PHENODUR PR 263/70B

PHENODUR PR 263/70B is a curable phenolic resin designed for corrosion-protective wash primer and shop primer systems.
PHENODUR PR 263/70B's low viscosity and strong pigment wetting ability help produce primers with good hiding power, filling power, and surface coverage.
PHENODUR PR 263/70B is used as a binder in corrosion protection and formulate wash- and shop primer in combination with polyvinyl butyral.

Synonyms: PHENODUR PR 263/70B, PHENODUR PR 263/70B, PHENODUR PR 263/70B, PHENODUR PR 263 70B, PHENODUR PR 263, PR 263/70B, Curable phenolic resin, Phenolic resin solution, Phenol-formaldehyde resin, Phenol formaldehyde resin solution, Resol phenolic resin, Thermosetting phenolic resin, Unplasticized phenolic resin, Butanol-based phenolic resin, Phenolic binder resin, Primer binder resin, Wash primer phenolic resin, Shop primer phenolic resin, Corrosion-protection phenolic resin, Polyvinyl butyral-compatible phenolic resin, PVB-compatible phenolic resin, Pigment-wetting phenolic resin, Coating binder resin, Solventborne phenolic resin

PHENODUR PR 263/70B is a curable phenolic resin developed as a binder for shop- and washprimers.
PHENODUR PR 263/70B has excellent pigment wetting properties.

PHENODUR PR 263/70B is a curable phenolic resin.
PHENODUR PR 263/70B is used as a binder in corrosion protection and formulate wash- and shop primer in combination with polyvinyl butyral.

PHENODUR PR 263/70B exhibits low viscosity and good pigment wetting properties.
PHENODUR PR 263/70B imparts good hiding & filling power and offers excellent water resistance.
PHENODUR PR 263/70B can be stored at 25°C for 365 days.

PHENODUR PR 263/70B serves as a curable phenolic resin designed as a binder for shop- and washprimers, particularly excelling in pigment wetting properties.
PHENODUR PR 263/70B functions as a crosslinking agent and finds applications in clearcoat and primer formulations.
Notably, PHENODUR PR 263/70B is labeled as Bisphenol A-free and boasts features such as good pigment wetting, improved gap-filling properties, and the enhancement of coating hiding power, all while maintaining low viscosity.

PHENODUR PR 263/70B is a curable phenolic resin supplied at approximately 70% in butanol.
PHENODUR PR 263/70B is developed mainly as a binder for shop primers and wash primers.

PHENODUR PR 263/70B has low viscosity and excellent pigment wetting properties, which help improve hiding power and filling power in primer formulations.
Primers based on PHENODUR PR 263/70B show excellent water resistance and corrosion protection.

Applications of PHENODUR PR 263/70B:
PHENODUR PR 263/70B is used mainly in corrosion protection primers, especially wash primers and shop primers.
PHENODUR PR 263/70B is commonly combined with polyvinyl butyral, usually at PHENODUR PR 263 to PVB ratios between 25:75 and 50:50 on solids.

PHENODUR PR 263/70B can be used in one-component or two-component wash primer systems.
PHENODUR PR 263/70B is also suitable for clear or pigmented coatings on rigid substrates where benzene, fuel, and oil resistance are required.
PHENODUR PR 263/70B may be used as a grinding medium for pigments before polyvinyl butyral is added.

Properties and Uses of PHENODUR PR 263/70B:

Corrosion protection:
PHENODUR PR 263 is preferably used to formulate wash- and shopprimer in combination with polyvinylbutyral.
The ratio between PHENODUR PR 263 and PVB is usual between 25 : 75 and 50 : 50 (solid on solid).

Such washprimer can be formulated as 1- or 2-component systems.
Because of its low viscosity and good pigment wetting properties, PHENODUR PR 263 imparts good hiding and filling power.

