SI Group Polymer Modifiers


SI Group Polymer Modifiers are the industry's leading compatibilizers, which are also known as functionalized polymers, coupling agents or impact modifiers. They are used in applications such as PVC calendaring, PVC profiles, engineering thermoplastics compounding, thermoplastic elastomers, epoxy adhesives and coatings, masterbatches, polyolefin compounding, filler coupling, solvent adhesives, and alloy compatibilization.

Problems Solved

Difficulties dispersion of polar fillers in non-polar polypropylene resins
Poor adhesion of fillers to the polypropylene matrix
High moisture absorption in polyolefin products and resins
Creep and low flexural strength in thermoplastic products and formulations
Low impact resistance and cracking issues in polyolefins and engineered resins
Long lead time and supply issues of polyolefin compatibilizers and coupling agents

15 Products
POLYBOND™ 3200 container
Workhorse coupling agent for filled polypropylene and polyamide / polypropylene blends. Can be used with glass, mineral, or cellulose fiber reinforcing materials.
POLYBOND™ 3009 container
Maleic anhydride modified PE coupling agent for glass and mineral filled systems.
POLYBOND™ 3000 container
POLYBOND™ 3000 is a high-efficiency coupling agent that provides improved strength and physical properties when used in various polypropylene systems.
POLYBOND™ 3029 container
Maleic anhydride modified HDPE coupling agent ideal for use in wood fiber composites where improved strength and reduced water uptake is essential.
POLYBOND™ 3349 container
Coupling agent and compatibilizer for linear low density polyethylene and polyamide blends; excellent for use in composites with high levels of glass or mineral fillers.
Displaying 1 - 5 of 15 Results
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SI Group Polymer Modifiers Articles
SI Group Polybond thumbnail
PB 3349 allows for high load rates of HFFR without sacrificing tensile strength, tensile modulus and elongation properties of your compounds.
SI Group Polybond 3200 thumbnail
The POLYBOND™ 3200 from SI Group is legendary for its performance as a coupling agent in plastic applications. The 3200 outperforms other coupling agents with superior thermal stability, color control and less degradation.
POLYBOND™ and Recycling of Polyolefins thumbnail

The SI Group portfolio of POLYBOND™ coupling agents improves mechanical performance for recycled filled composites by strengthening the coupling bond.