Styrene-Isoprene-Styrene Supplier Malaysia
- Also known as
- SIS
- SIS Block Copolymer
- SIS Rubber
Styrene-isoprene-styrene block copolymer is a thermoplastic elastomer commonly abbreviated as SIS. Its soft isoprene blocks provide flexibility and tack, while the styrene end blocks provide physical reinforcement without conventional vulcanisation.
Commercial choices include linear, radial and oil-extended grades supplied as pellets, porous granules or crumb. Buyers normally compare styrene content, melt or solution behaviour, tensile properties, volatile matter and compatibility with tackifier oils and resins.
SIS is used in pressure-sensitive adhesives, hot-melt systems, tapes, labels, hygiene articles, sealants and flexible compounds. It is a separate polymer from SBS, SEBS and solid styrene-butadiene rubber, so those materials should not be treated as aliases or substitute grades.
For a Malaysian supply enquiry, send the application, current reference grade or target properties, required structure, quantity and delivery location. Availability, packing and technical documentation are confirmed with the quotation.
- Grade
- linear, radial, oil-extended, adhesive
- Appearance
- white to pale cream pellets, porous granules or crumbs depending on grade
Styrene-Isoprene-Styrene Block Copolymer grades and forms
We supply several forms to suit different formulating and dosing setups. If you need a size that is not listed, ask us.
| Grade | Form | Assay | Typical use | Packing |
|---|---|---|---|---|
| Linear SIS block copolymer | pale pellets or porous granules | Block structure, styrene content, melt flow and mechanical properties matched to the formulation | Pressure-sensitive adhesives, tapes, labels and elastic compounds requiring controlled tack and flexibility. | Bag format is confirmed with the quotation. |
| Radial SIS block copolymer | pale pellets or granules | Molecular architecture, viscosity and strength controls confirmed by grade | Hot-melt adhesive and polymer-modification systems requiring a different balance of cohesion, processing and tack. | Bag or bulk bag requirement is confirmed with the offer. |
| Oil-extended SIS grade | soft pellets, granules or crumb | Oil level, viscosity and mechanical profile matched to the converting process | Elastic, sealant and adhesive compounds requiring softer processing and adjusted compound hardness. | Bag packing is confirmed against the selected grade. |
How to buy styrene-isoprene-styrene block copolymer from ChemTrade
Request a quote for styrene-isoprene-styrene block copolymer
Use the form below to request a quotation. You can also email sales@chemtrademalaysia.com or send us a message on WhatsApp.
Specifications
| Parameter | Value | Method |
|---|---|---|
| Polymer identity | styrene-isoprene-styrene thermoplastic block copolymer | — |
| Commercial structures | linear or radial architecture depending on grade | — |
| Common grade controls | styrene content, melt flow, solution viscosity, tensile behaviour and volatile matter | — |
| Extension options | neat or oil-extended grades | — |
| Physical form | pellets, porous granules or crumb according to producer and grade | — |
Styrene-Isoprene-Styrene Block Copolymer applications
Safety and handling
Keep bags sealed in a cool, dry place away from heat and contamination. Protect pellets or crumb from prolonged exposure before compounding.
Common questions about styrene-isoprene-styrene block copolymer
What is styrene-isoprene-styrene block copolymer used for?
SIS is widely used in pressure-sensitive and hot-melt adhesives, tapes, labels, hygiene constructions, sealants and flexible thermoplastic compounds.
Is SIS the same as SBS or SEBS?
No. SIS uses isoprene mid-blocks, SBS uses butadiene, and SEBS is a hydrogenated styrenic block copolymer. Their ageing, tack and processing profiles differ.
What is the difference between linear and radial SIS grades?
The polymer architecture changes solution behaviour, melt processing, cohesion and compound performance. Select the structure against the adhesive or elastomer formulation target.
When is oil-extended SIS requested?
Oil-extended grades are considered when a softer compound, easier processing or adjusted hardness is required, but the extension level must match the formulation.
What information should be sent for an SIS quotation?
Provide the application, current grade or performance target, polymer structure, key flow or viscosity requirement, quantity, packing preference and delivery point.