Primers based on PHENODUR PR 263 show excellent water resistance and corrosion protection.
Benzene, fuel and oil resistant coatings PHENODUR PR 263 is a suitable solebinder (with the addition of 3 - 5% phosphoric acid (85%) for clear or pigmented coatings on rigid substrates.

Such coatings show after a few days of air-drying a good resistance against fuels, benzene and oils.
This coating material can be forced dried too (e.g. 30 min/100 °C) and plastified through the addition of approx. 20 - 30% polyvinylbutyral, (calculated on solid resin).

Processing of PHENODUR PR 263/70B:

Pigmentation:
PHENODUR PR 263 has excellent pigment wetting properties and is used preferably as grinding medium to which the polyvinylbutyral is added after the pigment wetting process.
Zinc phosphates and chromates are partly included in the chemical reaction of the wash primer`s curing process, thereby improving the quality to the primer with regard to weather resistance.
Any other extenders and pigments employed should be resistant to phosphoric acid. 

Stoving conditions:
Depending on the form of use and required coating thickness, the stoving conditions are between 30 and 10 minutes at 180 - 220°C.
The upper temperature limit where over stoving begins to occur and flexibilty accordingly starts to decline is 220 °C.

For thin film such as can coatings, conditions of 10 - 15 min/190 - 200 °C are adequate, or 90 s/265 °C (shock curing).
Good resistance to chemicals is obtained as from 190 °C onwards. 

Acid catalysis:

a) One pack system:
about 5 % phosphoric acid (85 %), calculated on total binders (solid);

b) Two-pack systems:
about 5 - 10 % phosphoric acid (85 %), calculated on total binders (solid).

An excess of more than 10 % phosphoric acid may promote subcoating rust development.
To avoid the processing difficulties that may occur when the paint formulation is mixed with phosphoric acid it has been found useful to dilute the acid in advance with n-butanol in a ratio of about 3 : 1.
Since PHENODUR PR 263 is severely discoloured by dissolved metall ions, especially those of iron, it is advisable to use iron free phosphoric acid (85 %).

Distinguishing Features:
PHENODUR PR 263 is specially developed as binder for shop- and washprimers.
PHENODUR PR 263 differs from Beckopox EM 460, wich has been developed for the same purpose, in being faster drying and less yellowing resistant

Stability and Reactivity of PHENODUR PR 263/70B:

Chemical stability:
PHENODUR PR 263/70B is stable under normal recommended handling and storage conditions.

Reactivity:
PHENODUR PR 263/70B is a curable phenolic resin resole and may react during curing or crosslinking under coating formulation conditions.
PHENODUR PR 263/70B should be handled as a reactive coating resin and mixed only under controlled processing conditions. The 2026 SDS identifies it as “Phenolic Resin Resole.”

Conditions to avoid:
Heat, sparks, open flames, hot surfaces, direct sunlight, poor ventilation, and static discharge should be avoided.

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

Hazardous decomposition products:
Thermal decomposition or fire may produce carbon oxides, phenolic fumes, formaldehyde-containing decomposition products, irritating smoke, and solvent vapors.

Handling and Storage of PHENODUR PR 263/70B:

Handling:
PHENODUR PR 263/70B should be handled using good industrial hygiene and solvent-safe working practices.

Safe handling:
Avoid breathing vapors, mist, or spray, and avoid contact with skin, eyes, and clothing.

Ventilation:
Use adequate general ventilation and local exhaust ventilation in mixing, transfer, grinding, and coating application areas.

Fire protection:
Keep away from heat, sparks, open flames, hot surfaces, and smoking areas.
Ground and bond containers, use non-sparking tools, and prevent static discharge.

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

Storage protection:
Protect from heat, direct sunlight, moisture, ignition sources, and incompatible materials.

First Aid Measures of PHENODUR PR 263/70B:

Inhalation:
Move the person to fresh air and keep them comfortable for breathing.
Get medical attention if dizziness, headache, irritation, nausea, or breathing difficulty occurs.

