AQUACER 597

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:

DOWANOL™ DPnP is characterized by a slower evaporation rate compared to DOWANOL™ PnP glycol ether and is slightly more hydrophobic. It has a mid-range balance between hydrophobic and hydrophilic properties and offers significant water solubility. It is highly effective as a coalescent in coatings, providing excellent film properties and compatibility with hydrophobic materials.

Physical Properties:

• Molecular Weight: 176.2 g/mol
• Boiling Point: 213°C (415°F)
• Flash Point (Setaflash Closed Cup): 88°C (190°F)
• Freezing Point: <-75°C (<-103°F)
• Vapor Pressure at 20°C: 0.08 mmHg (0.11 mbar)
• Specific Gravity (25/25°C): 0.919
• Density:
  • @ 20°C: 0.921 g/cm³ (7.68 lb/gal)
  • @ 25°C: 0.916 g/cm³ (7.65 lb/gal)
• Viscosity at 25°C: 11.4 cP (mPa•s)
• Surface Tension at 25°C: 27.8 dynes/cm (mN/m)
• Specific Heat at 25°C: 1.94 J/g/°C
• Heat of Vaporization at Normal Boiling Point: 265 J/g
• Net Heat of Combustion at 25°C: 29.7 kJ/g
• Autoignition Temperature: 205°C (401°F)
• 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%

Applications:

• Coalescent for Water-Borne Latex Coatings: Enhances film formation and performance.
• Active Solvent for Solvent-Borne Coatings: Provides good solvency and compatibility with various materials.

Features:

• Colorless
• Low odor
• Moderately soluble in water (19 ml/100 ml)
• Good chemical stability
• Excellent solvent properties
• Efficient surface tension reduction
• Low toxicity
• Wide range of applications

Desmodur® BL 3175 SN is a blocked, aliphatic polyisocyanate based on hexamethylene diisocyanate (HDI), primarily used in the formulation of lightfast, one-component polyurethane stoving coatings and as an additive in conventional stoving systems to enhance flexibility and adhesion. Below are its key details:

Product Overview:

• Trade Name: Desmodur® BL 3175 SN
• Type: Blocked aliphatic polyisocyanate based on HDI
• Form: Approximately 75% solution in Solvent Naphtha® 100

Key Specifications:

• Non-volatile content: 75 ± 2 % (ISO 3251)
• Viscosity at 23 °C: 3,300 ± 400 mPa·s (ISO 3219/A.3)
• Color value (Hazen): ≤ 60 (EN 1557)
• Free NCO content, modified: ≤ 0.2 % (ISO 11909)
• Blocked NCO content: Approx. 11.1 %
• Equivalent weight: Approx. 380
• Flash point: Approx. 45 °C (DIN 53213/1)
• Density at 20 °C: Approx. 1.06 g/ml (DIN EN ISO 2811)

Solubility and Thinnability:

• Thinnable to 40% solids with ketones, esters, ether esters, and aromatics.
• Thinnable to 60% solids with higher boiling aromatics such as Solvent Naphtha® 100 and 150.
• Incompatible with aliphatic hydrocarbons.

Compatibility:

• Compatible with Desmophen® grades (651, 670, 680, 690, RD 181, A 160) and various polyacrylates.
• Can be combined with various plasticizers (e.g., phosphoric acid esters, sulphonic acid esters, adipic acid esters, phthalic acid esters).

Applications:

• Main Use: Hardener in colorfast and weather-stable, one-component polyurethane coatings.
• Industrial Applications: High-grade industrial finishes (e.g., electrical appliances, small components, can coatings, coil coatings) and automotive primer surfacers and topcoats.
• Stoving Cycles:
  • Without catalyst: 160 °C for 60 min, 180 °C for 15 min, 200 °C for 7 min.
  • With catalyst (DBTL): 130 °C for 60 min, 150 °C for 15 min, 175 °C for 7 min.
• Special Note: Yellowing may occur at temperatures above 160 °C.

Storage and Handling:

• Storage Conditions:
  • Temperature: 0 - 30 °C.
  • Protect from moisture, heat, and foreign material.
• Shelf Life: Nine months from the date of shipment, provided it is stored as recommended.
• Storage Note: Higher temperatures increase color and viscosity, while lower temperatures may cause reversible solidification.

