Hydrogenated Styrene Isoprene

Description

Hydrogenated Styrene Isoprene is a very shear stable viscosity modifier (SSI 12).This high quality product is designed for use in the formulation of top multi grade oils.It can enhance performance and lives up to the high performance specifications demanded for modern diesel and gasoline engine oils.

Hydrogenated Styrene Isoprene is a solid powder polymer.It readily dissolves in refined mineral oils.

Hydrogenated Styrene Isoprene is designed for using in multi grade engine oils which need to live up to high performance requirements. It can be used in mineral,semi-synthetic and full synthetic grades.

Hydrogenated Styrene Isoprene is a premium product designed to live up to the most demanding specifications in the market.

– It ensures wear protection due to its very good shear stability ( SSI 12);

– Enhanced low temperature operation and optimal high temperature viscosity contribution throughout the lifespan of the oil;

– It is supplied in a powder form,which makes it easy to dilute.

Customized lubricant additive formulas to help leading brands in the high-end market 🌍🏭
In the high-end lubricant market, standardized formulas can no longer meet all needs. Shanghai Minglan Chemical Co., Ltd. provides a full range of customized lubricant additive solutions to help high-end lubricant factories create unique formulas and enhance product competitiveness.

📌 Customized high-performance lubricant solutions based on equipment conditions & target markets
📌 Extreme environmental adaptability – ensure stable performance in hot deserts & cold regions
📌 Laboratory R&D support – tribology optimization, engine simulation testing, viscosity & volatility control
📌 Global high-end certification – in line with strict standards such as API, ACEA, ILSAC, VW, MB, ISO, etc.
📌 Modern production base – long-term stable supply, batch consistency control

📩 Contact us to get your exclusive lubricant additive formula!

🔬 Customized formulation support in the laboratory
Our laboratory can provide complete solutions from formulation development to finished product performance testing according to customer needs:
✅ Engine simulation test (Sequence IIIH, IVB, VIE, VIF) – Ensure engine cleanliness & long life
✅ Tribological optimization (Four-Ball, SRV, FZG) – Lubrication optimization for high-end racing & luxury car engines
✅ Low temperature fluidity test (CCS, MRV, ASTM D4684) – Ensure smooth cold start of lubricants in extremely cold (-40°C) environments
✅ High temperature oxidation stability test (RPVOT, ASTM D2272) – Ensure that lubricants are durable under high temperature (50°C+) conditions
✅ Viscosity & volatility optimization (HTHS, Noack, ASTM D5800) – Ensure that lubricants are stable at high temperatures and not easy to volatilize

Why choose Shanghai Minglan Chemical Co., Ltd.?
✔ Exclusive customization – Through laboratory R&D support, we create unique formulas that meet customer brand positioning & market needs.
✔ High-end standards – Meet the latest international standards such as API SP, ACEA C5, MB 229.71, VW 508.00/509.00, ILSAC GF-6.
✔ Extreme environment adaptability – Suitable for the extreme heat of the Middle East (50°C+) and the extreme cold of Russia (-40°C).
✔ High-end lubricant market experience – Provide customized additive solutions for many high-end brands & factories.
✔ Long-term stable supply – Modern production base to ensure stable batches & continuous supply.

📩 Contact us now to get your exclusive lubricant additive formula!

Hydrogenated Styrene-Isoprene (HSI) refers to a type of hydrogenated block copolymer that consists of alternating blocks of styrene and isoprene units, where the isoprene segments are hydrogenated to improve the polymer’s stability and performance. This material is part of the broader family of styrene-isoprene block copolymers (SIS), with hydrogenation further enhancing the material properties by making the polymer more resistant to oxidation, heat, and chemical degradation.

Structure and Chemistry:

• Styrene-Isoprene Block Copolymer (SIS): The polymer is typically structured with polystyrene (styrene blocks) at the ends, and polyisoprene (isoprene blocks) in the middle. These are typically represented as S-I-S, where “S” stands for styrene, and “I” stands for isoprene.
• Hydrogenation: In hydrogenated versions, the polyisoprene blocks (I) are hydrogenated to form a polyethylene-like structure, turning the double bonds in the isoprene segments into single bonds. This modification improves the thermal stability, chemical resistance, and overall durability of the polymer, making it more suitable for demanding applications.

