over 40 million pairs of lenses are treated per year with this product which has: HYDROPHOBIC, HYDROPHILIC, OLEOPHOBIC AND RAYOPHOBIC PROPERTIES
Super Scratch Guard is a simple and easy way to apply a film of a complex siloxane polymer on a lens surface. This ultra slick film, resistant to most chemicals, has full hydrophobic and hydrophilic properties and will let objects slide off the lens surface rather than hooking on to it and induce scratches. This film is very durable and totally resistant to solvents attacking it. Through the anti static charge the lens surface will not attract any dust and dirt. The anti fog properties will dissipate fogging up within seconds. Above all the treatment is the easiest to apply and can be done in any in house office.
Polysiloxanes
An excellent and full description of Polysiloxanes can be found at: http://www.eng.buffalo.edu/Courses/ce435/Polysiloxanes/
Polysiloxanes are good for non-medical applications as well. For instance, the polymer is hydrophobic and is a good water repellant, as well as being slippery so other substances will not stick to it either. Also, since it is permeable to gases while being impermeable to particles, it is a good protective coating. The bonding is strong and so the polymer can be used as a good adhesive as well. These three applications are also enhanced because of the flexibility of the polymer. Since it has the ability to bend and twist, there wont be as much cracking and chipping going on in the application.
Non conductivity is one
of the various advantages that plastics possess generally. However, there
are cases where this advantage turns to be a defect that static electric
charge accumulates on the surface of plastics. Static electricity gives
troubles such as electric shock, dust attraction and sticking of films.
Antistatic agents are used to
solve the problems as related above by giving antistatic properties to
plastics without altering the general mechanical properties of the
plastics. Antistatic agents have in their
molecules both hydrophobic and hydrophilic radicals. Practically, the
hydrophobic radicals turn to the surface of plastics, while the
hydrophilic radicals turn to the air attracting the moisture in the
atmosphere. The static charge accumulation in
plastics is dissipated, through the conductivity of water absorbed by
antistatic agents. At the same time, antistatic
agents show the action of reducing the accumulation of frictional static
charge. Thus, antistatic effect is obtained.
OMS Optochemicals is the first and only company that had developed
already in 1991 an optical coating made with polysiloxanes that
incorporates both hydrophobic and hydrophilic properties. A lens can be treated in two different ways. By using the
primer we are roughing up the surface microscopically with a chemical
product to get a maximum adhesion of the protective layer. The Super Scratch Guard can also be applied without using
the primer. The primer is a caustic solution that's attacks the surface
of a CR39 lens and roughens it up microscopically. The lens is inserted into
the primer solution for 10 to 15 minutes, then removed and well washed with
fresh water. The lens is now ready to be treated with the Super Scratch
Guard. The Super Scratch Guard should be stored in a plastic Tupper ware type
container with a snap on lid to provide an air tight environment. This is
very important to keep the container closed at all time when not in use as
the solution can spoil within 24 hours if not covered and exposed to air. Immerse the lens into the solution (at room temperature) while holding it
vertically or at a slight angle for not more than one second and retrieve.
If a double or triple coat is required repeat once or twice more. Shake off
the few left over water droplets or blow the off off with air. To dry use a fresh paper tissue and wipe from the centre on outwards
whiule rotating the lens. That will prevent uncured material from being
wiped back on the surface where it will hard to remove. Never use the the
same tissue for another lens. Super Scratch Guard should always be the last step before mounting the
lenses into the frame. All other treatments as UV and tints should be
applied before the Super Scratch Guard. A one liter bottle will treat up to 200 pairs of lenses if the product is
kept wll covered when not in use. This product has a shelf life of about 2
month after starting to use it if it is kept closed air tight when not in
use.
Use of Hydrophobic slick coats on regular lenses. By Chris
Ryser, (Montreal July 11, 2010) Hydrophobic slick coats have
been around since 1987 when I first introduced them at Vision Expo
and the OLA exhibitions. They can be applied by evaporation of a
pill under vacuum, from a liquid concentrate under vacuum, or by
dipping the lens into a finished solution at room temperature. This
solution contains no solvents is water based, emits no fumes, is
totally safe and the process allows to do it with unprotected
fingers. As the finished solution is a
water based air cure material, very oxygen sensitive, there is no
further action required, just dip and wipe, no baking or other
process is needed. The base material is a Dow
Corning polysiloxane, mixed with several surfactants by using water
as the carrier. It provides, a super slick coating on the lens that
is also an excellent scratch resistant treatment through its super
slippery surface. This coating also has an
excellent adherence to most surfaces as CR 39, Polycarbonate and
High Index lenses and their hard coats. To provide an even better
mechanical bond there is a product to etch the untreated surface
microscopically.
Lenses stay cleaner longer By adding anti-stat and
ant-fog chemicals to the solution, dust will not be attracted to
the lenses, they will stay cleaner longer, and any fogging up will
dissipate within seconds. All other advantages you see on slick
coated AR lenses can be applied to regular non AR coated lenses and
achieve tneir full equivalent. These slick coats can easily
be applied after the lenses have been edged so they will not turn
and come off axis during edging process. A one Liter bottle will coat
over 200 pairs of lenses during its shelf life. There are two products
marketed by OMS Opto Chemicals for this purpose: Scratch Guard regular…………and
Super Scratch Guard, (ant-stat and anti-fog) Material Safety Data Sheet Click To Return to ►
OMS Optochemical Main Page
OMS OptoChemicals
100 Hymus
Boulevard, Unit J E-mail us! e-mail: oms_optical@yahoo.com |
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Chemical
Nano Technology 
CHEMICAL
DESCRIPTION AND TECHNICAL DATA 
Chemical
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