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DESCRIPTION
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CORRO-DUR 561
is based on a unique blend of liquid epoxy polymer and aliphatic
polyamine curing agents which is able to displace water from
wet surfaces in order to make a permanent bond. The formulation
is solvent-free to ensure safety and maximum technical performance.
* Kevlar™ fibers are incorporated for reinforcement and viscosity
management to achieve high application rates and excellent film
build - even underwater!
CORRO-DUR 561 provides permanent
protection even under the most adverse conditions. When manufactured
for Nuclear service it is qualified for Service Level l use
with above or below water application. The formula is uniquely
field-friendly and uses advanced low toxicity ingredients.
*trademark E.I.DuPont Nemours Co.
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USES
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ANTICORROSIVE
COATING
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Splash
zone, Spot repairs above and below water, Heavy duty protective
coating for steel and concrete. |
| REPAIR
COMPOUND |
Patching,
leak sealing, etc. under all conditions |
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WASTEWATER
TREATMENT
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Reinforcing,
smoothing and protecting worn concrete damaged by exposure
to chemical or municipal waste systems. |
| ADHESIVE
MORTAR |
In dry, wet or submerged conditions. |
| FAIRING
COMPOUND |
Rough
steel and concrete exposed to erosion. |
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APPEARANCE
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COLORS
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Black, White, Gray,
other colors available ( slight yellowing ) |
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FINISH
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Slight texture |
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PHYSICAL PROPERTIES
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VEHICLE TYPE
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Epoxy/Aliphatic
Polyamines |
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PIGMENTATION
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Color/ Inert/ Fibrous
reinforcement |
| THINNER |
Not required |
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CLEANER
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M.E.K or Lacquer
thinner |
| MIXING
RATIO |
1.0/1.0 (Volume) |
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INDUCTION TIME
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Not required |
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POT LIFE
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Approx. 40 minutes/80°F
(27°C) |
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SOLIDS BY VOLUME
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100% |
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THEO.SPREAD RATE
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80sq.ft./gal.@20mils
; 53 sq.ft./gal. @30 mils 2sq.m/1 @.5mm; 1.3 sq.m/l @.8mm |
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DRY TIME (TOUCH)
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Approx.4 Hrs/80°F
(27°C) |
| DRY
TIME (HARD) |
Approx. 14 Hrs/80°F
(27°C) Max. cure in 7 days |
| SHORED
(HARDNESS) |
80+ |
| APPLICATION
METHOD |
Trowel, Straight
edged spreader, Mitts, etc. |
| SHELF
LIFE |
12 Months minimum |
| VOC |
Zero |
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SAFETY INFORMATION
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| FLASH
POINT |
Over 200°F
or 93 °C (Closed Cup) |
| STORAGE
CONDITIONS |
Normal , Freezing
OK |
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SURFACE
PREPARATION
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Underwater
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Remove marine biological settlement
and corrosion by high pressure water jetting or similar
methods with or without abrasive injection. Conventional
air/abrasive blasting works well at shallow depths however
efficiency falls off sharply below about 10ft. Hand held
power tools such as grinders or needle guns will give good
results if applied conscientiously in small areas but will
be inadequate in large areas. Plan to apply the CORRO-DUR
561 within 30 - 45 minutes of surface preparation to minimize
rerusting or initial settlement of fouling which can interfere
with initial adhesion. Conventional abrasive blasting using
air abrasive or centrifugal blasters are preferred methods
of surface preparation in most cases where oily or greasy
contamination is not a problem.
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Above water
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Preparation requires similar
high pressure water blasting or dry abrasive blasting to
yield a firm, granular surface free of loose contamination.
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MIXING
PROCEDURE
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CORRO-DUR 561
is supplied in two gallon (7.6 liters) kits of one gallon (3.8
liter) each of epoxy and curing agent. Whenever possible these
components are made in contrasting colors for example yellow
base plus black curing agent to yield an olive green mixture.
This system allows the mixers to see at a glance if " hotspots"
of unmixed epoxy base or curing agent which will never cure
are still present. Remove equal quantities of base and curing
agent from their cans and place them side by side on a flat
sheet of plastic, fiberboard, etc. Mixing is easily accomplished
by folding the components into each other using a spatula or
piece of wood. Once mixing begins there will be about 40 minutes
of working time available at 80°F (27°C). This time can be extended
by keeping the components and mixture cool. Send mixed material
underwater as soon as possible rather than leaving it on a hot
deck.
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APPLICATION
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Underwater
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Take the mixed CORRO-DUR
561 underwater in a car or bucket, it will be
helpful to have some method of holding the container such
as a hook or magnet only the structure especially if visibility
is poor and a latern must also be carried. Applicators such
as broad putty knives or plastic straight edged glue spreaders
work well on most surfaces. Painters mitts will work well
on small diameter tubular sections such as risers. CORRO-DUR
561 is resistance to the effects of wave application
during curing and will be found it be easier to apply than
traditional 'splash zone' compositions and much less messy
than lower viscosity underwater surfaces and expensive equipment
should be protected using plastic suits or sacks to cover
exposed surfaces.
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Above water
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Apply using an appropriate
tool such as a spreader or short, stiff brush if the surface
is especially rough.
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TEMPERATURE
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CORRO-DUR
561 may be applied in
temperatures as low as 45° (7°C) - curing will be slow, however
the viscosity of the material will still be workable. Temperature
will exert a considerable influence on the rate of curing of
chemically cured coatings such as CORRO-DUR
561. In broad terms expect each 10°C, (18°F), rise
or fall in temperature to half or double dry times and pot lives.
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TRANSPORTATION
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USDOT, IATA & IMO "Non-Regulated"
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