Chemistry of Paint & Pigments

[Chacmool]

Thanks, Turtle! We are honoured that you have decided to share your painting with us. I find it quite mesmerising - would it be possible to show us some more detail?

[Boerseun]

Concerning cadmium and lead in your paint, I suppose the question you've gotta ask yourself is this:

"Do I really want to dye for my art?"

[Turtle]

___I have thought of doing my patterns in hooked rugs using naturally colored cotton (a lady is growing this in the Western US! ) & so I wont have to dye for my art.

[Chacmool]

Thanks for the close-up! Your painting is simply wonderful. I feel drawn to it like a moth to a flame. The design is quite spectacular. Congratulations!

[Turtle]

___How kind of you to say Chacmool. Watching a show on PBS today on art, I now want to do the pattern(or some similar) as a wall using colored tile. Just to keep it chemically pigmented, I assume the same minerals in large part constitute the pigments in firing tiles as in tinting paint? Of course I still won't put the tiles in my mouth .
___Onward with color!

[Turtle]

Originally Posted by Turtle

Today I received some misdirected doll & went for bier, tobacco, new canvass & paint. I bought more green from a different manufacture but with the same title "Permanent Green Light"; I don't know yet if it has a lumpy polymer, but it lists these pigments:
Chlorinated Copper Phthalocyanine & Benzimdazalone Yellow
Turtle Out

___Lately I have neglected the painting, but as I spent 10 minutes at it today, I recalled commenting on the new tube of Permanent Green Light. The new tube is as much 'runnier' than the average as the old tube is 'chunkier'; it requires at least 2 coats for the dpeth I want. Maybe the first tube was old & the polymer chemically changed in the tube? Will my paints all go chunky if I don't use them in X amount of time?
___I have thought about painting the back of the canvas in a dark color to deepen the look of the colors from the front; anyone ever try/use this technique?

[HydrogenBond]

Paints have solvents and driers in them. These will evaporate out so the polymer and pigments can dry and cure. These thin the product making coverage less or opacity less. Once the tube is open they begin the evaporation/drying/curing. You can add the solvent back and it will thin back out.

Coloring the canvas background with a base color leads to cool effects that can take advantage of paints that don't cover so well. A dark green background with a semi-opague light yellow-green will make the light yellow-green appear more brighter and more yellow with whispers of deeper green trying to haze through. The base green fools the eye and appears to wash out the green in the lighter green.

[Turtle]

___Thanks Hydro. I have secured your tips for future work. I haven't painted much this last month, but I put a photo that Ace took of the new piece in the Science Gallery. Enjoy!
http://hypography.com/gallery/showim...c=3&userid=796

[Turtle]

___The painting in progress; http://hypography.com/forums/gallery...c=3&userid=796 uses a new color, Ultramarine Violet by Golden Acrylics.

makeup: Polysulfide of Sodium-Alumino-Silicate/PV15 & 100% Acrylic Polymer Emulsion; Lightfastness I; conforms to ASTM D 5098

Health & Safety notice from tube: Based upon toxicological review, there are no acute or known[italics theirs] chronic health hazards with anticipated use of this product (most chemicals are not fully tested for chronic toxicity). Always protect yourself against potentially unknown chronic hazards of this and other chemical products by keeping them out of your body. Do this by avoiding ingestion, excessive skin contact, and inhalation of spraying mists, sanding dusts, and concentrated vapors. Contact us for further information.

The finished painting is out of my city on loan:
http://hypography.com/forums/gallery....php?i=469&c=3

I have so far used the colors only as they come from the tube & worked on just one painting at a time, but now I have laid out a new canvas & it's promising to keep me in the pink I think.

[P-man]

Wow, that's really cool. My dad paints quite a bit and he recommends Golden Acrylics (like your ultramarine violet). Apparently they have a nice feel to them but he doesn't paint in the same style you do so I dunno if they would suit you. They are rather on the runny with partial seperation between the pigment and water/solvent but once mixed they are awesome.

Good luck,