PHENODUR PR 521/60B

PHENODUR PR 521/60B is a high-reactivity phenolic resin designed for heat-curing metal packaging coatings.
PHENODUR PR 521/60B's compatibility with epoxy and polyester systems makes it useful for coatings that need strong resistance to food, oils, solvents, and chemicals.
PHENODUR PR 521/60B is especially valuable when a BADGE-NI or BPA-NI coating formulation needs faster curing performance and durable film protection.

Synonyms: Phenolic Resin Solution, Heat-Curing Phenolic Resin, Unplasticized Phenolic Resin, Phenol Formaldehyde Resin, Resol Phenolic Resin, PHENODUR PR 521, PHENODUR 521/60B, Phenolic Crosslinker, Phenolic Coating Resin, Metal Packaging Coating Resin, Can Coating Phenolic Resin, BPA-NI Phenolic Resin, BADGE-NI Phenolic Resin, Butanol Phenolic Resin Solution, Solventborne Phenolic Resin

PHENODUR PR 521 is a heat curing, unplasticized phenolic resin.
PHENODUR PR 521/60B's higher reactive version of PHENODUR PR 516, for BADGE- and BPA-NI usage.

PHENODUR PR 521/60B is a heat-curing, unplasticized phenolic resin supplied as a solution in butanol.
PHENODUR PR 521/60B is a higher-reactive version of PHENODUR PR 516 and is designed for BADGE-NI and BPA-NI coating systems.
PHENODUR PR 521/60B is mainly used as a phenolic crosslinker / resol coating resin in industrial metal and packaging coating applications.

PHENODUR PR 521/60B is a heat curing, unplasticized phenolic resin.
PHENODUR PR 521/60B is suitable for low temperature curing interior and exterior coatings of metal packaging containers employed in the food industry such as collapsible tubes, cans and containers for water, oils & food.

PHENODUR PR 521/60B provides very good resistance against chemicals, mineral oils and food.
PHENODUR PR 521/60B is compatible with high molecular weight epoxide resins and polyester resins.

PHENODUR PR 521/60B also offers resistance against acids, alkaline, organic solvents and food.
PHENODUR PR 521/60B has a shelf life of 24 months.
PHENODUR PR 521/60B's form of delivery is 60% in butanol (60B).

PHENODUR PR 516/60B is a curable, unplasticized phenolic resin.
PHENODUR PR 521/60B offers very good resistance against chemical, mineral oils and food.

PHENODUR PR 521/60B exhibits excellent adhesion, hardness and flexibility.
Coatings based on PHENODUR PR 516/60B are preferably used for the interior coating of metal packaging goods.
PHENODUR PR 521/60B can be stored at 25°C for 365 days.

Uses of PHENODUR PR 521/60B:
PHENODUR PR 521/60B is used in heat-curing interior and exterior coatings for metal packaging containers.
PHENODUR PR 521/60B is suitable for food-industry packaging systems such as collapsible tubes, cans, and containers for water, oils, and food.
PHENODUR PR 521/60B can be combined with high molecular weight epoxide resins and polyester resins to obtain coatings with strong resistance to chemicals, mineral oils, acids, alkalis, organic solvents, and food contact media.

In combination with high molecular weight epoxy resins for low temperature curing interior and exterior coatings of metal packaging containers employed in the food industry.
Usable in epoxy‐free (=BADGE&BisA‐free) formulas with polyester resins.
Very good resistance against chemicals, mineral oils and food.

Heat curable phenolic/polyester resin combinations and phenolic/epoxide resin combinations.
Such systems are suitable to formulates lightly golden colored, heat curing coatings for the interior coating of metal packaging goods like collapsible tubes, cans and containers for water,oils and food.
The coatings resist to a great variety of acids, alkaline, organic solvents and food.

Dilutability and Compatibility of PHENODUR PR 521/60B:
PHENODUR PR 521/60B is unlimited dilutable with alcohols, esters and ketones.
PHENODUR PR 521/60B is limited diluteable with aromatic and aliphatic hydrocarbons.
PHENODUR PR 521/60B is compatible with high molecular weight epoxide resins and polyester resins.

