CRAYVALLAC® SL

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Description

CRAYVALLAC® SL is a high-performance micronized amide wax rheology modifier specifically designed for the high-temperature manufacture of moisture-curing methoxysilane systems. Here are its typical characteristics and properties:

Nature: Polyamide
Appearance: Off-white micronized powder
Solid Content: 100%
Active Content: 100%
Specific Gravity: 0.99
Particle Size Distribution: DV. 1 min: 1.8 µm / DV. 9 max: 15.0 µm

Description:
CRAYVALLAC® SL particles form an interacting network of crystalline fibers upon activation, resulting in shear-thinning rheology. This characteristic provides low viscosity during application by extrusion and very high viscosity under low shear rates post-application, leading to ease of application followed by excellent sag and slump resistance.

Recommended Addition Level:
1-5% under heat and shear.

Standard Packaging:
Available in 15 kg bags. Other packaging options may be available upon request.

Handling & Storage:
Store 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. Use within 48 months from production under these conditions.

Processing Instructions:
Manufacture of methoxysilane-based sealants requires careful moisture level control. Pre-drying of pigments and extenders is recommended, or low moisture content ingredients may be used. Vacuum processing at elevated temperatures prevents moisture uptake and facilitates removal of unwanted water residues. Ensure additives are quickly dispersed and not in prolonged contact with the resin component to prevent skin formation.

Market:

Adhesives & Sealants
- Assembly
- Other Adhesives
- Sealants

Key Benefits:

Formulation: Easy handling.
Storage: Antisettling, in-can appearance, syneresis resistance, viscosity stability.
Application: Gunnability, slump resistance, temperature resistance.

Files

TDS_CRAYVALLAC®-SL_en_WW.pdf View

Application

Adhesives & Sealants

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Composition
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- Feldspar-group minerals: 87% or more by weight.
Hazards Identification
- Classification:
  - Specific target organ toxicity - repeated exposure, Category 2 (Lungs).
- Hazard Statements:
  - H373: May cause damage to organs (lungs) through prolonged or repeated exposure if inhaled.
- Precautionary Statements:
  - P260: Do not breathe dust.
  - P314: Get medical advice/attention if you feel unwell.
  - P501: Dispose of contents/container to an approved waste disposal plant.
Handling and Storage
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WALOCEL™ CRT 10000 G Sodium Carboxymethylcellulose is a specific type of sodium carboxymethylcellulose (CMC) produced by The Dow Chemical Company. Here's a detailed overview based on the provided sales specification:
Product Overview:
- Product Name: WALOCEL™ CRT 10000 G
- Chemical Name: Sodium Carboxymethylcellulose
- Specification Number: 000000127502
- Previous Specified Material: 00160302
- Trademark: WALOCEL™ (Trademark of The Dow Chemical Company)
Specifications and Testing Requirements:
1. Active Content (Dry Basis):
  - Minimum: 99.00%
  - Method: CE-55.4
  - Test Frequency: Audit basis
2. Substitution Degree:
  - Range: 0.82 — 0.95
  - Method: CE-28.4
3. Moisture Content (As Packaged):
  - Maximum: 8.0%
  - Method: CE-7.1
4. pH Value (1% Aqueous Solution):
  - Range: 6.5 — 8.5
  - Method: CE-8.1
5. Total Salt Content (Dry Basis):
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  - Method: CE-15.4
  - Test Frequency: Audit basis
6. Viscosity (Brookfield, LVT, SP.3, 30 RPM, 1% Aqueous Solution, Dry Basis, 25°C):
  - Range: 900 — 1500 mPa.s
  - Method: CE-5.15
Product Characteristics:
- Active Content: Indicates the amount of carboxymethylcellulose present in the product.
- Degree of Substitution: Refers to the extent to which the cellulose molecule has been substituted with carboxymethyl groups. This affects the solubility and viscosity.
- Moisture Content: The amount of water present in the product. This can affect the product’s handling and performance.
- pH Value: Measures the acidity or alkalinity of a 1% aqueous solution of the product.
- Total Salt Content: Indicates the amount of salt present, which can influence the viscosity and stability of the product.
- Viscosity: A measure of the product's thickness or resistance to flow in an aqueous solution. This is important for its functionality in various applications.
Usage and Safety:
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DOWANOL™ DPnP Glycol Ether (Dipropylene Glycol n-Propyl Ether) is a slow-evaporating glycol ether produced by The Dow Chemical Company. Here is a detailed overview of the product based on the provided information:
Product Overview:
- Product Name: DOWANOL™ DPnP Glycol Ether
- Chemical Formula: C3H7O[CH2(CH)CH3O]2H (Major isomer)
- CAS Number: 29911-27-1
Description:
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Physical Properties:
- Molecular Weight: 176.2 g/mol
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  - @ 25°C: 0.916 g/cm³ (7.65 lb/gal)
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- Specific Heat at 25°C: 1.94 J/g/°C
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- Evaporation Rate:
  - n-Butyl Acetate = 1.0: 0.014
  - Diethyl Ether = 1.0: 903
- Solubility at 25°C:
  - Solvent in Water: 17.2 g/100 g (15 wt%)
  - Water in Solvent: 22.5 g/100 g (18.5 wt%)
Hansen Solubility Parameters:
- Dispersion (d): 15.0 (J/cm³)^(1/2)
- Polar (p): 3 (J/cm³)^(1/2)
- Hydrogen Bonding (h): 9.6 (J/cm³)^(1/2)
Flammable Limits (Vol.% in Air):
- Lower: 0.68%
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Product Overview:
- Product Name: TEGO® Airex 902 W
- Manufacturer: Evonik Operations GmbH
Description:
TEGO® Airex 902 W is a highly effective and compatible deaerator emulsion based on polyether siloxane technology. It is particularly effective against both micro-foam and macro-foam.
Key Benefits:
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- Appearance: White thixotropic liquid
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CRAYVALLAC® SL

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CRAYVALLAC® SL

Manufacturer

Main Actions

Description

Files

Categories

Application

Add a review

Leave a Reply · Cancel reply

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