Paint Filler: What Powders are Used?

titanium dioxide is used in art paints.

I thought that the lead used in paints was there as a pigment, not just a filler.

Am I wrong in my assumption?

No, you're right, lead oxide is a white pigment and a cheap one at that. That's why it was used for so many years.

Are you inquiring about Paints (for cosmetics/aesthetic uses); Protective Coatings (for corrosion resistance); or Linings (for immersion usage)?

Each of these coatings generally consists of a Vehicle (to help get it spread to the right wet film thickness), Resin/Binders, and a Pigment or pigments.

Primers for protective coatings might be Sacrificial (e.g., zinc-rich), Inhibitive (e.g., red lead), or simply Barrier type (e.g., epoxy).

Pigments (of which there are thousands) might be flake-like, globular/clustered, or acicular (needle-like) in shape. All pigments are listed in an International Pigment Index.

Check-out http://www.rexart.com/colorindex.html and other Google hits for scads of additional info.

Need more input to provide more output. (PS: lead is "out" for residential / housing and many office-type applications, but not for many commercial uses.)

A - the word is "demise"

B - It's a pigment, not a filler

C- Lead is not inert, merely heavy

D- Titanium oxides yield a brilliant white

Next question please?

Lead is a poison - that is why it has been banned particularly for toys

Lead is a poison if ingested. {The lead acts to inhibit learning abilities.} In the past,some of the lead was ingested in the water we used to drink when lead pipes were used for transport of water. These days, we are still (because of WHO and EPA guidelines)concerned about running the tap whenever flow is first started to protect us against the potential of lead being in the water due to solder used on copper piping.

Somewhere in the dim dark past, the children began thinking it would be "really cool" to chew on painted objects and since the parents were raised drinking water that came from lead pipes, they were intellectually challenged and they let them chew on the paint. The lead acts to inhibit their learning abilities and now the governments of the world (who try to protect us from ourselves) have acted to ensure that the gene pool continues to maintain people that like to chew on paint. Gives me real faith in eveolution.

I asked the queston on lead oxide fillers for a couple of reasons. I thought ,the lead oxide, was used to thicken and give paint the quality to withstand the elements.

Most metal oxides are are at a lower energy level and not too reactive.Perhaps lead, in its metal form has poisonous qualities. but as the metal gets a coat of oxide on it. it protects the metal for centuries. There are cathedrals with lead roofs which have withstood centuries of exposure. further more, lead produced, hundreds of years ago contained a percentage of gold. up to 5% I believe.

If lead is so poisonous. It must have brought about the down fall of the Roman Empire? I feel the dangers of lead poisoning are about as serious as Radon Gas.

the hole over the south pole. which seems to be causing the "south pole to become colder" The warming of the north pole, which is going to raise the sea level. R12 and any other danger that international corporations can invent.

GF

I think the scare on lead paint is that kids were eating the paint chips and it was affecting kids learning processes and health issues.

I recall reading about the lead pipes that the Romans used to use, and while it may be a stretch to say that alone caused the fall of the Roman empire, it is certainly considered to be a contributing factor.

Incidentally, poisoning (through inhalation) is also the reason that tetraethyl lead was banned from gasoline; during the combustion process lead was released. It makes a great solid lubricant in the engione for valves and the like, a great way to raise the octane rating of the gas, but, oh, we are poisoning our kids.

(I don't have any, but I understand the concerns)

There is a powder that's real fluffy when dry like talcum powder called monosote.

I used to work for a paint manufacturing company in San Leandro, CA about 1980 on summer, and that is what we put in paint that was used for the paint used in marking lines and letters on the streets and for the safety paints. It made the paint thick.