in fact, acrylic wood primers have made an appearance
and an appropriate British Standard has been written to cover them.
In New Zealand the concept has remained at the 'theoretical' level
because the large expanses of timber used demand a lot from a primer,
and acrylics have generally been unacceptable because of either poor
flow, grain-raising, poor stain-resistance, and low film build.
Resene has looked at the concept of acrylic wood primers for
over 15 years, evaluating different methods and raw materials. Nothing
stands still however, and the past five years have seen some useful
raw materials emerge; materials such as high-solids polymers, flow agents,
adhesion promoters, stain inhibitors etc. By judicious formulation using
these latest technical advances, Resene has developed a primer
that realises the potential of acrylics as primer medium whilst overcoming
the drawbacks mentioned earlier.
The product also has some very desirable features other than the convenience
of being waterborne and fast drying - for instance it has exceptional
durability so can be left uncoated for long periods (up to 6 months
depending on environment); it is equally at home over bare timber and
sound paint so touch up areas end up with a uniform surface;
it does not activate wax in reconstituted timber products; it is suitable
for Totara and Matai giving, at last, a quick-drying, flexible primer
for these timbers; it has a low sheen surface with excellent enamel
hold-out making it suitable for use as an undercoat; it can be overcoated
with either acrylics or enamels.
We believe that this product is a significant advance in technology
and will be readily accepted by the trade.
NB: Ever increasing quality standards have meant Resene
Quick Dry is today New Zealand's leading acrylic primer undercoat.
Recent advances have given Resene Quick Dry greater flow (reduced brush
marks) and superior sandability.
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