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Thread: (Pigmented/semi-aline) High contact areas very dry, sticky/tacky with prolonged contact, water beads on surface

  1. #1
    Join Date
    Feb 2017
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    Default (Pigmented/semi-aline) High contact areas very dry, sticky/tacky with prolonged contact, water beads on surface

    New to me couch, chair, and ottoman set that has obviously seen a lot of use/abuse that I'm trying to return to acceptable condition. The first photo is a couch seat cushion where you can see the waxier looking original finish on the left and the worn duller finish on the right.



    Both sides will bead water so I'm unsure whether I need to perform a topcoat restoration in addition to a restorative cleaning regimen. Here is a detail shot of the same seat cushion, on the worn area. Because of the "crackled" looking texture am I correct in assuming this in a pigmented/semi-aline leather?



    All of the high traffic areas look like this - darker, dull finish than the original one and feel dry/rough to the touch. The couch is the only piece that has the tacky thing going on - heat seems to be the activating condition as the leather does not feel tacky when cold.

    Is [URL=http://www.leatherdoctor.com/kit-sa7-st-semi-aniline-leather-sticky-topcoat-refinishing-kit/}Sa7.st kit[/URL] the best approach to bring this leather back or is there a better way to a la carte a solution?

  2. #2
    Join Date
    Feb 2007
    Location
    Greater Vancouver, Canada
    Posts
    4,316

    Default

    >>> Because of the "crackled" looking texture am I correct in assuming this in a pigmented/semi-aline leather?

    This is identified as “Bicast” leather
    http://www.leatherdoctor.com/bicast/


    >>> Both sides will bead water so I'm unsure whether I need to perform a topcoat restoration in addition to a restorative cleaning regimen. All of the high traffic areas look like this - darker, dull finish than the original one and feel dry/rough to the touch.

    The darker appearance is the accumulation of body oil, grease and sweat and would need a good degreasing with Degreaser-2.2 and rinse with Acidifier-2.0.
    The dull finish is the beginning of the topcoat deteriorating and will need BicastTop-76G cross-linked with 10% of Crosslinker-25 to control the tacky-feel.
    The roughness is the cracking edges that are to be smooth prior to the topcoat refinishing.


    >>> The couch is the only piece that has the tacky thing going on - heat seems to be the activating condition as the leather does not feel tacky when cold.


    Protector-B will reduce the tacky feel but would not stop the deterioating of the topcoat - preferred to repair and renew the deterioating topcoat for a long term solution then enjoy the soft non-stick feeling of the buttery-feel Protector-B. The Protector-B+ will impart a classic leather-scent is an option.


    >>> Is [URL=http://www.leatherdoctor.com/kit-sa7-st-semi-aniline-leather-sticky-topcoat-refinishing-kit/}Sa7.st kit[/URL] the best approach to bring this leather back or is there a better way to a la carte a solution?

    The standard recommendation is with this Kit-B7+ - Bicast Leather Sticky Topcoat Refinishing Kit
    Name:  Kit-B7+.JPG
Views: 31
Size:  1.74 MB
    http://www.leatherdoctor.com/kit-b7-...nishing-kit-1/

    Leather Doctor® Kit-B7+ is an up-size version of Kit-B7 with double the cleaning coverage and topcoat refinishing formulated to restore the common sticky problem associated with Bicast and Simulated urethane finished leathers. Owner often describes the sticky problem as follows: The finish has gone dull on the seating areas and any material comes in contact sticks to it. The finishes feels a bit rubbery but after 5mins of sitting clothing were stuck to it. The location that suffers tackiness also reveals roughness to the touch. When sitting down and getting up, there is the sound of tape pulling and you can actually see a pattern on the couch from the jeans. If these experiences sound familiar then this kit is the answer. New product introduced is the CleanPro-1.5 (pH 1.5), which takes care of the general non-body contact areas, follows with Acidifier-2.0 as rinse. This restorative cleaning both removes foreign contamination and reduces stickiness at the same time. Stripping the surface contamination including conditioners and protectors to the original finishes is done by Degreaser-2.2 with the help of Eraser-4 for better traction to removed surface materials. Suspended soiling is towel extracted and rinse with Acidifier-2.0. Sanding helps reduce surface roughness if any and the dust free surface is ready to receive a new topcoat. A 10% Crosslinker-25 is added to the BicastTop-76G prior to refinishing for extra finish strength from stickiness. The application is dry between coatings until matching up to the original luster level. Protector-B (scentless) imparts a non-stick buttery-feel against sticky soiling and rub-resistant against friction-wear. The optional Protector-B+ extra featurefurther diffuses a leather scent enhancing the leather more sensuously and luxuriously. This starter kit is design as a holistic system, with 3 coatings BicastTop-76G + Crosslinker-25 covers approximately 80 square feet. Optional adds-on and refills are available as individual bottles. Shipping Weight Options: Kit-RTU: 1.7kg is (ready-to-use) version and Kit-Fill:0.9kg (reduced weight in concentrates ratio) version to save on shipping, ease of handling and reduced freezing during winter season. Thus the 250ml bottles need to be cut and fill with distilled water prior to use accordingly.

    Instruction . . .

    Preparation: 1- Protect floor with plastic covering from overspray and drips prior to restorative cleaning and stripping accumulated soiling. 2- CleanPro-1.5 is spray and work with horsehair Brush-1 and Eraser-4 and towel extracted until towel shows clean. 3- Use the Eraser-4 sponge side for normal cleaning and the crepe side for extra scrub from embedded materials. 4- Degreaser-2.2 is used in combination on the body contact oil and grease areas especially to the headrest and the hand-rest. 5- Shake the Degreaser-2.2 from separation to gel prior to use. 6- Apply by brushing with Brush-1 and/or scrubbing with Eraser-4 to remove surface soiling. 7- Suspended soiling is extracted with a lint-free towel or cleaning sponge until towel shows clean. 8- Spray Acidifier-2.0, agitate with Brush-1 and Eraser-4 and extract until towel shows clean again. 9- Inspect for reduced tackiness, otherwise spray soaks Towel-T5 with Acidifier-2.0 and place until towel dries for inspection. 10- When dry, sand surface roughness and ensure free of foreign material. 11- Surface is ready for topcoat application when smooth and free of residues.

    Refinishing: 1- Empty the Crosslinker-25 25gm bottle (about 10%) into the BicastTop-76G 220gm bottle and swirl very well. 2- Once the topcoat is cross-linked, it is best to used within 8 hours, otherwise it will be cured hard and be useless. 3- Apply by BristleBrush-3” lightly to avoid streaks or finer soft varnishing brushes for streaks free result or airbrushing for professional result. 4- Dabbing with bristle brush reduces streaks as well as using a roller sponge. 5- Steaks are corrected by fine sanding when dry. 6- Use a hair dryer for speed drying in-between coats to satisfaction. 7- Let it overnight cure before non-stick Protector-B application.

    Protection: 1- Protector-B is applied evenly with either foamBrush-3” or Towel-5 and is ready for use when dry. 2- For routine application, a paper towel is recommended to simultaneous soiling extraction.

    Roger Koh
    Leather Care System Formulator
    Consultant / Practitioner / Instructor
    web: www.leatherdoctor.com
    forum: www.leathercleaningrestorationforum.com
    email: roger@leatherdoctor.com

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