Dowanol PM, or Propylene Glycol Methyl Ether, is a solvent known for its fast evaporation rate and strong solvency properties. It belongs to the Dowanol glycol ether family and is widely used in various industrial applications including coatings, cleaning formulations, printing inks, and agricultural products.

1. Properties:
   • Boiling Point: 120°C (248°F)
   • Flash Point: 31°C (88°F)
   • Density: 0.921 g/cm³ @ 25°C
   • Evaporation Rate: 0.62 (n-butyl acetate = 1.0)
   • Solubility: Highly soluble in water
2. Applications:
   • Active solvent in coatings and cleaning formulations
   • Used in epoxy and high solids acrylic systems
   • Coupling agent in ink formulations (both solvent-based and water-based)
   • Solvent for household and industrial cleaners
   • Carrier solvent for inks (e.g., ball point and felt tip writing pens)
3. Other Characteristics:
   • High dilution ratio
   • Low viscosity
   • High solvency power
   • Acts as a coupling agent
4. Safety and Handling:
   • Users are advised to consult the Material Safety Data Sheet (MSDS) for detailed safety guidelines and handling instructions.
5. Regulatory Information:
   • It lists various regulatory classifications and numbers for different regions (e.g., CAS Number, TSCA, EINECS).

In summary, Propylene Glycol Methyl Ether (PM) is a versatile solvent known for its ability to dissolve various substances effectively, making it suitable for a wide range of industrial and commercial applications, particularly in coatings, inks, and cleaners.

DOWANOL™ PnB Glycol Ether is a chemical compound with the chemical formula C4H9OCH2CH(CH3)OH, primarily used as a solvent and coupling agent in various industries. It is a fast-evaporating, hydrophobic glycol ether known for its high solvency and excellent coupling abilities. Some of its key properties and applications are:

Key Properties:

• Molecular Weight: 132.2 g/mol
• Boiling Point: 171 °C (340 °F) at 760 mmHg, 1.01 ar
• Flash Point (Setaflash Closed Cup): 63 °C (145 °F)
• Freezing Point: < -80 °C (< -112 °F)
• Vapor Pressure at 20°C: 0.85 mmHg (1.05 mmHg at 25°C)
• Specific Gravity (20/20°C): 0.878
• Liquid Density at 20°C: 0.879 g/cm3
• Vapor Density (air = 1): 4.6
• Viscosity at 25°C: 2.8 cP or mPa•s
• Surface Tension at 20°C: 27.5 dynes/cm or mN/m
• Specific Heat at 25°C: 1.98 J/g/°C
• Heat of Vaporization at Normal Boiling Point: 320 J/g
• Net Heat of Combustion at 25°C: 31.4
• Autoignition Temperature: 260 °C (500 °F)
• Evaporation Rate (N-butyl Acetate = 1.0): 0.093
• Solubility in Water at 20°C: 52 g/L
• Hansen Solubility Parameters:
  + Dispersion: 14.9 (J/cm3)1/2
  + Polar: 4.9 (J/cm3)1/2
  + Hydrogen Bonding: 10.7 (J/cm3)1/2
• Partition Coefficient, N-octanol/Water (Log Pow): 1.2
• Flammable Limits (Vol.% in Air):
  + Lower: 1.1
  + Upper: 8.4

Applications:

• Coupling agent and solvent in household and industrial cleaners, grease and paint removers, metal cleaners, and hard surface cleaners.
• Effective coupling agent and efficient solvent for water-reducible coatings.
• Effective coalescent for lowering minimum film formation temperature (MFFT) in waterborne latex coatings.
• Active solvent for solvent-based coatings.
• Chemical intermediate for the production of epoxides, acid ester derivatives, solvents, and plasticizers.
• Effective coupling agent in water-based agricultural formulations.

Handling Precautions:

Product safety information required for safe use is not included in this document. Before handling, read product and safety data sheets and container labels for safe use, physical and health hazard information.

Health and Environmental Information:

Dow has an extensive Product Stewardship organization and a team of product safety and regulatory compliance specialists available in each area. For further information, visit their website or consult your local Dow representative.