HomeNew ReleasesLeather ProcurementLeather TechnologyLeather CleanerConsultancyPortfolioEventsContact UsTwitter
Leather Wipes
You are here: Leather Cleaner > Our Leather Cleaner Range > DyeBlock Protectant

Dr Leather DyeBlock Protectant

Modern day leathers can pick up soiling and be susceptible to Dye Ingress, particular white and light coloured leathers. Whilst the finishes used today are extremely tough and durable, their topcoat chemistry can be a little bit compromised with regards to soiling and in particular dye ingress. 

Firstly though, in order to control and improve upon something, one must be able to measure current performance as a benchmark that is analogous to actual wear. To do this we utilise the Martindale Tester, which allows two different materials to rub against one another under specific conditions, such as temperature, humidity and pressure, and of course number of cycles.

The automotive industry utilises control fabrics which are contaminated with different staining compounds in a standardised rubbing action over the leather surface via the Martindale abrasion tester.  After a set number of cycles (in this case 2000) the degree of colour change on the surface of the leather is measured. Subsequently the soiling is wiped off, in this case by means of our Dr Leather Cleaner product, and the colour change is remeasured.

For Anti-Soiling (VDA Test), contaminants are applied on the leather by standardized soiling cloths as follows:

*EMPA 104: Polyester/cotton, soiled with carbon black/olive oil

*EMPA 128: Cotton jeans with indigo/sulfur black, soiled with carbon black / olive oil

On the left side, you can see that the standard automotive leather can become soiled fairly easily, and that our Dr Leather Cleaner does a great job in cleaning it off, but it is not perfect. I should point out here that these tests are quite extreme, and you would never (I hope!) get the leather that dirty before cleaning. On the right side you can see the same leather but that has been treated with Dye Block and immediately the differences are appreciable in the reduced amount of soiling and then the added improved capability of being cleaned.

The Dye Ingress testing is similar; contaminants are applied on the leather surface via a control “soiling cloth”, where one of the best current standard targets is the Jaguar-Landrover denim fabric with indigo dye, soaked in alkaline sweat solution (BS1006 E04)tested to 1000 cycles, pressure 12Kpa. We then need to achieve a particular colour transfer standard requirement of ≥ 4 (grey scale which is a particular scale used in the leather industry from 1-5 where 5 is no colour marking) before cleaning. We then further the test by looking at the degree of soiling after cleaning (1000 cycles as described above) where the cleaning cloth is soaked in our Dr Leather cleaning solution, and the requirement must be ≥ 4-5 (grey scale).

Again there is a significant improvement. The chemistry we use is very advanced to achieve this, and simultaneously the coating does not affect feel, gloss levels or look to the leather. When applied correctly, after the seats have been well cleaned and the coating allowed to dry and cure overnight (in ambient temperatures) then it offers a good durability, generally seeing at least six months before a reapplication is required.

So I hope this helps in understanding the product more. Any questions please do get in touch.

If you are interested in purchasing the product then please e-mail us directly (darryl@drleather.com) or visit one of our retailers on our Current Retailer page.
© 2018 Dr Leather Ltd | All Rights Reserved | Disclaimer | Sitemap
 Home  New Releases  Leather Procurement  Leather Technology  Leather Cleaner  Consultancy  Portfolio  Events  Contact Us  Twitter