Skin contact:
Remove contaminated clothing and wash the affected skin with plenty of water and soap.
Get medical advice if redness, irritation, dryness, or burning sensation develops.

Eye contact:
Rinse cautiously with water for several minutes.
Remove contact lenses if present and easy to do.
Continue rinsing and get medical attention if irritation persists.

Ingestion:
Rinse mouth with water.
Do not induce vomiting unless directed by medical personnel.
Get medical attention if discomfort occurs.

Most important symptoms:
Vapor exposure may cause headache, dizziness, drowsiness, nausea, or respiratory irritation.
Skin or eye contact may cause irritation because the product is a solventborne phenolic resin system.

Firefighting Measures of PHENODUR PR 263/70B:

Suitable extinguishing media:
Use alcohol-resistant foam, dry chemical powder, carbon dioxide, or water spray.

Unsuitable extinguishing media:
Do not use a direct high-pressure water jet because PHENODUR PR 263/70B may spread the burning liquid.

Specific fire hazards:
PHENODUR PR 263/70B is supplied as a phenolic resin solution, and its technical data identifies it as approximately 70% in butanol with a flash point around 48°C.
Solvent vapors may form flammable mixtures with air.

Hazardous combustion products:
Fire may produce carbon monoxide, carbon dioxide, phenolic fumes, irritating vapors, dense smoke, and solvent decomposition products.

Firefighting protection:
Firefighters should wear self-contained breathing apparatus and full protective clothing.

Accidental Release Measures of PHENODUR PR 263/70B:

Personal precautions:
Evacuate unnecessary personnel and avoid breathing vapors, mist, or spray.

Protective equipment:
Wear chemical-resistant gloves, safety goggles or face protection, protective clothing, and suitable respiratory protection if ventilation is inadequate.

Emergency procedures:
Remove all ignition sources and ensure adequate ventilation.
Use non-sparking tools and prevent static discharge.

Environmental precautions:
Prevent release into drains, soil, surface water, and groundwater.

Containment and cleaning:
Contain the spill with inert absorbent material such as sand, earth, or vermiculite.
Collect the absorbed material into suitable labeled containers for disposal according to local regulations.

Exposure Controls/Personal Protection of PHENODUR PR 263/70B:

Engineering controls:
Use local exhaust ventilation and general ventilation to keep vapor and mist exposure as low as possible.

Respiratory protection:
Use an organic vapor respirator if ventilation is insufficient or if vapor/mist exposure may occur.

Hand protection:
Wear chemical-resistant gloves suitable for solventborne resin systems, such as nitrile rubber gloves.

Eye protection:
Wear safety goggles or face protection during handling, mixing, transfer, grinding, or coating application.

Skin and body protection:
Wear solvent-resistant protective clothing, closed work shoes, and protective apron if splashing may occur.

Hygiene measures:
Do not eat, drink, or smoke while handling the product.
Wash hands and exposed skin after use.
Remove contaminated clothing before reuse.

Environmental exposure controls:
Avoid uncontrolled release to the environment and collect solvent-containing resin waste properly.

Identifiers of PHENODUR PR 263/70B:
INCI/Chemical Name: Curable phenolic resin
SKU: BP121918
Product name: PHENODUR PR 263/70B
Brand: PHENODUR

Properties of PHENODUR PR 263/70B:
Physical form: Liquid
Resin type: Curable phenolic resin
Product family: Phenol formaldehyde resin
Solvent/form of delivery: Approximately 70% in butanol
Non-volatile matter: 68–72%
Dynamic viscosity at 23°C: 390–530 mPa·s
Iodine colour number: Maximum 15
Density at 20°C: Approximately 1.06 g/cm³
Flash point: Approximately 48°C

Iodine Color Number: max. 15
Density (20°C): approx. 1.06 g/cm³
Non-Volatile Matter: 68 - 72 %
Dynamic Viscosity: 390 - 530 mPa.s
Flash Point: 48°C