Exact(4)
The maximum yield of resin and dye is obtained by gathering stick lac (i.e., the twigs with their living inhabitants) in June and November.
The maximum yield of resin was 63%%.
The maximum yield of resin was 63 % (Table 5).
The yield of resin was higher than phenol content in the liquid tar, possibly due to the presence of other groups similar to phenols that are easier to access and reacted with formaldehyde to form the resin, resulting in higher yield of resin.
Similar(4)
The results (Fig. 3) indicate that the relative yields of saturates and aromatics declined slightly, on the contrary, the yields of resins and asphaltenes increased after desulfurization.
Thermal gravimetrical analysis results showed that the carbon yield of phenolic resin increased with the addition of Ni catalyst.
A statistical model predicted that the highest conversion yield of novolac resin would be greater than 95% at the optimized reaction conditions.
Various reaction parameters including phthalic anhydride to oil molar ratio, catalyst concentration, reaction temperature, reaction time and rate of stirring were optimized to obtain the optimum yield of alkyd resin by using alcoholysis polyesterification method.
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