A total of 6.6 g of the gum rosin
was dissolved in 100 mL of diethyl ether in a reaction flask.
Moreover, since most gum rosin
is exported through the port of Huangpu, the price and stock of gum rosin
reflect general domestic market trend.
Among three types of investigated tackifiers, gum rosin
exerted most severe effect on vulcanization, while petroleum and phenolic resins exhibited comparable degree of cure interference.
Peters said that compared to 2010 and 2011, raw material prices have been relatively stable, but he also pointed to pigment intermediates and gum rosin
as areas of concerns.
stocks are relatively low for this time of year, which is very reminiscent of 2011," Ms.
Last but not least, it looks like gum rosin
is going up again, with double-digit increases in the last six weeks, which will have an effect of phenolics resins again.
We also need to be mindful of the potential impact of global weather conditions on such raw materials as gum rosin
, ethanol and vegetable oils."
It holds the key to many critical ink chemicals like certain base chemicals, pigments, gum rosin
and an increasing number of specialties, such as additives for UV curing.
prices have recently softened after peaking at record levels in the first two quarters of 2011.
"Rosin resin became a problem in 2010, when the price of Chinese gum rosin
tripled over the course of the year.
This, together with production and environmental restrictions, is having a serious impact on availability and costs of materials such as carbon black, gum rosin
, vegetable oils and various pigments, which are key cost drivers for publication inks.
Parisi pointed to gum rosin
, and its impact on the ink industry.