bioplasticsMAGAZINE_1205

Polyurethanes / Elastomers
PPC Polyol from CO 2
Jiangsu Jinlong-CAS Chemical Co., Ltd., a Chinese
company focusing on the reuse of carbon dioxide emissions
to create new chemical materials, has developed
a highly efficient catalytic system and innovative technology
to produce biodegradable aliphatic polypropylene carbonate
polyol (PPC polyol) by copolymerizing CO 2
with propylene oxide
(PO). This kind of polyol, that has been proven to show a
high reaction activity, may be widely used in the polyurethane
(PU) industry.
The company has developed the world’s first 10,000
tonnes per annum production line for PPC polyol. They
own the intellectual property rights, including 15 Chinese
patents concerning the catalyst preparation, polymerization
technology, reaction (production) equipment etc.
Polypropylene Carbonate Polyol
Polypropylene carbonate polyol (PPC polyol) is a kind of
colourless or yellowish viscous liquid with a rather complex
molecular structure and a molecular weight ranging from
2000 to 5000 Daltons. It is made with more than 30% by
wt CO 2
. PPC polyol shows a better hydrolysis resistance
compared to common polyester polyols, as well as physical
and mechanical properties superior to polyether polyols.
PPC polyol could replace PTMEG (Polytetramethylene
ether glycol) partially in superior artificial leather, that would
exhibit good touch and feel properties and light weight quality
– but also a certain toughness.
The new polyol has also proven that it can be used to
produce high adhesive strength coating materials (PU
adhesive) and may be widely used in cast polyurethane (CPU)
and thermoplastic polyurethane (TPU) elastomers.
PPC Thermoplastic Polyurethane (PPC-TPU)
PPC-TPU is a new kind of biodegradable polymer
copolymerized from PPC polyol, BDO (1,4-butanediol) and
MDI (Methylendiphenyldiisocyanat). It shows excellent
biodegradability with the final level of biodegradation (ISO
14855) being higher than 90% after 130 days.
The physical properties of PPC-TPU are similar to
traditional TPU. It shows excellent impact strength, tear
resistance and low temperature performance, as well as
excellent adhesion etc.
The product can be used for example for the production
of industrial packaging materials or as an impact modifier
additive for engineering plastics.
CH 3
CH 3
O CH 3
O CH 3
[ [
[
HO CH 2
CH O CH 2
CHO C O CH CH 2
O C O CH CH 2
OH
m - 1 n - 1
[
Polypropylene Carbonate Polyol
Blown film line producing a
PBS/PPC-TPU blend film
PPC polyol
PPC-TPU
Heat resistance sheet for
hot drink and food package
38 bioplastics MAGAZINE [05/12] Vol. 7