Processing of PHENODUR PR 521/60B:
In addition to the standardized curing conditions for metal packaging coatings of approx. 10 ‐ 12 minutes/200°C, combinations of high molecular weight epoxide resins and PHENODUR PR 521/60B in the classical ratios from 60:40 (solid/solid) to 90:10 (s/s), can already be cured from 170° Conwards.
Acidic catalysts, like Cycat XK 406 Ninamounts of 2 ‐ 5% calculated on total binder solid, can accelerate the curing speed.

In multiple layer coatings, the first coats are not subjected to the full cure, the coating system as a whole is completely cured only after the last coat has been applied.
In case of surface defects, more likely with catalyzed systems, the addition of approximately 1 ‐3% of a melamine resin like Cymel 688 (f.o.d. on total weight), acts as an excellent flow agent.
The additives Additol XL 480, Modaflow Resin and Modaflow 2100 can help to improve the leveling further.

The light golden colour of the cured film can be tinted with a coloring resin like PHENODUR PR 308 towards a so called "goldlacquer".

Stability and Reactivity of PHENODUR PR 521/60B:

Chemical stability:
PHENODUR PR 521/60B is expected to be stable under recommended handling and storage conditions.

Reactivity:
PHENODUR PR 521/60B is a heat-curing phenolic resin and reacts during curing with suitable backbone resins such as epoxy or polyester systems.

Conditions to avoid:
Excessive heat, open flames, sparks, static discharge, poor ventilation, contamination, and unsuitable storage conditions should be avoided.

Incompatible materials:
Strong oxidizing agents, strong acids, strong bases, and highly reactive chemicals should be avoided.

Hazardous decomposition products:
Thermal decomposition or fire may produce carbon oxides, phenolic fumes, and solvent vapors.

Handling and Storage of PHENODUR PR 521/60B:

Handling:
PHENODUR PR 521/60B should be handled according to good industrial hygiene and solventborne resin handling practices.

Safe handling:
Avoid inhalation of vapors and avoid contact with eyes, skin, and clothing.

Ventilation:
Use good ventilation during mixing, coating formulation, and application.

Ignition control:
Keep away from heat, sparks, open flames, hot surfaces, and static discharge sources.

Storage:
Store in tightly closed original containers in a cool, dry, and well-ventilated area.

Storage protection:
Protect from direct sunlight, heat, moisture contamination, and incompatible chemicals.

First Aid Measures of PHENODUR PR 521/60B:

Inhalation:
Move the person to fresh air and keep them comfortable for breathing.

Skin contact:
Wash affected skin with water and mild soap.

Eye contact:
Rinse carefully with plenty of water for several minutes.

Ingestion:
Rinse mouth with water and seek medical advice if discomfort occurs.

Important note:
Because the product is solventborne, do not induce vomiting unless instructed by medical personnel.

Firefighting Measures of PHENODUR PR 521/60B:

Suitable extinguishing media:
Foam, dry chemical powder, carbon dioxide, or water spray may be used.

Fire hazards:
Solvent vapors may form flammable mixtures with air.

Special hazards:
Heating or fire may generate irritating fumes, phenolic decomposition products, and carbon oxides.

Protective equipment:
Firefighters should wear suitable protective clothing and self-contained breathing apparatus.

Accidental Release Measures of PHENODUR PR 521/60B:

Personal precautions:
Avoid breathing vapors and avoid direct contact with skin and eyes.

Ignition precautions:
Remove ignition sources and prevent static discharge.

Environmental precautions:
Prevent the product from entering drains, soil, or surface waters.

Cleanup method:
Absorb with inert material such as sand, earth, or universal absorbent.

Disposal:
Collect in suitable containers and dispose of according to local regulations.

Exposure Controls / Personal Protection of PHENODUR PR 521/60B:

Engineering controls:
Use local exhaust ventilation and solvent-safe equipment where necessary.

Eye protection:
Safety glasses or chemical goggles are recommended.

Hand protection:
Solvent-resistant gloves are recommended.

Skin protection:
Protective work clothing is recommended.

Respiratory protection:
Use suitable organic vapor respiratory protection if ventilation is insufficient.

Hygiene measures:
Wash hands after handling and before eating, drinking, or smoking.

Properties of PHENODUR PR 521/60B:
Form of delivery: 60% in butanol
Solvent: Butanol
Product family: Phenol formaldehyde resin
Chemical family: Phenol formaldehyde
Curing behavior: Heat curing