2006-11-19 12:27:57 · 8 answers · asked by jordc127 1 in Science & Mathematics ➔ Chemistry
just that latex is water soluable oil is not oil is petroleum based
2006-11-19 12:31:26 · answer #1 · answered by Droptine s 4 · 0⤊ 0⤋
A question asked often. All paints are a colloide or suspension. That means they are a pigment or color which is usually in fine powder form and are mixed into a vehicle or substance that will carry it and help it spread and cure as paint. Why mix paint! Well the pigment is usually heavier then the liquid they are being held in and so they settle in time to the bottom of the paint can. The mixing helps it float again and be suspended in the liquid. Now traditionally the paint of choice has been oil based paints. if applied correctly, a gloss white oil paint on trim can't be beat for looks, they wear longer and last forever and almost never fade, but! Yeah, there's always a but, and this one is a big but. Sorry had to say that. oil based paints are difficult to apply for the novice, they emit strong odors and chemical vapors that aren't to healthy, they are real slow to dry, and that nice gloss white, well it tends to yellow and usually the cheaper the paint the faster it yellows. In essence the carrier of the pigment is oil! And clean up, well thats the big ordeal with the fact that you have to use chemicals that can cut through that oil, like mineral spirits an paint thinner and the like.
latex paint is a whole other animal. Being water based means that the vehicle which holds it in suspension is not oil based butrather the paint is an emulsion. it is quick drying, has little smell or volatile organic compounds and cleans up with regular soap and water. But sometimes thats the draw back of it. Smoothness in paint is the surface tension stretching smooth, real smooth!But with WB latex the paint dries so quickly that sometimes it doesn't have the time for the surface to cure the brush strokes and it dries with them still visible. In addition a water based matte finish paint is terrible to clean. Its like sandpaper! It is very popular because it is thicker the oil and with a little care, one coat will do you. But here's a note and some advice. Oil will stick to anything, latex will not. You can paint over latex with oil, but latex over oil is difficult without a primer. Good luck.
2006-11-19 21:04:41 · answer #2 · answered by cuttlekid 3 · 0⤊ 0⤋
Paint consists of three things- a solvent, a binder and color. the binder holds the color on the object you painted and is dissolved in the solvent. when the solvent dries, it leaves the binder and color attached to the surface it was applied to. the solvent can be water or a petroleum based liquid(oil). The water soluable one uses latex as a binder, but latex will not turn solid without a catalyst, and the water keeps the catalyst from doing its thing until after the water evaporates, at which point the latex becomes a solid and attaches to the color and the surface it is on. An oil based paint uses a resin,as a binder, that is dissolved in the solvent and hardens after the solvent evaporates.
2006-11-19 20:40:43 · answer #3 · answered by Rob H 2 · 0⤊ 0⤋
Aside from the obvious, they have different chemistry, different uses, and different clean-up techniques. Water-based latex paints are increasingly being used because they can be cleaned up with tap water, while clean-up of oil based paints requires paint thinner, mineral spirits, or some other petroleum derivative -- which has to be bought, and then disposed of.
2006-11-19 20:33:14 · answer #4 · answered by Anonymous · 0⤊ 0⤋
OIL. WITH WATER BASED PAINTS YOU CAN CLEAN UP WITH WATER, WITH OIL BASED YOU NEED PAINT THINNER ETC. I PREFER TO USE LATEX BECAUSE ALL CONSIDERATIONS ARE EASIER. QUICKER TOO. HAVE TO BE CAREFUL BECAUSE THE QUALITY OF LATEX CAN BE MINIMAL AT BEST. ANOTHER ADVANTAGE IS THAT WITH LATEX YOU CAN WATER DOWN WHATS LEFT TO FINISH THE JOB, DO NOT HAVE TO BUY AN ADDITIONAL GALLON, ETC. JUST BE CAREFUL WHICH AREA THAT IS , AVOID BUSY EASY TO SEE AREAS AND DO THAT IN CORNERS ETC
GOD BLESS
2006-11-19 20:35:25 · answer #5 · answered by thewindowman 6 · 0⤊ 0⤋
In water based paints, the curing process occurs through evaporation and in oil based paints the curing process is oxidation.
2006-11-19 20:34:17 · answer #6 · answered by fade_this_rally 7 · 0⤊ 0⤋
Oil based paints last longer.
Latex paints come of easier.
This is just from my experience.
2006-11-19 20:32:12 · answer #7 · answered by purin9191 2 · 0⤊ 0⤋
jordc127 Is this your story?
※※※ http://www.osoq.com/funstuff/extra/extra02.asp?strName=jordc127
2006-11-19 20:42:05 · answer #8 · answered by loh o 1 · 0⤊ 0⤋