Overview of Arkema Crayvallac SLT, Micro Powder Polyamide Wax Rheological Additive:
arkema CRAYVALLAC SLTIt is a high-performance micronized polyamide rheological additive developed for moisture cured MS sealant produced at low temperatures.CRAYVALLAC SLTThe main characteristics are:
100% active ingredient
Can be effectively activated at 30-80 ℃
Reduce production cycle
Endowing the system with shear thinning rheological properties
Very good extrusion performance
Excellent anti sagging and anti collapse performance
Small impact on modulus
Excellent storage stability
arkema CRAYVALLAC SLTMoisture cured MS adhesive also suitable for low-temperature production.
Arkema Crayvallac SLT, recommended dosage of micro powder polyamide wax rheology additive:For single component moisture cured MS sealant, excellent collapse and sagging control performance can be achieved based on 1-5% of the total formula dosage.
| Product Code | type | Addition amount (wt%) |
| crayvallac slt | Polyamide wax | 2. 0-5. 0 |
| Product specifications | Other properties |
Particle size distribution (Malven Mastersizer)
Laser Particle Size Distribution Analyzer (CR 005) | Specific gravity (25 ℃, g/cm3),
(CR 006) | zero point nine nine |
DV.1 min
DV.9 max | 1.6µm
15.5µm | Bulk density, g/cm3,
(CR 016) | 0.4-0.6 |
| 121-135℃ | appearance | Grey white powder |
Summary of Arkema Crayvallac SLT, Micro powder Polyamide Wax Rheological Additive Method:
Add high-speed dispersion together with pigment fillers, with an activation temperature of 30-80 ° C
Arkema Crayvallac SLT, a micro powder polyamide wax rheological additive, detailed addition method and steps:
Arkema CRAYVALLAC SLTIt is a high-performance micronized polyamide rheological additive developed for low temperature production of single component MS sealant, usually added at a temperature between 30-80 ℃.
In the moisture cured MS sealant formula,Arkema SLTIt is best to add MS polymer and plasticizer together in the initial stage to a high-speed dispersion equipment with a vacuum device, and then add pigment fillers. During the high-speed dispersion process in vacuum, the system can be heated up (usually up to 50 ℃ or above) through high shear action, which canCRAYVALLAC SLTFully activated, this process is usually maintained for about 30 minutes, or to achieve the desired dispersion effect and qualified moisture content (usually<800ppm). Next, the system is cooled to a temperature at which the desiccant, adhesion promoter, and catalyst can be safely added.
The activation process is a process that involves Arkema SLT The 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. Activation at too low a temperature or insufficient activation time will result in ineffective network structure formation and poor resistance to sagging and collapse.
The successful production of MS sealant relies heavily on the control of moisture content throughout the entire production and storage process. For this reason, all pigments and fillers are usually preheated before being added to MS polymers. Similarly, some special components with low moisture content may be used.
The vacuuming process during the heating process has two key functions: preventing the inhalation of moisture and removing residual moisture from the raw materials.
For moisture cured MS sealants, it is particularly recommended to quickly disperse all additives and not allow direct contact between additives and resin components. Extended contact may result in insoluble crusts that appear as small particles in the final sealant.
Given the different formulation systems, production processes, and application fields, we strongly recommend using arkema SLT Conduct a comprehensive evaluation to ensure that it meets the requirements. Additionally, we do not recommend CRAYVALLAC SLT Used in paint systems.
Arkema CRAYVALLAC SLXStorage requirements:
Arkema CRAYVALLAC SLTIt 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.
Arkema Crayvallac SLT, a micro powder polyamide wax rheology additive, is mainly applied in the following fields:
● Compared with SLX, the activation temperature can be lower, and it is also suitable for sealants and adhesives such as MS, SPUR, STPE, and epoxy, with good shear thinning rheological properties.
● Can shorten the production cycle.
● Excellent anti sagging, anti collapse, and storage stability performance.
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