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ADDITOL® MBF is a radical photoinitiator used to facilitate the curing of formulations containing unsaturated materials when exposed to UV light. Here's an overview based on the provided technical datasheet:

Introduction: ADDITOL® MBF functions as a radical photoinitiator that undergoes a photochemical reaction when exposed to UV light, generating radicals that initiate polymerization in systems containing unsaturated groups.

Performance Highlights:

• • Low viscosity liquid at room temperature.
  • Mild odor.
  • UV curable products containing ADDITOL® MBF exhibit very good surface cure and limited yellowing.

Suggested Applications: Typically used at levels of 1 - 4% by weight based on the reactive components of the formulation, ADDITOL® MBF finds applications in clear coats for plastic, wood, and metal; overprint varnishes; paper upgrading; and inks and pigmented coatings when combined with other photoinitiators.

Precautions: It's recommended to review the Safety Data Sheet (SDS) for information on identified hazards, recommended personal protective equipment, and procedures before using ADDITOL® MBF.

Storage and Handling: Store the material in a dry area away from direct sunlight, and prevent exposure to UV or visible light. Keep containers closed and protected from physical damage. The recommended storage temperature range can be found in the SDS.

Typical Physical Properties:

• • Appearance: Clear yellow liquid
  • Assay: ≥ 97.5%
  • Density at 25°C: 1.16 g/cm³
  • Extinction coefficients: 256 nm (68 liters gram-1 cm-1), 344 nm (0.35)
  • Viscosity at 25°C: ~5 mPa.s
  • Molecular Weight: 164

ADDITOL® MBF facilitates the UV curing process by promoting polymerization, leading to the development of various coatings and inks with desirable properties.

ADDITOL® DMMTA is a radical photoinitiator primarily used in formulations containing unsaturated materials such as acrylates, methacrylates, vinyls, and unsaturated polyesters. Here's a breakdown based on the provided technical datasheet:

Type: Alpha cleavage photoinitiator.

Introduction: ADDITOL® DMMTA undergoes a photochemical reaction upon exposure to UV light, generating radicals that initiate polymerization through the unsaturated groups present in the system. It can be used alone or in combination with other photoinitiators.

Performance Highlights:

• • Good solubility and low volatility.
  • UV curable formulated products containing ADDITOL® DMMTA exhibit good surface cure and through cure in pigmented systems.

Suggested Applications:

• • Typically used at levels of 2-4% by weight based on the reactive components of the formulation.
  • Addition of 0.2 - 0.4% ADDITOL® ITX can significantly improve reactivity.
  • Applications include flexographic inks, offset inks, screen inks, and pigmented coatings.

Specifications:

• • Appearance: White crystalline.
  • Melting point: 72 - 76°C.
  • Purity: Minimum 99%.

Typical Physical Properties:

• • Volatiles: < 0.5%.
  • Molecular Weight: 279.4.
  • Extinction coefficients: 230 nm: 28.921 (litres gram^-1 cm^-1), 304 nm: 65.505.

Precautions: Refer to the Safety Data Sheet (SDS) for identified hazards, recommended personal protective equipment, and procedures before use.

Storage and Handling:

• • Store in a dry area out of direct sunlight.
  • Prevent exposure to UV or visible light.
  • Keep containers closed and protect from physical damage.
  • See the SDS for the recommended storage temperature range for ADDITOL® DMMTA.

ADDITOL® DMMTA facilitates UV curing processes, particularly in pigmented coatings and inks, by initiating polymerization reactions efficiently in UV-curable formulations.