Energy savings plus mechanical reinforcement and rheology control

High Solids, Low Viscosity, Sprayable Solvent Borne SBC Adhesive

Adhesives Formulation

Applicable Type

Solvent borne Adhesives

Applicable Base Polymer

Styrene Block Copolymers, SBC (SBS, SEBS, SEPS, SIS)

Applicable Industrial Sectors

Automotive , Buildings & constructions

Applicable Base Polymer Properties

Styrene block copolymers (SBCs) offer cohesion, strength, and heat resistance for both adhesives and sealants. The styrene phase forms a physically crosslinked network within the adhesive at room temperature. Of the SBCs, styrene butadiene styrene has the highest shear strength and moderately good peel strength. Dynasol Solprene® 4302 is a linear SBS copolymer, contains 31% of styrene, and it develops excellent cohesive strength / tack balance, and offers reduced viscosity. Solprene® 1205 is an S-SBR with excellent to improve surface wetting and tack.

Typical Formulation Ingredients

Ingredient

Parts by weight

Linear styrene block copolymer (Solprene 4302 from Dynasol)

xxxx

S-SBR styrene block copolymer (Solprene 1205 from Dynasol)

xxxx

Tackifier (styrenated polyterepene)

xxxxx

Solvent (hexane)

xxxx

Solvent (toluene)

xxxx

Solvent (acetone)

xxxx

Antioxidant

xxx

(Source: Dynasol)

Typical Properties

Properties

Solids, %

Viscosity at 25°C, cps

xxx

T-peel, lb-in, canvas-to-canvas:

• 24 hrs

• 72 hrs

Processing

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Resulting Properties

This adhesive formula offers reduced viscosity (400 cP) for excellent sprayable application, superior cohesion and adhesion balance in a wide range of substrates. SBC based adhesives have a good combination of low cost, adhesion, physical properties, and processing characteristics.

Tips and Tricks

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