General agent of Arkema in China, Arkema la-1fifty, polyurethane waterproof coating crayvallac la-1fifty, rheological agent, as anti settling thixotropic agent Overview:
Arkema CRAYVALLAC LA-1fifty is a liquid rheology modifier dissolved in dimethyl sulfoxide for solvent based coatings.
arkema LA-1fifty is a post added rheological modifier dissolved in dimethyl sulfoxide. When added to the final coating system, dimethyl sulfoxide is diluted, causing the modified polyurea to crystallize into very fine fibers and form a three-dimensional network of interactions. This network endows the coating with rheological properties of shear thinning and viscosity recovery over time.
This can make the coating have both excellent anti settling properties and good workability. After construction, low shear forces dominate again, and the viscosity of the coating system undergoes a process of recovery over time as the network structure is re established. This time dependence, also known as thixotropy, endows the coating with excellent leveling properties.
In order to obtain arkema The maximum effect of CRAYVALLAC LA-150 requires avoiding excessive shearing to optimize the crystallization process. CRAYVALLAC LA-150 should be added after the pigment grinding stage and the coating is diluted to the final high shear viscosity. Adding pigments during the grinding stage or under other high shear conditions can disrupt crystallization and form a poorly interacting network. This leads to poor anti sinking and anti sagging performance. arkema The performance of LA-150 is highly dependent on the solvent polarity balance of the coating system, which is related to the resin and solvent.
Arkema CRAYVALLAC LA-150 should be slowly added to the coating under low to moderate shear conditions to ensure effective dispersion. Although effective stirring is required to ensure uniformity, it does not require an increase in temperature for activation. Add Arkema to low-level or non-polar systems LA-150 may cause immiscibility, which can be reflected in poor anti settling, anti sagging properties, or particle formation due to crystal aggregation. Therefore, the compatibility of the system must be checked, and if necessary, the solvent balance of the system must be optimized.
Given the different formulation systems, production processes, and application areas, we strongly recommend conducting a comprehensive evaluation when using the Arkema CRAYVALLAC LA-150 to ensure that it meets the requirements. Especially in low ventilation areas, when working with hot substrates or under high-temperature spraying conditions, special attention and evaluation are required.
Given the different formulation systems, production processes, and application fields, we strongly recommend using Arkema Conduct a comprehensive evaluation at LA-150 to ensure it meets the requirements. Especially in low ventilation areas, when working with hot substrates or under high-temperature spraying conditions, special attention and evaluation are required.
arkema LA-150 product features:
• Flow type can add liquid afterwards
• Activation is temperature independent
• Does not contain N-nitromethylpyrrolidone
• Endow the system with thixotropy - capable of shear thinning, viscosity can recover over time
• Very good anti sinking and anti sagging properties
• Good recoating ability
• Good gloss retention
| Product Code | Other properties | Addition amount (wt%) |
| crayvallac la-150 | Active ingredient content (%) | solvent | 0.1-1.0 |
| 50 | DMSO* |
arkema LA-150Attribute:* DMSO=dimethyl sulfoxide
Viscosity @ 25 ℃, mPa. s at 10000s-1 (ISO 3219) 300-900
Color, Grignard tube (ISO 4630)<seven
arkema LA-150Other properties：
Non volatile matter content,% @ 150 ℃ (ISO 3251) 52±1
Flash point, ℃ (ISO 3679) >seventy
Density @ 25 ℃, g/cm3 (ISO 2811) one point one one
arkema LA-150Recommended scope：
Anti sinking 0.3-2.0%
Anti current hanging 0.3-2.0%
remarks:The amount of addition is related to the coating system
The following example is a well solvent balanced coating system:
Resin Solvent system
Solid epoxy Xylene/butanol 3:1
Short oil alcohol acid Xylene/ethylene glycol butyl ether 4:1
Acrylic acid 2K NISO Xylene/butyl acetate/isobutanol/
3-Ethoxypropionic acid ethyl ester 4:4:1:1
arkema LA-150Product safety:
Before handling the Arkema CRAYVALLAC LA-150, it is necessary to carefully review the MSDS (Material Safety Data Sheet) of this product, understand and master safety, health, and environmental information, and take personal safety protection measures. MSDS can be obtained from our customer service team.
his product cannot be used for the production of food, drugs, medical equipment, or cosmetics, or for the production of products that come into contact with food, drugs, medical equipment, or cosmetics. Given that government regulations and usage restrictions may change, users should be aware of whether this product complies with current laws and regulations before use.
The Arkema Coatings Resin Department strongly requires users to read, understand and master the MSDS, and inform its employees, contract performers and customers to distribute the MSDS of this product, and require them to do the same actions before use to ensure safety.
arkema LA-150Transportation:
Arkema CRAYVALLAC LA-150 should be stored in a sealed container. Otherwise, once the moisture in the air is absorbed, it will cause the crystallization of modified polyurea. CRAYVALLAC LA-150 should be placed in a dry environment with a temperature of 5-30 ℃, avoiding direct sunlight or freezing. The product is valid for one year when stored under the above conditions.
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