Leather die [sic: dye]
What is "leather coating" by your definition? The implication is that the coating is made of leather, ground up, and used as a coating. I realize that is ridiculous, but what else can be inferred? Is it a magical coating just for leather, made of secret natural leather ingredients?
No. "Leather coating" is a type of PAINT , a relative of vinyl, similar to lapplying liquid vinyl. Yes, it can sometimes be a close match to leather . It is less expensive to coat leather with a coating that may match leather colors or not, than to get real good leather. Rolls Royce, to my knowledge doe NOT use coated leather except maybe for lighter colors than available in leather. I do know that they use leather from cows that have not been near barbed wire as they dont want the marks which dyes would not hide but which coatings would hide. Cheap furniture leather has imperfections, so they just spray the leather with a plastic derived coating to get uniformity and fail to tell the customer that the coating is on top of the leather, hides the leather, and seals the leather almost completely.
None of these factory coatings allow leather to do much "breathing" and allows much less conditioners through, since conditioners have much larger molecules than air, and that is one reason why upholstery so coated tends to crack. Ever seen those British MG seats after a few years? How about old Cadillac seats, etc.? All of these coatings are based on synthetic ingredients, such as acrylics, and act as SEALERS. Yes, they also seal against dirt. And yes, ,they do provide a wear layer as they obviously provide a layer of "plastic" on top of the real leather. But all are opaque, whether they mimic real leather color or are non leather colors like white. Can anyone eally see the real leather through an opaque coating or do they mistake the fake colored sealer coating for real leather? Hello, Superman!
Lots of furniture dealers do not like to admit their leather is coated with a type of plastic paint that seals the leather from conditioners and impedes "beathing". But most dealers who do sell high quality leather furniture can take you from their cheap coated stuff over to their best stuff, and show you the difference between coated and dyed. I believe most are analine dyed. You can really see the actual leather, then go over to the cheap coated stuff, and try. Good luck.
That is why I call coated leather "imitation naugahyde", just to bug cheap furniture dealers who try tell me that it is real natural leather. Yes, the base is leather, but the top coating is similar to the old naugahyde. Do I want the leather "protected" by a coating that seals off the leather and provides an opaque "wear" layer? No. Smooth is pretty tough, ages well when cared for and lasts a LONG time. Sealed coated leather wears awhile, then the coating wears off, showing real lleather of a different color underneath, and cracks. I just worked on some VERY expensive leather seats in a VERY expensive Class A motorhome. The tan coating was wearing off, showing a slightly lighter leather underneath which was dried out and had been suffocated. I was able to rescue them for the most part. I have worked with leather for over 40 years, from clothes to upholstery to saddles. I worked for Fiebings Leather Dye Company for 10 years back in the early 1960s.
So, go ahead and verify what I say, go to a good furniture store and really check. on their coated vs. dyed leather furniture and ask them which lasts longer, something with a "coating" of a type of plastic paint, ask about cracking,, etc, and then about the lasting of their quality dyed leather when kept clean and conditioned. Ever see a saddle coated? They are dyed or left natural.