SleepTech Magazine / May - June 2017

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weight polyols within the material.
Polyether polyols account for
about 90% of the polymeric polyols
used industrially; the balance
is polyester polyols.
As is the case for all foam manufacturers
at almost all over the
world Turkish foam manufacturers
have also been suffering some
supply problems of this main input
of their manufacturing process.
Price hikes are also a big problem
for the industry. Depending on
this material for foam production
the industry is almost in a monopoly
of a main supplier. When it
suffers from any cause the entire
industry suffers because the producer
naturally reflects the loss on
prices, delivery and other factors.
Another class of polymeric polyols
is the polyesters. Polyesters are
formed by condensation or stepgrowth
polymerization of diols
and dicarboxylic acids (or their
derivatives), for example diethylene
glycol reacting with phthalic
acid.[5] Alternatively, the hydroxyl
group and the carboxylic acid (or
their derivatives) may be within
the same molecule, as in the case
of caprolactone. The example
below is an idealized structure
that could be obtained by reacting
pentaerythritol (a tetrol) with
gamma-butyrolactone.