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T-BLOCK

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Silicone-Based Defoamer

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T-Block

Stain blocking additive for tannin control and cleaner coating finishes

Product Overview

T-Blockâ„¢ is a liquid stain blocking additive developed to control tannin bleed and other common staining problems in coating systems. It helps lock in stain-causing substances before they migrate to the surface, supporting cleaner and more uniform finishes. T-Blockâ„¢ is suitable for both primers and topcoats and gives formulators added flexibility through easy post-addition capability.

Key Features & Benefits

  • Effectively blocks tannin bleed-through and common stain migration
  • Works in both water-based and solvent-based coating systems
  • Can be post-added to primers or topcoats for formulation flexibility
  • Zinc- and zirconium-free for cleaner additive chemistry
  • Supports ECO-label compliant and label-free coating formulations
  • Helps maintain uniform appearance and long-term coating quality

Technical Specifications

Appearance
White liquid
Active Content
N.A
Recommended Dosage
ca. 3–4% on total formulation
Shelf Life
N.A
pH Range
N.A
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  • Our Expertise

Industries We Serve

Proven performance across diverse  applications and industries

Specific Applications:

Specific Applications:

Specific Applications:

Specific Applications:

Specific Applications:

Specific Applications:

Usage Guidelines

Addition Stage

Introduce during the dispersion or grinding phase for optimal results.

Dosage Range

Typically used between 0.15–0.6% depending on formulation complexity.

Optimization Note

Pilot trials are recommended to achieve the best balance of dispersion and rheology.

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  • Product FAQs

Frequently Asked Questions

Common Answers about Your Question
T-Blockâ„¢ is used to prevent tannin bleed-through and other stain migration issues in primers and topcoats.
Yes, T-Blockâ„¢ is suitable for both water-based and solvent-based coating systems.
Yes, T-Blockâ„¢ can be post-added to primers or topcoats for easier formulation adjustment.
T-Blockâ„¢ helps block tannins, wood extractives, nicotine, smoke stains, and water marks.
Yes, T-Blockâ„¢ is zinc-free, zirconium-free, label-free, and suitable for ECO-label compliant systems.

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