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Basic Copper Hydroxyl Phosphate | Laser-Activated Additive
Copper Phosphate for Smoke Control and Infrared-Triggered Polymer Modification
Introduction

Basic Copper Hydroxyl Phosphate | Laser-Activated Additive

Direct Answer

Basic Copper Hydroxyl Phosphate is an inorganic copper-based phosphate compound used as a laser-responsive functional additive. It absorbs near-infrared energy and converts it into localized heat, enabling laser activation, marking, or surface modification in polymer systems under defined processing conditions.

What it is

An inorganic copper(II) hydroxyl phosphate compound used as a laser-responsive and thermally active additive.

What it is NOT

Not a pigment, not a flame retardant by itself, not a conductive filler, and not a universal smoke suppressant.

Where it fits

Used in laser-activated plastics, inks, coatings, and polymer systems requiring localized photothermal response.

Boundary condition

Requires appropriate laser wavelength, polymer compatibility, and activation conditions; inactive without energy input.

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Entity Summary

Basic Copper Hydroxyl Phosphate is an inorganic copper phosphate material used to induce localized thermal or chemical response under laser irradiation.

Material Identity

Primary name: Basic Copper Hydroxyl Phosphate

CAS No: 12158‑74‑6

Synonyms: Copper hydroxyl phosphate, basic copper phosphate, cupric hydroxide phosphate, dicopper hydroxide phosphate, Basic Copper Phosphate

Material class: Inorganic copper phosphate salt

Generalized formula: Cu₂(OH)PO₄(sometimes Cu₂HO₅P)

Physical form: Solid light green powder

Mechanism of Action

  • Absorbs near-infrared (NIR) laser energy
  • Converts photon energy into localized thermal activation
  • Promotes surface modification or marking reactions
  • Acts as a laser-sensitizing phase within polymer matrices

Functional Role

  • Laser activation enhancer
  • Thermal response initiator
  • Smoke interaction modifier in selected systems
  • Optical energy absorber

Application Windows

  • Laser marking of polymers
  • LDS (Laser Direct Structuring)
  • Laser-curable adhesive systems
  • Functional inks and coatings

When to Use

  • When laser interaction is required
  • When thermal activation is localized
  • When inorganic stability is required

When NOT to Use

  • When no laser or activation source is present
  • When optical transparency is required
  • When copper presence is restricted

Limitations & Failure Modes

  • Inactive without sufficient laser energy
  • Potential discoloration in light-colored polymers
  • Not suitable for food-contact systems
  • Performance dependent on dispersion quality

Alternatives & Trade-offs

  • Carbon black — higher loading required
  • ATO — conductive but less laser-responsive
  • SWCNT — higher cost, dispersion sensitive
  • Black TiO₂ — photothermal but lower activation efficiency

FAQ

Is BCHP a conductive filler?

No. It functions as a laser-responsive inorganic additive, not as an electrical conductor.

Does BCHP work without laser exposure?

No. Its functional effect depends on energy activation, typically NIR laser irradiation.

Application area
  • Laser Marking Additive: BCHP is used in applications requiring precise laser activation and marking on polymers, particularly for creating high-contrast, neutral gray markings in halogenated and non-halogenated plastics.
  • Fire-Safe Plastics: BCHP is utilized in fire-safe plastic formulations due to its smoke-suppressing properties when exposed to high-energy inputs like lasers and fire.
  • Selective Metallization: BCHP aids in the creation of metallic surfaces on polymers by triggering metal reduction during laser marking, enabling electroless plating processes.
  • Please access the application pages below for details.

    Last updated:

    In-depth application articles can be found in
  • BCHP Technical Insights