Abstract:
Pentaerythritol was initially developed as a raw
material to make explosive. But, later, this was mainly
used in the manufacture of alkyd resins. The production
of pentaerythritol showed rapid growth due to
the tremendous increase of alkyd resin production.
Pentaerythritol is one of predominant polyhydric
alcohols used in alkyd resins. And the high functionality
of pentaerythritol attracted wide interest
because it gives many advantages. Alkyd resins containing
Pentaerythritol tend to have higher viscosities
and molecular weights, dry more rapidly, and give
coatings of greater hardness with lower flexibility,
better gloss and gloss retention, better heat and yellowing
resistance, better chemical resistance, better water
resistance, and better exterior durability than other
polyhydric alcohol alkyds. In paints, pentaerythritol
type also show greater anti sagging at equal brushability
and flow.