High Shrinkage Polyester
High shrinkage fibers and
bicomponent fibers need copolymer containing IPA 10%
to 40%. In the past, IPA powder must be added into
the TPA slurry before esterification. This is not
feasible with flexible CP design of one large
esterifier followed by several smaller CP for
different products. If IPA oligomer were produced
and added to TPA oligomer, the investment and
operating cost would be higher, the product would be
a block copolymer.
Glysil Chemicals invented new
technologies adding 50 to 60% IPA solution into TPA
oligomer. With Glysil dispersion technology, the 50 to
60% IPA solution is a clear liquid without solid. The
random copolymer contains IPA from 2% to 40% by mole.
The required carboxyl level in TPA oligomer is the same
as regular polyester.
Glysil Chemicals Inc. has complete
technology packages for 60-70% comonomers solution as
well as 50-60% IPA solution including recipe, equipment
design and purchase, installation, and operation. The
client can chose to install the equipment yourselves, or
ask an engineering company to install them under the
technical guidance of Glysil Chemicals Inc., or ask
Glysil Chemicals Inc. to install the equipment.