PURANOL D 220

Puranol D 220 is mainly used in the field of flexible foam blend system, elastomer, coatings, adhesives, etc.
Puranol D 220 is used in a wide range of PU elastomers, adhesives, coatings, including waterproof and elastic ones.
Puranol D 220 is used in the production of a wide range of PU elastomers, as well as adhesives, protective coatings, and sports court surfaces.

CAS Number: Not available / not assigned (trade mixture)
EC Number: Not available / not assigned
Molecular Formula: Not defined (mixture of oligomer chains)
Average Molecular Weight (Mw): ~2,000 g/mol

SYNONYMS:
Puranol D‑220, polyether polyol, polypropylene‑oxide based polyol, di‑functional polyol, CASE polyol, polyurethane polyol

Puranol D 220 is a 2000-molecular-weight polyether polyol based on propylene glycol and modified with propylene oxide.
Puranol D 220 is a 2000 molecular weight polypropylene glycol, is used in a wide range of applications: adhesives, elastic and waterproof coatings, and PU elastomers.

Puranol D 220 is a polypropylene glycol with a molecular weight of 2000.
Because Puranol D 220 is a proprietary polyol grade, the exact molecular distribution, monomer ratios (how much glycerin vs propylene glycol was used), branching, and chain-size distribution are not publicly disclosed.

These factors significantly influence Puranol D 220's behavior in PU systems (mechanical properties, cure kinetics, cross-linking), which is why formulators rely heavily on the supplier’s technical data, quality certificates (like COA), and SDS (safety data sheet) for each production batch.

Puranol D 220 is part of the Puranol line of polyether polyols manufactured.
This grade is specifically designed for non‑cellular polyurethane (PU) applications, such as elastomers, adhesives, coatings, sealants, and other CASE (Coatings, Adhesives, Sealants, Elastomers) formulations.

Puranol D 220's synthesis involves ring‑opening polymerization of propylene oxide (“epoxide”) on low molecular weight starter molecules — primarily propylene glycol and glycerin — which creates a polyether backbone with hydroxyl (–OH) end-groups.
Chemically, Puranol D 220 is not a single entity but a complex mixture of oligomeric chains.

These chains differ in length and branching, but on average the product has di-functional hydroxyl end groups (functionality ≈ 2), meaning each chain typically ends in two reactive –OH groups.
This di-functionality is critical for how the polyol reacts with isocyanates in PU synthesis: Puranol D 220 helps build relatively linear or lightly crosslinked polymer structures, depending on how the formulation is made.

One of the most important parameters for Puranol D 220 is its hydroxyl value, which is specified in the range of 54–58 mg KOH/g.
This indicates how many reactive –OH groups are available per unit mass — a moderate level of reactivity, suitable for systems where you don’t want very tight cross-linking or very fast cure.

Puranol D 220's average molecular weight of ~2,000 g/mol also plays into how the final polymer behaves: longer chains contribute to flexibility, elongation, and lower glass transition in some PU applications.
The viscosity of Puranol D 220 is relatively moderate: ~200–400 mPa·s at 25 °C, according to manufacturer data.

This makes Puranol D 220 reasonably easy to handle, pump, and mix into formulations.
Puranol D 220's water content is very low (≤ 0.05 % w/w), which is critical for PU chemistry because water reacts with isocyanates to produce CO₂ — that could lead to foaming or defects if moisture is too high.

The acid value is also very low (≤ 0.05 mg KOH/g), meaning there’s little free acid that might catalyze unwanted side reactions or degrade Puranol D 220.
Puranol D 220 is initiated with propylene glycol.

Puranol D 220 is synthesized with DMC catalyst.
Puranol D 220 has the advantages of strong reaction activity, low unsaturation, narrow molecular weight distribution, good molecular chain flexibility and so on.

Puranol D 220 is a polyether polyol produced, classified under their “Puranol D” product line for CASE (Coatings, Adhesives, Sealants, Elastomers) and industrial polyurethane systems.
Puranol D 220 is synthesized by ring‑opening polymerization of propylene oxide (“epoxide”) on starter molecules such as propylene glycol and glycerin.
Puranol D 220 is particularly suited for non‑cellular polyurethane applications, such as elastomers, adhesives, coatings, sealants, and waterproof coatings.

USES and APPLICATIONS of PURANOL D 220:
Uses of Puranol D 220: Polyurethane foams, Coatings, Adhesives, and Elastomers.
Puranol D 220 is used in a wide range of PU elastomers, adhesives, coatings, including waterproof and elastic ones.
Puranol D 220 is a polypropylene glycol with a molecular weight of 2000.

Puranol D 220 is used in the production of a wide range of PU elastomers, as well as adhesives, protective coatings, and sports court surfaces.
As with any product, Puranol D 220 must be tested before use for the above-mentioned applications.

Puranol D 220 is a 2000 molecular weight polypropylene glycol, is used in a wide range of applications: adhesives, elastic and waterproof coatings, and PU elastomers.
In practical terms, Puranol D 220 is often chosen by polyurethane formulators who need a balance: a polyol that gives good flexibility and mechanical properties, but without being overly reactive or causing high crosslink density.

Puranol D 220's polyether backbone gives good hydrolysis resistance (polyether-based PUs typically resist water-based degradation better than polyester-based ones), which is beneficial in many outdoor or high-moisture applications.
From a safety standpoint, Puranol D 220 behaves like many neutral polyether polyols: it is not highly toxic, but standard industrial precautions are required.

Applications / Uses of Puranol D 220: Polyurethane systems – elastomers, coatings, adhesives, sealants (CASE applications)
Puranol D 220 is mainly used in the field of flexible foam blend system, elastomer, coatings, adhesives, etc.

