Sumitomo 3775 POE

Features Of Sumitomo 3775 POE

1. Highly stable polyolefin elastomer with excellent melt processability for extrusion and injection molding.

2. Outstanding low-temperature flexibility and impact resistance down to –40 °C.

3. Superior compatibility with polypropylene (PP) and polyethylene (PE), enabling seamless alloy formation.

4. Low compression set and excellent long-term elastic recovery under dynamic loading conditions.

5. Halogen-free formulation compliant with RoHS and REACH regulatory requirements.

Typical Applications Of Sumitomo 3775 POE

1. Automotive interior trim components including door panels, instrument clusters, and soft-touch overlays.

2. Toughened polypropylene (TPP) compounds for bumper fascias and under-hood applications.

3. Flexible packaging films requiring seal integrity and puncture resistance.

4. Medical tubing and connectors requiring biocompatibility and kink resistance.

5. Consumer electronics housings requiring shock absorption and aesthetic surface finish.

Specifications Of Sumitomo 3775 POE

Sumitomo 3775 POE – Frequently Asked Questions (FAQ)

Q1: What is Sumitomo 3775 POE and what makes it distinct from other polyolester lubricants?

A: Sumitomo 3775 POE is a high-performance synthetic polyolester base fluid engineered for demanding refrigeration and heat transfer applications. It distinguishes itself through exceptional thermal and hydrolytic stability, low volatility, and superior miscibility with modern HFC, HFO, and natural refrigerants—particularly where long-term system reliability and low wax formation are critical.

Q2: Is Sumitomo 3775 POE compatible with common elastomers and sealing materials used in refrigeration compressors?

A: Yes, Sumitomo 3775 POE demonstrates good compatibility with typical refrigeration-grade elastomers including nitrile rubber (NBR), hydrogenated nitrile (HNBR), and EPDM. Compatibility should always be verified under actual operating conditions—especially at elevated temperatures or in the presence of aggressive refrigerant blends—as swelling or shrinkage behavior may vary depending on formulation and service life.

Q3: How does moisture sensitivity affect the handling and storage of Sumitomo 3775 POE?

A: As a polyolester, Sumitomo 3775 POE is hygroscopic and can absorb ambient moisture over time. To maintain performance integrity, it should be stored in sealed, dry containers under inert gas (e.g., nitrogen) when possible, and handled using moisture-controlled procedures—especially during charging into evacuated systems. Prolonged exposure to humid environments may compromise acid number stability and promote hydrolysis.

Q4: Can Sumitomo 3775 POE be blended with other lubricants or additives?

A: Sumitomo 3775 POE is formulated as a base fluid and is typically used with carefully selected antioxidant, anti-wear, and metal deactivator packages. Blending with mineral oils, alkylbenzenes, or other POEs is not recommended unless validated by comprehensive compatibility and stability testing, as unintended interactions may lead to phase separation, additive depletion, or reduced lubricity.