deSede Armchair in select Black need help!

I have a deSade armchair bought in 2004. In recent years, cracks developed on areas frequently seated on and leather lost its suppleness.

Attachment 7318Attachment 7319Attachment 7320Attachment 7321Attachment 7322Attachment 7323Attachment 7324

Last year, I had applied some leather cream/wax to prevent further deterioration.

Attachment 7325

Now, I want to restore the damaged area and take better care of the remained area.
It is in black Nappa leather with light pigmented. From the leather sample, the back and cross section are in black.
I have put some water on it found water would not be absorbed.

Attachment 7326

Please advise how to restore the damage areas, bring back the suppleness and what is best to maintain the leather.


Thanks,

SimonCHAN

>>> Please advise how to restore the damage areas, bring back the suppleness and what is best to maintain the leather.

A complete sequence of restoration process will including the following:

A - Degreasing System:
The “leather cream/wax” need to be removed as it interferes with penetration for Repairs, Leather Rejuvenating and refinishing with Degreaser-2.2 > Acidifier-2.0 > Hydrator-3.3 ssytem.

B - pH Balancing System:
Damages to the leather are caused by body oil, grease and sweat contact, and the main culprit is the “SWEAT”. As the sweat ferments it shift or weakens the leather “amphoteric” protein fiber from ionic positive (+ve) to ionic negative (-ve), while the other leather constituents like the tanning agent, dyestuff and fatliquor remains unchanged, thus behaving like magnet “like poles repels” breaks the hydrogen bond between the protein fibers and the other leather constituent resulting in cracks as shown. This is done in conjunction with the degreasing system mentioned above emphasizing on Acidifier-2.0 to bring the leather pH chemistry integrity to between 3 and 5, leather pH neutral (iso electric point or pI) measurable with a leather pH meter.

C - Dyestuff Reactivating:
The lighter colors are the missing finishes and slowly the dyestuff beneath lightens as it fades. As mentioned above the “leather cream/wax” has to be removed so that Hydrator-3.3 can relax these shrunk fibers and reactivate the dormant dyestuff to resurface again. This reactivating process is highly recommended so that the appearance is less contrasting and will also need less Micro-54 pigment coloring to even out appearance.

D - Leather Rejuvenating or “bring back the suppleness”:
Objective is first to relax the shrunk leather structure and making it less noticeable both to the fingertips and sights before topping the diminishing fatliquor up to 15% when dry, measurable with a leather moisture meter or equivalent. When leather is periodic replenished with (ionic negative -ve charged fat and oil) to its optimum fat and oil moisture level it will never crack!

E - Structural Repairs:
Micro cracks are fiber breakage that weakens the tensile strength of the leather and is strengthen with Impregnator-26 to tightens back the leather structure.

F - Adhesion Coating:
This coating smooth out any surface suede and acts as a foundation for better adhesion from finishes peeling with Adhesor-73.

G - Micro Pigment Coating:
This is a micro pigment used originally in the tannery - that is refinishing back to its original with Micro-54.

H - Sealer or Top Coating:
This is to seal or lock-in the pigment color from poor cleanability or durability and also decides the luster of the appearance; typically the satin luster is used for semi-aniline with MicroTop-54S.

I - Non-Stick, Rub-Resistant, Buttery-Feel Protection to the Finishes:
This Protector-B (scentless) or the classic leather-scent version Protector-B+ enhances the tactile feel of the leather to a buttery-feel, non-stick, noise reduction and rub-resistant that makes leather so irresistible for armchair and other upholstery.

You have all the answers above.

Let me know if this is the direction you wish to take.

And any questions of the above sequence of procedure before we go into the details of how-to.

See the difference leather finishes type from this link:
http://www.leatherdoctor.com/upholst...ther-care-kit/

Description of Semi-Aniline leathers:
Semi-aniline leathers have all the qualities of aniline leather but also have a light micro-pigment finish and topcoat applied. This additional micro-pigment finish and topcoat increase UV light and water resistance. Micro-pigment is applying finely grounded pigment finish to aniline leathers to even out the difference in color absorbency intensity. Full-grain leathers that are colored with transparent aniline dyes and are micro-pigmented are classified as semi-aniline.
Pigmented (P.sa) - semi-aniline / micro-pigmented leathers - Leather Problem Solving Matrix:
Attachment 7327

Products mentioned may be added to this Kit-Sa7.cl accordingly. . .

Attachment 7328
http://www.leatherdoctor.com/kit-sa7...finishing-kit/
Leather Doctor® Kit Sa7.cl, micro-pigmented leather color refinishing kit is design for a holistic restoration approach to not only the finishes but also rejuvenating the leather for suppleness. Most of these repairs may range from missing finishes to abrading damages into the leather structure. Some expose areas may be contaminated with foreign soiling that includes conditioners, protectors, body oil, grease and sweat or alkaline overexposure from cleaners. A comprehensive repair for a long-term lasting solution will require a holistic approach to deal with both the exposed structure and surface finishes. The practical and functional softness and strength of the leather depends on the health of the structure with average thickness between 0.9 to 1.2mm from stiffness and cracking. The aesthetic aspect of the leather finishes averages 0.02mm (or 20 micron) in thickness for practical compressing and flexing from cracking. A leather-safe restoration system begins by stripping with Stripper-2.3 and rinsing with Rinse-3.0. Degreasing with Degreaser-2.2 follows with Acidifier-2.0. The suffix numbers of these four products denotes it pH value for recharging the protein fiber ionic positive besides the act of decontamination. The leather integrity is revitalizes once the ionic attraction between the positive protein fiber and its negative leather constituents like the tanning agent and fatliquor (fat, oil and water) is initiated. Leather rejuvenating system for softness and strength is accomplishes with Hydrator-3.3 follows with Fatliquor-5.0. Surface uneven absorption is seals with Adhesor-73 to reduce the need for color over-coating thus increase its flexibility and stretchability from premature cracking. Protector-B imparts a non-stick rub-resistant surface with a buttery feel, reduces noises that translate into less friction wear. As the leather surface is well lubricated it reduces compression when comes to heavy body contact thus reduces compressed creases and wrinkles.

