Bicast Leather Sticky Refinishing (Kit B7)

 Bicast Leather Sticky Care System™ (B2 → B3 → B7)

Bicast leather stickiness is a progressive condition, not a one-time problem.
Leather Doctor® solves it through a 3-level modular system, based on severity:

Level 1 – Prevention & Early Stickiness

  B2 Cleaning System

Level 2 – Active Deterioration

  B3 Degreasing System

Level 3 – Structural Breakdown (Hydrolysis)

  B7 Refinishing System 

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  How the System Works (Cycle of Care)

B2 maintains → prevents buildup
B3 corrects → stops deterioration
B7 restores → rebuilds structure

Then returns to:

   B2  for maintenance

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  Key Understanding (Very Important Positioning)

  Sticky Bicast is not dirt — it is polyurethane failure.
  Each system targets a different stage: 

Kit B7 is designed for structural failure of the polyurethane layer.

✅ When to Use:

• Soft, spongy, or “melting” feel
• Persistent stickiness after B3
• Visible surface breakdown

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✅ What It Does:

• Removes deteriorated PU layer
• Rebuilds a new crosslinked topcoat
• Restores a dry, durable finish

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 Kit B7: 6-Step Refinishing System

Step 1 – Degreaser 2.2
Degrease oil and sweat.

Step 2 – Rinse 3.0
Rinse oil and sweat.

Step 3 – Acidifier 2.0
Stabilize stickiness

Step 4 – Buffer 3
Mechanical Removal (CRITICAL)
Buffer 3 removes unstable topcoat
✅ Must produce white powder residue
✅ Prevents failure of new coating

Step 5 – Gloss 76 + Crosslinker 64 
Refinishing rebuilds new coating

Step 6 – Conditioning B
Ensures non-stick performance

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 Post-Restoration Maintenance Cycle

After B7 restoration:

  Return to B2 Cleaning System

This prevents recurrence and extends lifespan.

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 Bicast Leather Sticky Refinishing (Kit B7) by Leather Doctor®

Kit B7 is a complete professional system designed to degrease, pH balance, mechanically remove deteriorating urethane, crosslink, refinish, and condition Bicast leather.

It restores a dry, smooth, non-sticky finish while preventing future tackiness.

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 What is Bicast Leather?

Bicast leather (Bycast leather) is a split suede base coated with a polyurethane (PU) film and embossed with a uniform texture.

It offers:

• Consistent appearance
• Easy maintenance
• Lower cost than top-grain leather

However, the polyurethane surface is chemically sensitive and prone to deterioration.

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 Why Bicast Leather Becomes Sticky

Stickiness is not surface dirt — it is polyurethane breakdown (hydrolysis + contamination).

Common causes:

• Body oils and sweat → penetrate and soften the PU film
• Alkaline cleaners → swell and weaken the coating
• Humidity and environmental exposure → accelerate degradation

Typical Symptoms

• Rubbery or tacky feel
• Clothing sticking to seating areas
• Fabric imprint transfer
• “Tape-like” sound when sitting or rising

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 Why Kit B7 Works (What Makes It Different)

Unlike surface cleaners, Kit B7 addresses these failure layers:

1. Degreasing – degrease embedded oils.
2. Rinsing – rinse oils and debris
3. Acidifying – stabilizes chemical structure
4. Buffing – mechanical removal of deteriorating PU layer
5. Crosslinked Refinishing – rebuilds a stable, non-sticky surface
6. Conditioning – reduces stickiness

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 Critical Success Factor – Buffer 3 (New Improvement)

Sticky Bicast cannot be fixed by coating alone.

Buffer 3 is essential to:

• Remove the deteriorating topcoat as fine white powder
• Prevent unstable PU from remaining beneath the new coating
• Create a clean, receptive surface for adhesion

Professional Tip:

Continue buffing until residue remains light/whitish.
If it turns darker, you are reaching the color layer — reduce pressure.

This step determines whether the refinishing will succeed or fail.

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 Topcoat Coverage Guide (3 Coats)

• 4oz → up to 40 sq ft
• 8oz → up to 80 sq ft
• 16oz → up to 160 sq ft

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 Kit Contents

Available Sizes: 4oz / 8oz / 16oz

Click links for details:

✅ Degreaser 2.2
✅ Rinse 3.0
✅ Acidifier 2.0
✅ Gloss 76
✅ Crosslinker 64 
✅ Conditioner B 
✅ Brush 9
✅ Foam 2
✅ Towel 5 
✅ Eraser 4 
✅ Buffer 3 (Essential Step)
✅ Sand 2000 

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 Simplified Instruction Flow

1️⃣ Degrease

Apply Degreaser 2.2 → agitate → extract until towel shows clean

2️⃣ Rinse

Apply Rinse 3.0 (1:40 dilution) → agitate → extract until towel shows clean

3️⃣ Acidify

Apply Acidifier 2.0 (1:25 dilution) → dwell 3–30 min → wipe dry
✅ Surface should feel squeaky clean when ready

4️⃣ Buffer (Critical Step)

Use Buffer 3 to remove deteriorated topcoat

✅ Aim for white powder residue
✅ Avoid cutting into color

5️⃣ Crosslink & Apply Topcoat

1. Mix Gloss 76 into Crosslinker 64
2. Allow 30 minutes reaction time
3. Apply thin coats only
4. Dry between coats
5. Cure 24–48 hours before use

6️⃣ Condition

Apply Conditioner B (1:19 dilution)
Allow to dry to a smooth, non-stick finish

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 Prevention After Restoration

To maintain results, use:

 Bicast Leather Sticky Preventive Care Kit B2

Maintains pH balance
Reduces oil buildup
Prevents recurrence

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