Printable View
I have a 10 year old aniline leather couch. We replaced the seat cushions with new leather and re-dyed the rest of the leather.
However there are some areas that we re-dyed that have some hairline cracks and the dye is not holding well. See the attached photos.
Before we re-dyed
Attachment 2054
After we redyed-
Attachment 2051Attachment 2052
Dye used
It is easier to understand your situation with before and after picture references for comparison.
>>> We replaced the seat cushions with new leather and re-dyed the rest of the leather.
I assume your picture #1 armrest is new and the cushion is old, am I right?
Is picture #3 the after result of picture #1?
Leather is identified as “Aniline” with a gloss finish and the Aniline (A) Leather Problem Solving Guide is used as reference.
Attachment 2057
Picture Observation and Comments:
Picture #1:
The cushion shows drying, wrinkles and over stretching – a leather structure rejuvenating process with Hydrator-3.3 > Fatliquor-5.0 system will improves the leather with softness, strength, wrinkles, tautness softness and strength.
A holistic refinishing will include these sequence of procedure:
1st Preparation Cleaning:
Degreaser-2.2 > Acidifier-2.0
2nd Removing of old and deteriorated finishes:
Rinse-3.0 > Razor-60 > Stripper-2.3
3rd Skin Repairs, Sealing and Adhesion Promotion:
Adhesor-73
4th Dye Coating instead of Dye Staining:
Aniline-76
5th Topcoating:
AnilineTop-76 G
6th Rub-Resistant Protection:
Protector-B+
Picture #2:
>>> after dying – the dye not holding in certain scuff areas.
Good to have the before picture for comparison.
However, since dyes are transparent unlike opaque pigment, the existing grain beauty and blemishes still shows through. Solution is to strip the entire section with Stripper-2.3 for an even appearance prior to dyeing it.
Picture #3:
>>> With hairline cracks and dye is not holding
A staining dye like Aniline-21 or equivalent needs to get through existing topcoating in order to stain the protein fiber is one of the reason why a “coating” dyestuff like Anilne-76 is recommended for this gloss topcoated aniline type. Another reason is the ineffective cleaning preparation where greasy soiling is still presence.
Roger Koh
Leather Care Consultant
www.LeatherDoctor.com
Product Information:
Attachment 2058
Leather Doctor Kit A7.cl – Aniline Leather Dye Refinishing Kit
Leather Doctor® Kit A7.cl, aniline leather dye refinishing kit is designed for dyestuff and topcoat refinishing from the simple sunlight fading to the severely sweat damages from body oil and grease. Most severely penetrated, prolonged and neglected stains show a darkening effect with a sticky feel have its topcoat and dyestuff probably deteriorated by the sweat. When the stain feels sticky, it is a sign of leather denaturing and reverting to rawhide from breaking of bonds with the tanning agent. When sign of color is transfer to a white towel, it indicates that the dyestuff has also break bonds with the protein fiber. When leather is stiff or show signs of whitish residue migrating, it shows that the fatliquor is breaking bonds as well with the protein fiber. The main component of the leather protein fiber is amphoteric while the other constituents are not; shifting of the pH mainly caused from sweat to alkalinity affects the pH imbalance. To revert from denaturing into rawhide prior to topcoat refinishing, contaminated alkaline soiling is removed with Degreaser-2.2, a waterbased (pH 2.2) multifunctional degreaser that emulsifies greasy contamination besides controlling dye bleeding and charging the protein fiber ionic positive for strengthening the attraction between the ionic negative tanning agent, dyestuff and fatliquor. Deflocculated and suspended soiling is towel extracted, thereafter rinse and pH balanced with Acidifier-2.0 to prevent the leather from reverting to rawhide. When leather feels sticky or slimy it is a sign of leather denaturing, a squeaky feel when wet is a sign of a healthy leather. Hydrator-3.3 relaxes stiff leathers and removes surface tension free from surface blotchiness prior to fat and oil replenishing. Fat and oil is replenished with Fatliquor-5.0 to rejuvenate the leather for the desired suppleness when dry. Custom redyeing commences prior to topcoat refinishing. Protector-B+ imparts a non-stick rub-resistant protection with a buttery-feel that shield against sticky soiling and reduce friction noises. Note that the mentioned product suffix number denotes its pH value in this holistic leather-safe aniline leathers dyestuff and topcoat refinishing system.
Email [email protected] for a color matching services.
Please email [email protected] with your choice of color available from:
Antique-Brown, Black, Yellow, Orange, Red, Red-Brown, Rubine, Blue, Dark-Brown.
And choice of topcoat luster,
Gloss or Matte, Satin is a mix of Gloss and Matte.
http://www.leatherdoctor.com/servlet...t-A7.cl/Detail
Sure see my comments i bold below
Quote:
Originally Posted by Roger Koh
>>> Photo 2 is the back (vertical) seat cushion after is was re-colored. It does not hold the color well in the cracks.
A “coating” dyestuff like Anilne-76 is used instead, most others are “staining” dyestuff to the protein leather fiber. With existing topcoat makes staining ineffective, absorbent rate also plays a part in color intensity. That is why the innovative “coating” dyestuff produces a better result for existing topcoated leathers.
>>> Does the stripper remove all the existing dye.
Stripper-2.3 will removes surface finishes including the existing topcoat. This removing of the topcoat is to facilitate a more even absorbent for new finishes including “coating” dyestuff like Aniline-76 as an option. However AnilineTop-21/76 is mandatory.
>>> The leather does not have any topcoat or gloss, it's just leather.
Only unfinished leathers like “Vachetta” or unfinished veg-tan leathers doe not have any finishes. All other aniline leathers have a topcoat. Pure-Aniline will have a natural topcoat that is the lightest and most natural with ease of breathability still have a topcoat AnilineTop-21N. A matte aniline topcoat uses AnilineTop-21M, a waxy-matte aniline leather uses AnilineTop-21W and yours is confirm to use AnilineTop-21G or 76G for a gloss finish.
You may do a testing yourself if what I say is true:
1st - Find a hidden corner and scrape the surface or abrade it – it will turn lighter in color.
2nd – Use a cotton swab and apply AnilineTop-21 or 76G to it and when dries return to the original shade.
Tips:
Applying dyes is only the last resort, as they are messy and out of control especially on the lighter and medium range, unless it is to the dark range.
Colors intensified by this sequence of process, all contributing to restoring the color, it is until this sequence of process is completely and intensity of color is still lacking that re-dyeing is considered.
1st - Activating the dormant dyestuff from within the leather structure to resurface with Hydrator-3.3.
2nd – Replenishing the diminishing fatliquor (fat, oil and water) with Fatliquor-5.0 that contributing to the seasoning of the color intensity.
2nd Removes the deteriorated topcoat that cause dullness to the leather and restoring its original luster with new AnilneTop-21G / 76G.
Roger Koh
Leather Care Consultant
www.LeatherDoctor.com