Overview of Akoma Crayvallac Ultra, Micro Powder Polyamide Wax Rheological Additive:
arkema CRAYVALLAC ULTRAIt is a new generation high-performance micronized polyamide rheological additive that provides excellent recoating properties for room temperature curing solvent based epoxy systems. arkema ULTRAThe main characteristics are:
Performance, its viscosity over time
Extend and gradually recover
Good recoating ability
Excellent anti sagging performance
Very good anti sinking performance
Excellent storage stability
arkema CRAYVALLAC ULTRAIt is specifically designed to overcome some of the shortcomings of the older generation of organic rheological agents, such as the problem of returning to coarse, false thickening, and the migration of dissolved components to the surface of the coating. Therefore, in strong solvent systems, the use ofarkema ULTRAThe formula system exhibits superior performance and excellent recoating ability.
Akoma Crayvallac Ultra, a micro powder polyamide wax rheology additive, recommended dosage:Anti sinking and anti current hanging: 0.5-1.5%
| Product Code | type | Addition amount (wt%) |
| crayvallac ultra | Polyamide wax | 0.5-1.5 |
| Product specifications | Other properties |
Particle size distribution (Malven Mastersizer)
Laser Particle Size Distribution Analyzer (CR 005) | Specific gravity (25 ℃, g/cm3), (CR006) | zero point nine eight |
DV.1 min
DV.9 max | 1.8µm
15.0µm | Bulk density, g/cm3,
(CR 016) | 0.4-0.6 |
| Capillary melting point determination (CR 003) | 121℃ | appearance | White powder |
Summary of the method for adding Akoma Crayvallac Ultra, a micro powder polyamide wax rheological additive:
Disperse at high speed together with the base material, dispersion temperature: 45-65 ℃ in aromatic hydrocarbon solvents/alcohols or mixed strong solvents.
Akoma Crayvallac Ultra, a micro powder polyamide wax rheological additive. Detailed addition method and steps:
arkema CRAYVALLAC ULTRAIt is best to add it to a high-speed disperser and use it for activation. Usually added together with resin during the grinding and filling stage. Maintaining a temperature of 45-65 ℃ during high-speed dispersion can ensurearkema C ULTRAFully activated, the optimal activation temperature is 55-65 ℃. After reaching the activation temperature, high-speed dispersion is still required for 20-30 minutes.
A high-speed disperser is the most ideal dispersing equipment because it can provide activationCRAYVALLAC ULTRAThe required shear force and temperature to fully activateCRAYVALLAC ULTRA. The activation process is a process that involvesarkema C ULTRAThe process of transforming from a powder state to a fibrous network structure with interactions. It is precisely this network structure that ultimately endows the system with shear thinning properties. This shear thinning characteristic provides the ability to maintain high viscosity under low shear conditions, thereby achieving excellent anti settling performance; During construction, that is, under high shear conditions, the viscosity of the system will decrease. The ultimate result is that the system has good anti sinking properties and is easy to construct.
After the construction is completed, the system returns to a low shear state, and the network structure in the system is re formed. The viscosity of the system gradually recovers over time. The process of gradually recovering viscosity over time is called "thixotropy", which enables the system to achieve good leveling and anti sagging performance after viscosity recovery.
Given the different formulation systems, production processes, and application fields, we strongly recommend usingCRAYVALLAC ULTRAConduct a comprehensive evaluation to ensure that it meets the requirements. In addition, when coating construction is carried out under poor ventilation conditions, or when the substrate temperature is too high, or during hot spraying, additional attention may be required.
arkema CRAYVALLAC SUPERStorage requirements:
arkema CRAYVALLAC ULTRAIt should be stored in the original packaging bag, placed in a dry environment with a temperature of 5-30 ℃, and protected from direct sunlight or freezing. The product is valid for four years when stored under the above conditions.
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