Reliance Industries Limited (RIL), India's
largest private sector company produces PTA at
it's petrochemical complexes.
With 2,050 KTA capacity, RIL is 8th largest producer of PTA in the world. RIL
has been able to achieve this position in less
than 10 years. RIL's world class manufacturing
technology and strategic interest in this business
are the main reasons for this growth.
PTA was first introduced in 1965 as an alternative
feedstock to Dimethyl Terephthalate (DMT) for
the production of Polyester. By end of 1999, almost
85% of total world production was based on PTA
and this continues to grow.
Purified Terephthalic Acid (PTA) is the preferred
raw material for Polyester. Polyester was first
introduced in 1951 and today it finds applications
in all walks of life. Clothing, furniture, upholstery,
containers, films are some of the major applications
of Polyester.
ISO Accreditation
RIL believes in installing and maintaining it's
manufacturing sites at world class level. Both
the manufacturing complexes have received ISO
9002 accreditation. RIL's Hazira complex has received ISO 14000
accreditation in 1999 and also has been awarded
5 star rating from British Safety Council for
consecutive 3 years.
DuPont Technology
The technology for PTA has been licensed from
DuPont (earlier ICI). This world class technology
enables production of the highest quality. The
level of automation installed in Reliance PTA
plants ensures total quality control. Our production
sites have already installed Advanced Process
Control (APC) and Computer Integrated Manufacturing
(CIM), which keep a constant watch on product
quality and take on-line corrective actions.
APPLICATIONS:
1. Polyester
PTA is a basic raw material for Polyester. PTA
reacts with MEG to produce polyester.
A) Textiles
PTA derivative, Polyester, is the largest synthetic
fibre used in textiles. With more than 18 million
tons of fibre production in a year, Polyester
is second only to Cotton 20 million tons). With
cotton availability being restricted, the growing
demand of fibres is largely met by Polyesters.
Polyester Filament Yarn can be directly used for
textiles, while Polyester Staple Fibre is blended
with other fibres before being drawn into a yarn.
B) Packaging
Polyethylene Terephthalate (PET) Film, sheet
and moulded containers for food packaging continue
to grow in popularity. Lightweight soft drink
containers based on PTA are crystal clear and
shatterproof. Boil-in-bag pouches use polyester
films, while retortable and microwave packages
use coextruded films and containers. In addition,
blister packaging for fresh and prepared food
products is often based on PTA. The success of
PET recycling efforts makes PTA the raw material
of choice for new food packaging ideas.
C) Furnishings
Staple Fibre made from Polyester is also used
in furniture applications like cushions, upholstery
etc. Continuous development in this fibre segment
has opened a very good opportunity in this segment.
D) Consumer Goods
Apart from uses in Textiles, Furnishings as detailed
above, PET is also used in films for audio and
video recording tapes. Sun-Control films are also
based on PET. PET has also become the primary
container resin for carbonated soft drink bottles
and other applications.
2. Coatings
PTA is used in the polyester component of environmentally
compliant coating resins, including water soluble
and powder systems. Their inclusion formulation
helps determine the weatherability, corrosion
resistance, flexibility and impact resistance,
as well as other performance characteristics of
the coating in either household or industrial
use.
3. Resins
PTA also finds applications in unsaturated polyester
resins which are used as engineering plastics.
The list of applications does not end here. Continued
development in all above segments is based on
Polyester resin for which PTA is the natural raw
material.
SPECIFICATION:
(Finished Product)
| Sr.No. |
Parameters |
Method
No |
Unit |
Specification
Limits |
| 1 |
Appearance |
PTAH/QCD/3501 |
-- |
White
free flowing Crystalline Powder free from
visual contamination |
| 2 |
Powder
Colour ‘Y’ |
PTAH/QCD/3502 |
-- |
11.0
max. |
| 3 |
4-Carboxy
Benzaldehyde |
PTAH/QCD/3503 |
wt.
ppm |
20
max. |
| 4 |
p-Toluic
Acid |
PTAH/QCD/3504 |
wt.
ppm |
150
max. |
| 5 |
Water |
PTAH/QCD/3505 |
w/w
% |
0.15
max. |
| 6 |
Millipore |
PTAH/QCD/3506 |
-- |
0.95
min. |
| 7 |
Colour
in 2M KOH |
PTAH/QCD/3507 |
HAZEN |
10
max. |
| 8 |
b*
- Colour |
PTAH/QCD/3508 |
-- |
0.80
+ 0.40 |
| 9 |
Ash |
PTAH/QCD/3509 |
wt.
ppm |
8
max. |
| 10 |
Total
Metal content |
PTAH/QCD/3510
&12 |
wt.
ppm |
6
max. |
| 11 |
Individual
metals-Cobalt
Manganese
Iron
Chromium |
PTAH/QCD/3510
&
3512 |
wt. ppm
wt. ppm
wt. ppm
wt. ppm
|
-
max.
1.0
max.
0.5
max.
1.0
max. |
| 12 |
Calcium
Magnesium
Sodium
Copper
Nickel |
PTAH/QCD/3510
&
3512 |
wt.
ppm
wt.
ppm
wt.
ppm
wt.
ppm
wt.
ppm |
1.0
max
1.0
max.
1.0
max.
-
max.
1.0
max. |
| 13 |
Acid
number |
PTAH/QCD/3513 |
mgKOH/gm
KOH/gm |
675
+ 2 |
| 14 |
Benzoic
Acid |
PTAH/QCD/3504 |
wt.
ppm |
30
max. |
| 15 |
MPS |
PTAH/QCD/3508 |
Micron |
95
+ 15 |
| |
|
PTAH/QCD/3515 |
Micron |
105
+ 15 |
| 16 |
UV
Transmission @ 340 |
PTAH/QCD/3514 |
% |
91.0
min |
Notes :
-
The metals listed in
Sl. No. 12 are analysed only if the ash content
exceeds 6 ppm.
-
Routinely MPS will be
analysed by Laser technique, however in case
of non-availability of instrument, same can
be analysed by mechanical sieve shaker.