16# Granular C9 Petroleum Resin

No. 16 granular carbon nine petroleum resin is a thermoplastic resin made by polymerization reaction with C9 fraction in the process of petroleum cracking as the main raw material. The following is a detailed introduction of the product:

1. Basic characteristics

- Appearance: Usually light yellow to amber solid particles (No. 16 particles may refer to a specific particle size range, such as about 1.6mm).

- Softening point: Depending on the process, it is generally between 80-150℃ (common models are 100-120℃).

- Molecular weight: medium (about 1000-3000), with good solubility and compatibility.

- Stability: Acid and alkali resistant, but long-term high temperature exposure should be avoided to prevent oxidation.

2. Main application areas

- Adhesive industry: As a tackifying resin, it is used in pressure-sensitive adhesives, hot melt adhesives, etc. to improve initial adhesion and lasting adhesion.

- Coatings: Enhance the adhesion, gloss and drying properties of paints and inks.

- Rubber processing: as a softener or reinforcing agent, it improves the processability and wear resistance of rubber products.

- Others: can be used for asphalt modification, waterproof materials, etc.

3. The meaning of No. 16 particles

May refer to:

- Particle size: such as 16 mesh (about 1.18mm) or a model marked by a specific manufacturer.

- Softening point grade: Some manufacturers use 16 to indicate a softening point of about 100-110℃.

- Customized model: It is recommended to consult the supplier for specific technical parameters.

4. Storage and transportation

- It needs to be sealed and stored in a cool and dry place to avoid moisture absorption or high temperature agglomeration.

- Pay attention to fire and moisture prevention during transportation, and treat it as a non-hazardous chemical (the specific details are subject to the test report).

5. Purchase suggestions

- Test indicators: focus on whether the softening point, color (Gardner), acid value, etc. meet the requirements.

- Compatibility test: test the mixing effect with the base material (such as SBS, EVA, etc.). - Environmental protection: If export or high-end application is required, confirm whether it meets RoHS/REACH and other standards.

Storage Method of 16# Granular C9 Petroleum Resin
1. General Storage Instruction
16# Granular C9 Petroleum Resin is a solid low-melting thermoplastic resin with soft particles. It tends to stick and agglomerate under high temperature. Long-term moisture exposure or sunlight will cause oxidative discoloration and performance degradation.
This product is not a hazardous chemical. However, improper storage conditions will directly affect the production performance of hot melt adhesives and pressure-sensitive adhesives. It shall only be stored in a dedicated indoor warehouse and outdoor stacking is prohibited. Keep it separated from oxidizing substances, acids, alkalis and other chemical raw materials. Handle packages gently during loading and unloading to avoid material leakage. Follow the "first-in, first-out" principle for inventory management.
2. Basic Storage Operation Points
-Environment selection: The warehouse shall be ventilated and shaded with curtains installed on windows. Keep away from heat sources such as boilers, heating pipes and hot air ducts. No smoking, open flame cutting or welding is allowed inside the warehouse.
-Package management: The product is normally packed in paper-plastic composite bags lined with PE film. Tighten and seal the bag mouth if the resin is not used up at one time. Replace with new sealed bags immediately for damaged packages to prevent moisture and dust ingress.
-Stacking requirements: All goods shall be placed on plastic pallets instead of directly on the ground. Sufficient fire exits shall be reserved without blockage.
-Shelf life: The shelf life is 12 months under standard sealed storage conditions. Test the softening point and color of expired materials before production.
3. Key Warehouse Control Parameter Table

Control Item	Storage Standard	Control Purpose
Ambient warehouse temperature	Normally ≤30℃, short-term maximum ≤33℃	Excessively high temperature softens and agglomerates particles, causing feeding failure
Relative humidity of warehouse	40%~70%	Excessive humidity leads to water absorption, higher acid value and weakened adhesion performance
Distance from ground & wall	≥10cm above ground, ≥30cm away from walls	Isolate moisture from ground and walls to avoid damp packages at the bottom
Stacking height	Max. 8 layers for 25kg bags; max. 2 layers for bulk ton bags	Prevent permanent compaction and agglomeration of bottom resin
Light condition	Fully shaded, no direct sunlight	UV rays accelerate resin oxidation and deepen color

4. Handling of Abnormal Conditions
-Slight agglomeration: Place the resin in a cool area to loosen naturally before normal use. Severely hardened resin due to high temperature shall be stored separately and can only be used after passing inspection.
-Moisture prevention in rainy seasons: Turn on warehouse dehumidifiers, reduce window ventilation, and increase daily inspection frequency of temperature and humidity.
-Leakage treatment: Collect spilled resin into clean sealed bags for priority production; do not mix with materials of other batches.