FAH483H1 Lecture Notes - Lecture 4: Indian Yellow, Alkyd, Seashell

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23 Mar 2018
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FAH483: Introduction to Conservation
Lecture 4 January 25th
Paint and Pigments
4 Groups of Pigments
1. Artificial Inorganic:
-Has a metallic component (Toxic)
-Lead White
2. Natural Inorganic
-Mostly earth colors like ochres, umbers and siennas
3. Artificial Organic:
-By products of the refining industry (thinly, finely group colors)
-Ex: Mars brown, phthalos, hansas
4. Natural Organic
-Dye precipitated onto an inert base
Ex: Indian yellow carmine -> insect derived
Image Layers
Oil -> Pigment + Binder
-Acrylic Paint: (Synthetic Polymers)
-Acrylic Resin: Emulsified in water, many additives, surfactants, de-foamers,
preservatives, and thickeners
-Binder: Roplex
-Alkyd: Emerged in 20th century
Varnish Coatings/ Surface Coatings
3 Mains Uses
-Used for painting
-Protectant/ sealant
-Aesthetic use
Varnish Layers are extremely thin, and are sources from 3 main derivatives
-Fossils
-Living Trees
-Insects
(Gramvar)/ Damar Crystals:
-immersed in other solvents
Brushes
-Bright
-Flat
-Round
-Filbert
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