egg residue removal

How can egg residue be removed ( after washing) from a Toyota Solara ( dark blue)?

Are you referring to egg residue or marks in the clear coat that look like residue?

I would suspect that what you are dealing with is etching. That is, eggs are very acidic and if left on the paint too long, the acid will eat into the clear coat causing an irreperable damage to the surface.

What are you alternatives?

If the etching is not too deep you can visibly lessen them by buffing the out with a buffer, cutting pad and compound.

Or, a good paint person could lightly sand the area and respray the clear and solvent blend it in.

Worst case you will have to take it to a body shop and have the repaint the hood.

It is imperative that you get bird dropping; eggs; insect residue, leaves and tree sap off paint ASAP so as to prevent etching,.

If you are not a detailer then you need to take it to a detail shop that is competent to analyze the problem and can explain to you in detail what they are going to do and why.

Regards
Bud Abraham

I posed your question to one of the industry’s eminent chemists, manufacturer and designer of protection products David Ghodoussi, Ph.D,CEO, Optimum Polymer Technologies, Inc and also Manufacturer Member of the NAPDR (National Association for Professional Detailing and Reconditioning

Here is his response.

Regarding your question about why egg causes etching of clear coat, I would say egg is a complex blend of many chemicals which include in large part calcium carbonate (shell mainly), amino acids/protein, vitamins, and enzymes. These components can damage clear coat paint in several ways. The shell can cause physical abrasion and any residue left behind can etch paint due to its causticity. The amino acids/protein can hydrolyze and create an acid functionality and an amine group both of which can attack paint. Enzymes and vitamins as well as metals present in egg can act as catalysts to facilitate paint degradation. Here is a more detailed description of the chemicals that constitute egg. Bon Appetite...

Shell
The egg's outer covering, accounts for about 9 to l2% of its total weight depending on egg size. The shell is largely composed of calcium carbonate (about 94%) with small amounts of magnesium carbonate, calcium phosphate and other organic matter including protein.

Egg yolk:
Yolk makes up about 33% of the liquid weight of the egg. It contains all of the fat in the egg and a little less than half of the protein. With the exception of riboflavin and niacin, the yolk contains a higher proportion of the egg's vitamins than the white. All of the egg's vitamins A, D and E are in the yolk. The yolk also contains more phosphorus, manganese, iron, iodine, copper, and calcium than the white, and it contains all of the zinc.

Egg White/Albumen
Albumen accounts for most of an egg's liquid weight, about 67%. It contains more than half the egg's total protein, niacin, riboflavin, chlorine, magnesium, potassium, sodium and sulfur. Egg protein is a combination of amino acids, which contain histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine and 9 other amino acids exist in the egg white.
Please let me know if I can be of further assistance. Thank you.
Best Regards,
David Ghodoussi, CEO
Optimum Polymer Technologies, Inc.
"Member NAPDR working to improve the detail industry"

For all it's information, the main damaging item is the "amino acids", which react very active with heat and moisture, once exposed to air.

The "amino acid" content, combined with moisture, oxygen and heat, is the real reason that "egg" attacks the resin system of a paint system, be it a single stage or a clearcoat.

Ever notice that when it is freezing temperature range, the "egg" does not do much, if any damage, sort of like a bird dropping, takes a combination of enviromental conditions to create the opportunity for damage to the resin system of a modern paint flim.

Ketch