Key Properties of Hydrogenated Styrene-Isoprene (HSI):

1. Thermal Stability:
   • Hydrogenation significantly improves the heat resistance of the polymer. While non-hydrogenated styrene-isoprene copolymers (SIS) are sensitive to heat, hydrogenated styrene-isoprene copolymers (HSI) exhibit better resistance to high temperatures and can maintain their physical properties over a broader range of temperatures.
2. Improved Chemical Resistance:
   • The hydrogenated form of the copolymer provides better chemical stability, including increased resistance to oxidation, UV light, and other environmental factors. This makes it ideal for applications exposed to harsh conditions.
3. Enhanced Durability:
   • The hydrogenation process reduces the vulnerability to degradation that occurs with non-hydrogenated versions, enhancing the polymer’s service life and making it more suitable for long-term use.
4. Flexibility and Elastomeric Properties:
   • Hydrogenated styrene-isoprene copolymers retain the elastomeric properties of the original styrene-isoprene copolymer, offering good flexibility, stretchability, and the ability to return to their original shape after deformation. This makes them ideal for use in applications requiring rubber-like properties.
5. Low Glass Transition Temperature (Tg):
   • The polyisoprene segments provide a low glass transition temperature (Tg), which contributes to the flexibility of the material at lower temperatures.
6. Toughness:
   • The polymer offers good impact resistance and toughness, which is enhanced by the hydrogenation process, making it suitable for applications requiring high mechanical strength.

Applications of Hydrogenated Styrene-Isoprene (HSI):

1. Pressure-Sensitive Adhesives (PSAs):
   • Hydrogenated styrene-isoprene copolymers are widely used in adhesive formulations, particularly pressure-sensitive adhesives (PSAs) for tapes, labels, and other sticky products. Their excellent adhesion properties, combined with good flexibility and resistance to temperature extremes, make them ideal for such applications.
2. Footwear:
   • Used in the manufacture of soles and footwear components, hydrogenated styrene-isoprene copolymers offer durability, flexibility, and comfort, providing rubber-like properties without the disadvantages of traditional rubber, such as poor heat resistance.
3. Hot Melt Adhesives:
   • These copolymers are used in hot melt adhesives (HMAs) because they provide strong bonds to a variety of substrates, as well as high adhesion strength, especially on non-polar surfaces like plastics and metals.
4. Thermoplastic Elastomers (TPEs):
   • Hydrogenated styrene-isoprene copolymers are used to create thermoplastic elastomers (TPEs), which combine the processability of thermoplastics with the elasticity of rubbers. These materials are used in a wide range of automotive, consumer goods, and industrial applications.
5. Rubber Compounding:
   • In automotive and industrial applications, hydrogenated styrene-isoprene can be used as a modifier in rubber formulations to improve properties such as tensile strength, abrasion resistance, and flexibility.
6. Sealants and Gaskets:
   • The elasticity and chemical resistance of hydrogenated styrene-isoprene make it suitable for sealants and gaskets, particularly where high-performance, long-lasting seals are needed.
7. Coatings and Paints:
   • In some coatings formulations, hydrogenated styrene-isoprene copolymers contribute to film-forming and adhesion properties, improving the durability and resistance to weathering of paints and coatings.
8. Medical and Personal Care Products:
   • HSI copolymers are used in personal care products, including cosmetics and skin adhesives, due to their skin compatibility, softness, and flexibility.

Benefits of Hydrogenated Styrene-Isoprene (HSI):

1. Improved Heat and Oxidative Resistance:
   • By hydrogenating the isoprene block, HSI copolymers offer superior heat and oxidative stability, making them suitable for high-performance applications where resistance to heat and degradation is critical.
2. Flexibility at Low Temperatures:
   • Hydrogenated styrene-isoprene copolymers maintain their flexibility even at low temperatures, which makes them ideal for use in environments that experience a broad range of temperature fluctuations.
3. Enhanced Durability:
   • The material’s resistance to ozone, UV degradation, and chemical attacks enhances the longevity of the products in which it is used, making it more reliable in demanding applications.
4. Rubber-Like Properties Without Crosslinking:
   • Unlike traditional rubbers, HSI offers rubber-like elasticity without the need for crosslinking, enabling it to be processed like a thermoplastic and molded into complex shapes more easily.
5. Environmental and Economic Benefits:
   • Hydrogenated styrene-isoprene copolymers offer lower environmental impact compared to non-hydrogenated versions, particularly because they are more stable, requiring fewer additives for stabilization and extending the product’s usable life.

Considerations When Using Hydrogenated Styrene-Isoprene:

1. Compatibility with Other Additives:
   • It’s important to test the compatibility of HSI with other polymers, plasticizers, and additives used in a formulation, as incompatibilities may affect performance or processing.
2. Processing Conditions:
   • The processing conditions, including temperature and shear rates, must be optimized to achieve the desired properties and ensure the copolymer’s full performance potential.
3. Cost:
   • Hydrogenated styrene-isoprene copolymers are generally more expensive than non-hydrogenated SIS copolymers due to the additional hydrogenation process. Therefore, it is important to balance cost with performance benefits for each specific application.

Conclusion:

Hydrogenated Styrene-Isoprene (HSI) copolymers are high-performance materials that combine the benefits of styrene-isoprene block copolymers with enhanced thermal stability, chemical resistance, and flexibility due to hydrogenation. These properties make them ideal for use in a variety of applications, including adhesives, thermoplastic elastomers, footwear, and sealants, where long-term durability and reliability are required. Their versatility, along with the ability to maintain elasticity and withstand harsh environmental conditions, makes HSI a valuable material in many industries.