Applications of Puranol D 220: Consumer Goods — Footwear, Adhesives & Sealants — Other Adhesives & Sealants Applications, Paints & Coatings — Puranol D 220 is used in a wide range of PU elastomers, adhesives, coatings, including waterproof and elastic ones.Other Paints & Coatings Applications.

BENEFITS of PURANOL D 220:
*Good elastomeric and reinforcing properties
*Good compatibility with polybutadiene based polyols

REACTIVITY & FUNCTIONALITY of PURANOL D 220:
With a hydroxyl value in the 54–58 mg KOH/g range and di‑functional nature, Puranol D 220 provides a moderate level of reactivity.
Puranol D 220 works well when formulating with isocyanates to create polyurethane materials that require flexibility and strength but not extremely high crosslink density.

MECHANICAL AND PERFORMANCE ADVANTAGES of PURANOL D 220:
In elastomers, Puranol D 220 allows the resulting polymer to maintain good elasticity and durability.
In coatings, adhesives, and sealants, Puranol D 220 helps deliver balanced mechanical performance and good adhesion.
Because of Puranol D 220's polyether backbone, the final PU products may have good resistance to hydrolysis and environmental degradation.

PROCESSABILITY of PURANOL D 220:
Puranol D 220's relatively low viscosity (200–400 mPa·s) ensures it is easy to handle, pump, and blend with other components in a formulation.

PURITY & STABILITY of PURANOL D 220:
Very low water and acid values of Puranol D 220 help minimize side reactions (like CO₂ formation from water reacting with isocyanates) and minimize coloration or instability in the final polyurethane system.

Puranol D 220 is a moderate‑molecular‑weight, di‑functional polyether polyol made from propylene glycol and glycerin, with a hydroxyl value of 54–58 mg KOH/g and relatively low viscosity.
Puranol D 220 offers good processability and balanced reactivity for polyurethane systems such as elastomers, coatings, adhesives, and sealants.

Its low water and acid contents make Puranol D 220 especially suited for formulations where moisture or side reactions must be minimized, and its polyether backbone contributes to the durability and hydrolytic stability of the final polyurethane.
An amine-initiated Puranol D 220 provides catalytic behavior.

Puranol D 220 provides good elastomeric and reinforcing properties to polyurethane foams and two-component systems.
Puranol D 220 also offers good compatibility with polybutadiene (polyBD) and other hydrophobic polyols.

MARKETS of PURANOL D 220:
*Adhesives & Sealants,
*Consumer Goods,
*Paints & Coatings

STORAGE of PURANOL D 220:
Puranol D 220 is slightly hygroscopic and can absorb moisture.
During transportation of Puranol D 220, containers should be tightly closed and protected from contact with moisture and other materials that may adversely affect product quality.
At low temperatures, the viscosity of Puranol D 220 may increase significantly.
Storage of Puranol D 220 should be carried out at temperatures between 20 and 60°C.

SAFETY INSTRUCTIONS of PURANOL D 220:
Before using and storing Puranol D 220, consult the relevant literature.
Before working with Puranol D 220l, obtain information on its use, storage, and potential hazards from improper use.

PHYSICAL and CHEMICAL PROPERTIES of PURANOL D 220:
Hydroxyl value (OH number): ~ 54.0 – 58.0 mg KOH/g. 
Nominal functionality: ~ 2 (i.e., average ~2 hydroxyl end-groups per molecule) 
Average molecular weight (Mn): ~ 2,000 g/mol. 
Viscosity (25 °C): ~ 200–400 mPa•s (cP). 
Acid value: ≤ 0.05 mg KOH/g, very low acidity meaning few free acids. 
Color (APHA): ≤ 50 (relatively low color) 
Water content: ≤ 0.05 % w/w, meaning it is very dry, which is beneficial for PU formulations. 
Potassium (K⁺) Content: ≤3 ppm, indicating very low metallic impurity
Hydroxyl Number (mgKOH/g): 54–58

Viscosity at 25°C (mPa·s): 200–400
Mass Fraction of Water (%): no more than 0.05
pH: 5–7
Acid Number (mgKOH/g): no more than 0.05
Mass Fraction of Potassium Ions (ppm): no more than 3
Color (APHA): no more than 50
CAS Number: Not available / not assigned (trade mixture)
EC Number: Not available / not assigned
Molecular Formula: Not defined (mixture of oligomer chains)

Average Molecular Weight (Mw): ~2,000 g/mol
Hydroxyl Value (OH Number): 54–58 mg KOH/g
Functionality: ~2 (average number of –OH groups per molecule)
Viscosity (25 °C): 200–400 mPa·s
Acid Value: ≤0.05 mg KOH/g
Color (APHA): ≤50
Water Content: ≤0.05 % w/w
Potassium (K⁺) Content: ≤3 ppm
Raw Materials / Composition: Propylene glycol, glycerin, propylene oxide (oligomerized into polyether chains)

FIRST AID MEASURES of PURANOL D 220:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation: 
Fresh air.
*In case of skin contact: 
Take off immediately all contaminated clothing. 
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact: 
Rinse out with plenty of water. 
Call in ophthalmologist. 
Remove contact lenses.
*If swallowed:
After swallowing: 
Immediately make victim drink water (two glasses at most). 
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of PURANOL D 220:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains. 
Collect, bind, and pump off spills. 
Observe possible material restrictions. 
Take up dry. 
Dispose of properly. 
Clean up affected area.

FIRE FIGHTING MEASURES of PURANOL D 220:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2) 
Foam 
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of PURANOL D 220:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection. 
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A 
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of PURANOL D 220:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed. 
Dry.

STABILITY and REACTIVITY of PURANOL D 220:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available