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Page 1
SIGMA PHENGUARD COATING
7435
(FORMER NAME: COLTURIET PHENGUARD COATING)
January 1998
Revision of May 1997
DESCRIPTION
Sigma Phenguard Coating is a two component high build amine adduct
cured phenolic epoxy coating.
PRINCIPAL
.
Second coat in the Phenguard tankcoating system.
CHARACTERISTICS
.
Excellent resistance to a wide range of organic acids, alcohol, edible
oils, fats (regardless of the free fatty acid content) and solvents.
.
Maximum cargo flexibility.
.
low cargo absorption.
.
Good resistance to hot water.
.
Certificate for aircraft fuel and fuel degradation (MIL-Std-1262), see
sheets 1884 and 1885.
.
Lloydís approval as a corrosion control coating, see sheet 1886.
.
Good application properties, resulting in a smooth surface.
COLOR AND GLOSS
Pink
BASIC DATA AT 68
F (20
C)
Mass Density
Approx. 14.1 lbs/gal (1.7 kg/ltr)
Solids content by volume
Approx. 66%
VOC (before thinning)
2.5 lbs/gal (300 gms/ltr)
Recommended dry film thickness
4.0 mils (100 microns)
Theoretical spreading rate @ 1 MDFT
1043 ft
2
/gal. (26.4 m
2
/ltr)*
Touch dry after
2 Hours *
Min. interval before overcoating
24 Hours *
Max. interval before overcoating
21 Days *
Full cure after
See curing table
Temperature Resistance (dry)
350
°
F (177
°
C)
Shelf life (cool and dry place)
Subject to reinspection after 12 months
Flashpoint (T.C.C.)
Base: 80
°
F (27
°
C)
Hardener: 80
°
F (27
°
C)
*use Hardener PH cure with 7435 base.
See Additional Data *
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Page 2
SIGMA PHENGUARD COATING
7435
Shipping Data
1 gallon mixed kit
5 gallon mixed kit
mix ratio: 7.3 : 1
mix ratio: 7.3 : 1
base: .88 gal in 1 gal can
base: 4.4 gal in 5 gal can
cure: .12 gal in 1 quart can cure: .6 gal in 1 gal can
*use Hardener PH with 7435 base.
RECOMMENDED SUBSTRATE
.
Previous coat of Sigma Phenguard coating; dry and
CONDITIONS
free from any contamination.
.
Substrate must be perfectly dry before and during application of
Sigma Phenguard coating.
.
Substrate temperature must be above 50
°
F (10
°
C) and at least 5
°
F
(3
°
C) above dew point.
INSTRUCTIONS FOR USE
Mixing instructions
ratio: base to hardener 93.2 : 6.8 by weight
base to hardener 88 : 12 by volume
.
The temperature of the mixed base and hardener should be above
59
°
F (15
°
C), otherwise extra solvent may be required to obtain
application viscosity.
.
Too much solvent results in lower sag resistance and slower cure.
.
Thinner should be added after mixing components.
Induction time
Allow minimum induction time before use:
10 min. 77
°
F (25
°
C)
15 min. 68
°
F (20
°
C)
20 min. 59
°
F (15
°
C)
30 min. 50
°
F (10
°
C)
Potlife
4 Hours at 68
°
F (20
°
C)*
Airless Spray
Recommended Thinner
91-92 (flashpoint 68
°
F (20
°
C))
Volume of Thinner
0-5%
Nozzle Orifice
Approx. 0.018 - 0.021 inch (0.46 - 0.53 mm)
Nozzle Pressure
2100 p.s.i. (approx. 150 at; 15 MPa)
Air Spray
Recommended Thinner
91-92 (flashpoint 68
°
F (20
°
C))
Volume of Thinner
0-5%
Nozzle Orifice
Approx. 0.078 inches (2 mm)
Nozzle Pressure
43 p.s.i. (approx. 3 at; 0.3 MPa)
Brush
Recommended Thinner
91-92 (flashpoint 68
°
F (20
°
C))
Volume of Thinner
0-5%
(01/98)
(2/5)

