Handicraft
industries include paints, adhesives and textile
Color: The
following figure shows a schematic view of the process of preparing a paint
formulation.
Resins which are mainly used for
making these colors are included all types of vinyl acetate homo-polymers and
copolymers, styrene acrylic copolymers, and pure acrylic copolymers.
Notably, there are mainly three
kinds of colors for painters. These colors are plastic, acrylic, and first class
Plastic colors witch plastic type made with homo-polymer resins.
First class colors are made with
copolymers or terpolymers resin. Semi-gloss acrylic colors are made with styrene
acrylic resin. Also, gloss acrylic colors are made with pure acrylic resin.
The most important features that
are required for making water- based colors of buildings are as follows:
Wash resistance, ultraviolet
resistance, opaque and the easiness of task, alkali resistance, gloss,
durability, adhesion to the surface and lack of absorption of dirt and storage.
The features of colors made with
any types of resins are shown in the table below:
A basic formulation for one kind of cheap wood adhesive is as follows:
Homo-polymer of
vinyl acetate: 65 kg
Starch: 3.9 kg
Polyvinyl alcohol solution: 1.5
Anti-foaming: 0.1
Antibacterial: 0.1
With regard to the
final application of each of the resins in textile industry, the formulation of
latex mixture is used on the fiber surface in the following forms.
For example, the
following mixture is used for the resin as an opaque of interior carpet.
·
Homo-polymer or
copolymer of vinyl acetate resin, calcium carbonate powder, water, fixation or
waterproof agents, fire retardant agents, soluble fraction of polyvinyl alcohol
and carboxymethyl cellulose or hydroxyethyl cellulose.
(It should be noted
that the resin viscosity and the final latex are changeable due to the type of
the device and the carpet)
·
Latex formulation
for nonwoven sizing: Curable acrylic or styrene acrylic copolymer resin,
Catalyst, fixation or waterproof factors, anti-foam factors, and thickening
factors if they are needed.
·
Latex formulation
for pigment printing: self-lubricating
vinyl acrylic, styrene acrylic, or pure acrylic
resin, water, thickeners, pigment, catalyst, wetter, and penetrator to the
fabric surface.
·
Notably, we are
very sensitive in producing resins which are used as pigment printing binder
because resins are of importance as well as wash and wear resistance in both
mentioned cases. The ability of pigment fixation on the fiber surface without
any change in color and in shade is the main priority.
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