Commercial high ammonia (HA) latex
concentrate was obtained from a Malaysian
supplier. The waterborne polyurethane
dispersion (Envithane 9000) was supplied
by Dongsung Chemical Co. Ltd, Korea. The
composition and specification of the PUD is
as shown in Table 1.
Aqueous dispersions of sulphur, ZDEC,
ZMBT, Wingstay L®, Diphenylguanidine, zinc
oxide and sodium silicofluoride were prepared
by ball milling under standard conditions.
The potassium oleate solution was prepared
by adding oleic acid to the hot potassium
hydroxide solution.