ALNOVOL® PN 320/PAST

Paint:

• The use of ALNOVOL PN 320/PAST results in a lighter color. ALNOVOL® PN 430 coatings are harder and possess better water resistance and stability to aging compared to coatings produced with ALNOVOL PN 320/PAST.

Rubber:

• ALNOVOL® PN 320/PAST is suitable for reinforcing natural rubber, styrene-butadiene rubber, and nitrile rubber. ALNOVOL® PN 320/PAST is odorless and an environmentally friendly product due to its very low content of free phenol. The resin is absorbed by the rubber mix rapidly and gives a strong plasticizing effect.

Paint:

• ALNOVOL® PN 320/PAST dries by solvent evaporation. It is commonly applied as a solution in ethanol. A solution of ALNOVOL® PN 320/PAST dries very rapidly to hard coatings with good resistance to water, weak acids, and also petrol, mineral oils, and tar. Coatings are weakly yellowish and possess moderate resistance. The addition of small amounts of plasticizing components, such as suitable alkyd resins or polyvinyl butyral, has proven to be an effective way of modifying.

Spirit Varnishes:

• ALNOVOL® PN 320/PAST serves as a binder for fast-drying spirit varnishes. Such varnishes are used, for instance, in iron foundries for coating molds and for coating toys and other consumer goods. Other fields of application include brewery enamels for vats and barrels and French polish.

Coatings with resistance to petrol and mineral oils:

• ALNOVOL® PN 320/PAST is combined with the PHENODUR® PR 373 or PR 263 and, if necessary, plasticized by alkyd resins and/or polyvinyl butyral, usable for the manufacture of coatings that dry by solvent evaporation. Such coatings are resistant to petrol and mineral oils and are used for protecting the interior of tanks, storage containers, pipe systems, and machine housings.

Powder Coatings:

• In combination with type 2 or 3 epoxy resins, ALNOVOL® PN 320/PAST powder coatings with improved heat and chemical resistance as well as high gloss are feasible. Calculation on OH-equivalent is not possible, but the ratio is approximately 60:40 (epoxy: PN 320) weight by weight.

Uses:

• Reinforcing rubber.
• Powder Coating.
• Spirit lacquers, petrol-resistant coatings, varnishes.

Rubber:

• ALNOVOL PN 320/PAST should be dosed at a level of 10 to 20 parts by weight to 100 parts by weight of rubber. Higher additions are possible. For curing hexamethylenetetramine or other methylene donors, such as CYREZ® 963 or 964 LF, are required. For proper curing, a resin to hardener ratio of 7:3 in the case of CYREZ resin is recommended. In the case of hexamethylenetetramine, a ratio of 9:1 works best. The resin can be incorporated into the rubber together with fillers, antioxidants, zinc oxide, and stearic acid in the first mixing stage. For better dispersion, the temperature should be raised to more than 120°C. The hardener should be added together with the vulcanizing system in the second mixing stage. The reinforced vulcanizate has a higher modulus, increased hardness, and better resistance to tear propagation.

Paint:

• ALNOVOL PN 320/PAST is dissolved at normal temperature in alcohols or mixtures of alcohols, ketones, esters, and glycol ethers and, if necessary, mixed with solutions of the modifying resins mentioned above.

At temperatures up to 25°C, storage stability packed in original containers amounts to a standard of 540 days. The expiration date may be extended, and the COA can be updated after QC testing of retained samples, but this is only applicable to material in Allnex possession.