Parylene is the
trade name for a
polymers marketed by
Parylene N is a
a dimer synthesized
properly known as
made from p-xylylene
in several steps
Parylene is a common
generic name for a
unique series of
polymers based on
three most common
types of parylene
are referred to as:
Parylene N, Parylene
C, and Parylene D.
In actual usage,
Parylene C is the
type of parylene
used for almost all
applications and as
such is usually the
type of material
basis for the
parylene family is
N. Parylene C and D
are created by the
substitution of a
molecule (C) or two
molecules (D). See
There are a number
of derivatives and
isomers of Parylene,
but only a few are
e.g., Parylene N,
Parylene C and
Parylene D. This
the molecule which
Parylene N. Heating
paracyclophane in a
partial vacuum gives
rise to a diradical
deposited on a
surface. Until the
"monomer" comes into
contact with a
surface it is in a
gaseous phase and
can access the
surface. It has a
variety of uses. In
deposition at low
produces a thin,
Parylene coating has
very high electrical
penetration. It is
used as a dielectric
measurement. It has
uses in preserving
- Hydrophobic, chemically resistant coating with good barrier for inorganic and organic media, strong acids, caustic solutions, gases and water vapor.
- Outstanding electrical isolation with high tension strain and low dielectric constant
- A biostable, biocompatible coating, FDA permission
- micropore and pin get-free starting from 0.2 µm layer thickness,
- Thin and transparent coating with high gap freedom of movement, suitably for complex arranged substrates also on edges.
- Coating without temperature load of the substrates, coating takes place at ambient temperature in the vacuum.
- Highly corrosion resistant.
- Completely homogeneous surface.
- Thermally stable up to 220 °C, mechanically stable from -200 °C to +150 °C.
- Low mechanical stresses.
- Resistant to friction.
- Very low permeability to gases.
- High electrical impedance.
- Dielectric cating (e.g. Cores/coils).
- Hydrophobic coating (e.g. biomedical hoses).
- Barrier layers (e.g. for filter, diaphragms, valves).
- Microwave electronics.
- Sensors in rough environment.
- Electronics for space travel and military.
- Corrosion protection for metallic surfaces.
- Reinforcement of micro-structures.
- Abrasion protection.
- Protection of plastic, rubber, etc. from harmful environmental conditions.
- Reduction of friction (e.g. For guiding catheters, also acupuncture needles).
- Dissolving deuterated polyethylene for making nuclear targets.
- MIL-I-46058C, Type XY approved
- FDA approved -- USP XXII, Class VI bio-compatibility rating
- UL listed
- Completely pin-hole free barrier coating
- Fully conformal on any type of surface material or design
- Inert transparent polymer
- Meets NBC requirements (AR70 / AFR80-38 / Navinst 3400.2)
- Barrier to oxygen, moisture, chemicals, solvents, and carbon dioxide
- Thermal mechanically stable between -200ºC and 150ºC
- Extremely high dielectric 5,000 volts per 0.001" minimum
- Excellent adhesion properties
- Low stress coating that does not form sites prone to crack initiation
- Low / minimal impact on package cooling
- Barrier to ionic and moisture species
- Chemical and fungal resistance
- Non-contaminating coating and coating process -- no solvents, catalysts or other by-products are introduced during coating
- Entire process is accomplished at room temperature, alleviating temperature stress on parts
- Particle encapsulation / immobilization
- No outgassing (NASA approved)
- High reliability - Suitable for military or commercial applications
- Light weight - compared to other coatings
- Stress-free coatings - Sensitive circuitry unchanged by coating
- Low coefficient of friction - Use as a dry film lubricant
- Transparency - Thin films can be of optical quality
- Outgassing - Virtually none
- Outstanding barrier - Very low permeability to moisture and gases
- Fungus and bacteria resistance - Excellent
- Mechanical - High tensile and yield strength
- Radiation resistance - Suitable for space applications
The most widely used dimer, providing a useful combination of properties, plus a very low permeability to moisture, chemicals, and other corrosive gases.
Provides high dielectric strength and a dielectric constant that does not vary with changes in frequency. Best selection where greater coating protection is required.
Maintains its physical strength and electrical properties at higher temperatures.