Instruction:

Stripping Existing Deteriorating Finishes:
1. Cover and tape off frames, trims and protect flooring.
2. Mist sprays Stripper-2.3, Eraser-4 scrub with help of 2000-grit sandpaper feathering out seamlessly and towel extract for an even appearance.

Degreasing:
1. Shake Degreaser-2.2 to gel prior to use with a repeat shake and rest until it gels.
2. Transfer to Eraser-4; agitate to saturate the stain, feather out to the entire section.
3. Towel extracts suspended soiling after 10 to 30 minutes or before it dries until it shows clean.
4. Spray Acidifier-2.0, towel extract until it shows clean to a healthy squeak.

Hydrating:
1. Spray Hydrator-3.3 saturating the stain area and feather out for an even appearance.
2. Covering with tissue paper without airspace to trap wick up stains instead of remaining on the leather surface as it dries.
3. Peel tissue paper when crispy dry and use Eraser-4 to erase surface residue prior to fat and oil replenishing.

Fat and Oil Replenishing:
1. Spray Hydrator-3.3 to precondition the leather prior to fat and oil replenishing.
2. Spray Fatliquor-5.0 and redistribute with foam brush until saturation.
3. Repeat application each time water contents evaporate until fully saturated.
4. Drive remaining surface remnants free of milky fat and oil until it turns clear with Hydrator-3.3.
5. Allow natural drying for extra softness.

Dry Prep:
1. Erase wick-up residue with Eraser-4 prior to repairs.

Adhesion Promotion Coating:
1. Apply Adhesor-73 by foam brush to seal surface uneven absorption rate and promote adhesion simultaneously.

Color Coating:
1. Apply color matching Micro-54 + 10% Thickener-48 for flow control and airbrushing for professional result.
2. Fine dry atomize dispersion with more air is achieve with 80 to 100psi of air pressure.
3. Light spray is preferred and let dry in between coats to build up colorcoat.

Topcoating:
1. Shake the product well and apply by airbrushing for professional result.
2. Use lint free paper towel to even out drips and streaks.
3. Speed dries between coats with help of hair dryer.
4. 2000-grit sanding may applies to improve touch and appearance.

Rub-Resistant Protection:
1. Mist sprays Protector-B redistribute with a foam brush / paper towel and ready for use when dry.

Roger Koh
Leather Care System Formulator
Consultant / Practitioner / Instructor
web: www.leatherdoctor.com
forum: www.leathercleaningrestorationforum.com
email: [email protected]

Dear Roger,

Thank you for your answer.

I note an associated product was mentioned for each of the sequence A to I except for D - Leather Rejuvenating. What are required for leather rejuvenating?

Yes, I want to go head with the recommended retoration process. Please advise in detail how to carry out all these sequences.

Best regards,

SimonCHAN

>>> I note an associated product was mentioned for each of the sequence A to I except for D - Leather Rejuvenating. What are required for leather rejuvenating?

Hydrator.3.3 > Fatliquor-5.0 > Hydrator-3.3 system.


>>> Yes, I want to go head with the recommended restoration process.

The sequence of color refinishing is found in the instruction of the Kit-Sa7.cl above.
The “E - Structural Repairs” as necessary is done before “Adhesion Promotion Coating”.


>>> Please advise in detail how to carry out all these sequences.

The details are already provided from my posting.
However, personal coaching by Skype is also available at a cost of US$99/- an hour.

Roger Koh
Leather Care System Formulator
Consultant / Practitioner / Instructor
web: www.leatherdoctor.com
forum: www.leathercleaningrestorationforum.com
email: [email protected]

Dear Roger,

Is a Kit SA7 sufficient to carry out all the above mentioned sequences to my armchair?

Regards,

SimonCHAN

>>> Is a Kit-Sa7.cl sufficient to carry out all the above mentioned sequences to my armchair?

This starter kit does not answer the question on “sufficiency” to your project. An example of product usage such as Hydrator-3.3 > Fatliquor-5.0 are available individually from searching the CATEGORY from the on-line store left column. Cleaning products consumption varies from absorbent to non-absorbent surface as well. Finishing products when color matches may be concentrated more on the damaged areas and feather out less on non-damaged areas. These are only a few example why sufficiency may varies from project to project and person to person.
http://www.leatherdoctor.com/fatliquor-5-0/

Roger Koh
Leather Care System Formulator
Consultant / Practitioner / Instructor
web: www.leatherdoctor.com
forum: www.leathercleaningrestorationforum.com
email: [email protected]