Page 3
SIGMA PHENGUARD COATING
7435
Cleaning Solvent
90-53 (flashpoint 86
°
F (30
°
C))
NOTE
: Nylon or Teflon type packings are available from pump manufacturer and are highly recommended. Reversible
tips are suggested.
NOTE
: Other equipment may be suitable. Contact the Sigma Technical Service Department for recommendations.
SAFETY PRECAUTIONS
This product is offered for sale and use only to PROFESSIONALLY TRAINED INDUSTRIAL PERSONNEL. It is NOT
FOR RESIDENTIAL USE. This product contains flammable solvents and/or other hazardous chemical ingredients and
must be used with caution. Observe all health and safety precautions as listed on the Material Safety Data Sheet during
storage, handling, application, drying and disposal. DO NOT ATTEMPT TO USE THIS PRODUCT WITHOUT
CONSULTING THE CURRENT "MATERIAL SAFETY DATA SHEET". Material Safety Data Sheets are available from
the Customer Service Department at Sigma Coatings (504-347-4321).
Minimum ventilation requirements
m
3
of air
ft
3
of air
per minute:
for 1 liter
for 1 gallon
Mixed paint
a. to reach 10% of LEL
60
8020
b. to reach TLV
761
101731
Thinner 91-92
a. to reach 10% of LEL
170
22725
b. to reach TLV
4447
594460
Thinner 90-53
a. to reach 10% of LEL 159
21254
b. to reach TLV
3510
469205
ADDITIONAL DATA
Film Thickness and Spreading Rate
Theoretical Spreading Rate m5/l
6.6
5.3
Dft in mils
Dft in
µ
m
4.0
100
5.0
125
Adequate ventilation is essential during application and during the curing period.
Max. D.F.T. without sagging with airless spray
8.0 mils (200 microns)
Min. D.F.T. for closed film with airless spray
2.0 mils (50 microns)
Max. D.F.T. when brushing
2.5 mils (60 microns)
(01/98)
(3/5)

Page 4
SIGMA PHENGUARD COATING
7435
Overcoating
Substrate
Temperature
104
°
F
(40
°
C)
86
°
F
(30
°
C)
68
°
F
(20
°
C)
59
°
F
(15
°
C)
50
°
F
(10
°
C)
Minimum
Interval
12
Hours
16 Hours
24
Hours
32
Hours
36 Hours
Maximum
Interval
7
Days
14
Days
21
Days
25
Days
28
Days
Under certain conditions other overcoating intervals may be feasible. In such cases specific guidelines
from Sigma Coatings are necessary.
Curing Table
Substrate Temperature
Minimum Curing Time
50
°
F (10
°
C)
59
°
F (15
°
C)
68
°
F (20
°
C)
86
°
F (30
°
C)
104
°
F (40
°
C)
14 Days
14 Days
10 Days
7 Days
5 Days
.
Minimum curing time of Sigma Phenguard tankcoating system before transport of cargoes with
note 4,7,8 or 11 : 3 months
.
For detailed information on resis tance and resistance notes, please refer to the latest issue of the
Cargo Resistance List.
.
For transport of methanol, a hot cargo cure is required and cannot be substituted by a service
period of 3 months with non-aggressive cargoes.
.
Adequate ventilation is required during application and curing.
.
The performance of the applied system strongly depends on the curing degree of the first coat at
time of recoating. Therefore overcoating time between first and second coat is extended in
comparison between second and third coat (see overcoating details).
Potlife
50
°
F (10
°
C)
59
°
F (15
°
C)
68
°
F (20
°
C)
77
°
F (25
°
C)
86
°
F (30
°
C)
95
°
F (35
°
C)
104
°
F (40
°
C)
6 Hours
5 Hours
4 Hours
3 Hours
90 Minutes
60 Minutes
30 Minutes
(01/98)
(4/5)

Page 5
SIGMA PHENGUARD COATING
7435
Worldwide availability
While it is the aim of Sigma Coatings to supply the same product on a
worldwide basis, slight local modifications can be necessary to comply
with legislation or special circumstances. In such situations an alternative
product data sheet is published.
Limitation of Liability
- The information in this data sheet is based upon laboratory tests we believe to be accurate and is intended for
guidance only. All recommendations or suggestions relating to the use of the products made by Sigma Coatings, whether in technical documentation,
or in response to a specific enquiry, or otherwise, are based on data which to the best of our knowledge are reliable. The products and information
are designed for users having the requisite knowledge and industrial skills and it is the end-user's responsibility to determine the suitability of the
product for its intended use.
Sigma Coatings has no control over either the quality or condition of the substrate, or the many factors affecting the use and application of the
product. Sigma Coatings does therefore not accept any liability arising from loss, injury or damage resulting from such use or the contents of this
data sheet (unless there are written agreements stating otherwise).
The data contained herein are liable to modification as a result of practical experience and continuous product development.
This data sheet replaces and annuls all previous issues and it is therefore the user's responsibility to ensure that this sheet is current prior to using
the product.
(01/98)
(5/5)