CRAYVALLAC® SLX

CRAYVALLAC® SLX is a high performance micronised amide wax rheology modifier designed for the low temperature manufacture of moisture curing methoxysilane systems, where processing temperatures typically lie within the range 60 - 90°C. CRAYVALLAC® SLX particles are converted to an interacting network of crystalline fibres. It is this network that gives rise to the shear thinning rheology. This shear thinning characteristic provides for a low viscosity at the shear rates associated with application by extrusion, and a very high viscosity under the low shear rates experienced after application. The net result is ease of application followed by excellent sag and slump resistance.

Principal: Arkema Rheology and Specialty Additives Group

Functions: Rheology Modifier

Chemical Family: Polyamides

Labeling Claims: Bacteria-free, Bio-based, Heavy Metal-free, No Added Alkylphenol Ethoxylates (APEO), Solvent-free

Physical Form: Powder

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Identification & Functionality

CASE Ingredients Functions
Chemical Family
Country of Origin
Function
Rheology Modifier
Product Code
MITM01589
Technologies
Product Families

Features & Benefits

CASE Ingredients Features
Labeling Claims
Key Benefits

Formulation

  •  Easy handling

Storage

  • Antisettling
  • In-can appearence
  • Syneresis resistance
  • Viscosity stability

Application

  • Gunnability
  • Slump resistance
  • Temperature resistance

Safer Solutions

  • APEO Free
  • Bacteria resistance
  • Heavy Metal Free
  • Solvent Free
Product Features

Adhesives & Sealants

  • Assembly
  • Other Adhesives
  • Sealants

Applications & Uses

Markets
Applications
Processing Information
  • The activation process constitutes the conversion of the CRAYVALLAC® SLX particles to an interacting network of crystalline fibres.
  • It is this network that gives rise to the shear thinning rheology.
  • This shear thinning characteristic provides for a low viscosity at the shear rates associated with application by extrusion, and a very high viscosity under the low shear rates experienced after application.
  • The net result is ease of application followed by excellent sag and slump resistance.
  • Activation at too low a temperature, or for too short a time, will result in the formation of an inefficient interacting network and consequently poor sag and slump resistance.
  • The successful manufacture of methoxysilane based sealants is very dependent on the careful control of moisture levels throughout manufacture and storage.
  • For this reason it is normal practice to pre-dry all pigments and extenders prior to dispersion with the methoxysilane polymer.
  • Alternatively, special grades of low moisture content ingredients may be used.
  • The use of vacuum processing is essentially there to prevent the take up of moisture during processing.
  • Due to the lower processing temperature used, the vacuum processing is not particularly efficient at removing unwanted water residues introduced with the raw materials.
  • Therefore a greater emphasis must be put on the pre-drying of pigments and extenders, or the purchase of special grades of low moisture content raw materials.
  • With moisture cured methoxysilane based sealants, we strongly recommend that all additives be quickly dispersed and not allowed to remain in direct contact with the resin component.
  • Prolonged contact may sometimes result in the formation of an insoluble fine skin which later appears as small particles in the final sealant.

Properties

Physical Form

Packaging & Availability

Packaging Type

Principal Information

Group Principal Number
S000003
Principal

Storage & Handling

Storage Conditions
  • It should be stored in the original containers in a dry place at temperatures between 5°C (41°F) and 30°C (86°F).
  • Avoid exposure to direct sunlight or frost.
  • In these conditions, this product should be used within 48 months from production.

Other

Appearance
Off white micronized powder
Color (SDS)
Off-white
Insoluble in (SDS)
Water
Item Number
Odor (SDS)
Odorless
Other Hazards
Handle in accordance with good industrial hygiene and safety practice.
USA/DOT UN Number
Not Applicable
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life48.0mo
Physical Properties
ValueUnitsTest Method / Conditions
Specific Gravity0.99-
Storage Temperature41.0-86.0°F
Material Composition
ValueUnitsTest Method / Conditions
Active Content100.0%
Solid Content100.0%
Application Information
ValueUnitsTest Method / Conditions
Dosage (Use Level)1.0-5.0%
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Autoignition Temperature (SDS)min. 752.0°F
Decomposition Temperature (SDS)min. 482.0°F
Specific Gravity (SDS)0.929-at 20°C