Paints
consist essentially of pigments (the colourant), the binding agent
(which binds the colourant to the surface) and of solvents, which keep
the paint in suspension until applied.
After painting the solvent evaporates and leaves the dried paint on the surface.
This
process is the same with 'conventional' and 'natural' paints. The
vital difference lies in the ingredients used as pigments, binding
agents and solvents.
The
difference in pigments and binding agents, used in 'conventional' or
'hard chemistry' and 'organic' or 'soft chemistry', is fairly easy to
see.
With solvents,
however, there have been deliberate attempts by the petrochemical
industry to misinform the public about the nature of ethereal oils, as
they become more worried about the growing competition posed by organic
solvents. With this brief information we hope to make the difference
clear for the public.
We
include here an evaluation of three different concepts of solvents, as
used in 'Natural' paints, which will make it clear why we in AURO have
consistently worked with the 'ethereal oil concept'.
Our aims are radically ecological and our commitment is absolute.
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Test - Petrol Concept
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Iso-aliphatic Concept
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AURO - concept
(ethereal oils)
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- de-aromatised test-petrol
- turpentine substitute
- aliphatic hydrocarbon
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-Iso-aliphatic compounds, iso-paraffin
- Aliphatic hydrocarbon (undecane, dodecane)
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- Rectified ethereal oils
- Balm oil of turpentine
- Oil from citrus peel
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Constituents
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Crude oil (non renewable resource)
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Crude oil (non-renewable resource)
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Vegetable balm, fruit peel (renewing resource)
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Raw Material
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Oil-cracking, followed by chemical hydrogenation
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Oil-cracking, followed by multi layered chemical synthesis.
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Distillation (without chemical; change of substance)
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Method of production
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Usual hazards of accidents or emissions of the petrochemical industry.
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Use of iso-butane, fluorinated hydrocarbon and butylane (emissions
accidents, special refuse from 'hard; chemistry)
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Non: ethereal oils are produce of 'Soft' chemistry, waste can be recycled.
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Production hazards
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- Remnants of cancerous substances ( xylene, toluene)
- Degreasing of skin
- Long-term risks not yet evaluated
- Negative influence on central nervous system
-Inferior solvent for natural resins, so that additional ethereal oils are necessary
-Frequent occurrences of aliphatic or benzine allergies
- Annoying smell of petrol
- No closed ecological cycle
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- Weak in smell due to inorganic structure, no warning function.
Risk of unnoticed damage to the central nervous system.
- Long-term risks probable but not yet proven (new chemical)
- Degreasing of skin
-Very poor solvent for natural resins, so that additional ethereal oils
are necessary. Allergiological advantages are therefore given up.
- No closed ecological cycle.
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- Degreasing of skin
- High price, but no overexploitation of resources.
- Occasional allergic reactions through previous damage by chemicals
- Negative influence on central nervous system, if warnings through smell are ignored.
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Disadvantages
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- Cheap petrochemical substances
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- Cheap petrochemical substances
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- Excellent long-term experience, used in food stuff, healing agents and cosmetics.
- Warning, through smell
- No 'painters scabies' through controlled raw materials.
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Advantages
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Contributes to build up of smog
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Contributed to build up of smog. Risks for ozone layer because of
high chemical stability (analogy to CFC's)
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No build up of smog. All resins and oils are taken from natural cycles and are finally re-integrated.
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Smog Ozone-layer
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Restricted recommendation
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Restricted recommendation
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Recommended
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Test
-
evaluation
Oko-Test-Magazine
issue 06/88:page 44/45
issue 11/88 page 38
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