SYNTHOESTER 1018 is a highly branched, saturated polyester containing hydroxyl groups, modified with a low molecular weight fatty acid. Here are its key characteristics, properties, and applications:
Characteristics:
- Highly branched, saturated polyester containing hydroxyl groups, modified with a low molecular weight fatty acid.
Supplied as:
- A = 75% in xylene.
- B = 75% in butyl acetate.
Properties:
- Hydroxyl value: 155-175 (in-house method AV-F-H003).
- Hydroxyl content: Approximately 5.0% (relative to nvc).
- Viscosity:
- A: 130-250 mPas (50% Xylene).
- B: 3,000-4,500 mPas (as supplied) (in-house method AV-F-V005).
- Iodine colour value:
- A: < 3 (50% Xylene).
- B: < 3 (50% Buac) (in-house method AV-F-F007).
- Non-volatile content: 75 +/- 1% (as supplied) (in-house method AV-F-F003).
- Acid value: < 15 (relative to nvc) (in-house method AV-F-S001).
- Flash point in °C: Approximately 30 (as supplied) (in-house method AV-F-F006).
- Density in g/ml: A: 1.03, B: 1.08 (as supplied) (in-house method AV-F-D001).
Properties and Fields of Use:
- Used in combination with aliphatic or aromatic polyisocyanates for air- and stove-drying two-component coatings with good weathering resistance.
- Mainly used in the furniture sector when combined with Desmodur L or HL.
- Can also be used with Desmodur N for high-grade outside coatings.
- Suitable as a pigment paste resin due to its good pigment loading and compatibility with many binders.
Pigmentation:
- Compatible with all neutral pigments and fillers.
Mixing Ratio with Polyisocyanate:
- Best results achieved with a mixing ratio of 100 parts by weight of SYNTHOESTER 1018 to 80 parts by weight of Desmodur L - 67% or 55 parts by weight of Desmodur N - 75%.
Dilutability:
- Can be diluted in any proportion with aromatic solvents, esters, ketones, and glycol ether esters. Ensure only anhydrous solvents and solvents that do not contain any hydroxyl groups are used.
Compatibility:
- Compatible with various polyisocyanates, including Desmodur N, L, HL, IL, and VL. Also compatible with other Synthoester products and physically drying binders like NC-chips or copolymers.
Storage:
- In closed containers, protected from moisture, it has an unlimited shelf-life.