Eastman

Solventborne adhesives

While many of the applications for solventborne adhesives have been converted to hot-melt and waterborne systems, there are still many types of adhesives that require solvents. Many of the same elastomers and tackifiers used for hot-melt and waterborne applications are usable in solvent systems. The only limitation is that they must dissolve to form a stable solution at low enough viscosity to allow application.

While many solvents can be used, the most commonly used solvents for adhesive systems are toluene, heptane, acetone, n-butyl acetate, methyl ethyl ketone, methylene chloride, naphtha, and mineral spirits. In the United States, the Environmental Protection Agency has exempted acetone, methyl acetate, t-butyl acetate, and perchlorobenzen etetrafluoride from consideration as volatile organic compounds (VOCs). There is growing interest in using these solvents to partially or completely replace nonexempt solvents. Since most of the hydrocarbon and rosin resins produced by Eastman are soluble in some or all of these solvents, they are a good choice when formulating solventborne adhesives.

The common types of solventborne adhesives are pressure sensitive (used mainly for tapes and labels), nonpressure sensitive (applications such as mastics and sealants), and contact adhesive (used for footwear and construction assembly). Solventborne pressure-sensitive adhesives are normally based on styrenic block copolymers, natural rubber, styrene-butadiene rubber (SBR), and acrylic polymers. Sealants and mastics are frequently based on SBR or butyl rubber. Contact adhesives are most commonly based on polychloroprene rubber. The tackifier selection for each of these systems will depend on the base polymer used and the required performance of the system.

Visit our Tackifier Center to learn more about compatibility between elastomers and tackifiers and to understand which classes of tackifiers should be considered for a given application.

 

Product Group

Brand Name

Benefits

Hydrocarbon resins Eastotac™Light to water-clear color, excellent color stability, broad compatibility with numerous elastomers, polymers, and other resins
Endex™Increasing cohesive strength and high temperature resistance of hot melt adhesives. Compatible with all types of styrene-containing polymers
Kristalex™Water-white initial color, excellent color stability, wide product range, compatibility with a wide range of alkyd resins, plastics, styrene-containing elastomers, waxes and high vinyl acetate content EVA
Picco™

Recommended when excellent acid and moisture resistance combined with outstanding pigment wetting is vital

Piccolastic™Low initial color, wide softening point range, nontacky until melted
Piccotac™Compatible with natural and synthetic rubbers, EVA copolymers, block copolymers, polyethylene, and waxes
Piccotex™Water-white initial color, direct food contact FDA clearance for some grades, excellent thermal stability, broad compatibility
Plastolyn™Water-white initial color, excellent thermal stability, wide range of softening points, high cohesion
Regalite™Water-white initial color, direct food contact FDA clearance for some grades, excellent thermal stability, broad compatibility
Regalrez™Superior clarity, low color, thermal stability, oxidative stability, UV stability, wide compatibility
Hydrogenated rosin resins Foral™Inherent oxidation resistance, color stability, tack retention, good aging characteristics
Foralyn™Light color and color stability, good oxidation resistance, good aging characteristics
Polyolefin polymer Eastoflex™Low odor, broad range of compatibility with a variety of elastomers, polymers, and tackifying resins
Rosin resins Abalyn™Excellent compatibility with almost all polymers, tacky, high viscous
Abitol™Excellent color, low odor, good tack and adhesion, wide range of compatibility and solvency, resistance to oxidation, reactive hydroxyl group
Dresinate™Recommended for a wide variety of emulsifiers based on rosin soap
Dymerex™

Recommended to improve adhesion with less cohesion loss

Metalyn™Recommended when excellent compatibility is required
Pentalyn™Compatibility with a variety of materials, including natural and synthetic elastomers, thermoplastics, cellulose derivatives and waxes
Permalyn™Excellent gloss and pigment-wetting properties, compatible with many materials, including natural and synthetic elastomers, polymer and copolymer thermoplastics, cellulose derivatives as well as natural and hydrocarbon waxes
Poly-Pale™Recommended in applications requiring no crystallization
Staybelite-E™Inherent oxidation resistance, color stability, tack retention, good aging characteristics
Tall oil and fatty
acid derivative
Pamolyn™

Recommended in applications where low odor combined with excellent color stability is important

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