adhesive sealant additives

Epoxy Novolac Resin (EPN/ECN)

CAS: 28064-14-4

Epoxy Novolac Resin (EPN/ECN) is a multifunctional epoxy resin derived from novolac phenol-formaldehyde condensates, providing high epoxy functionality (f > 2) and superior thermal and chemical resistance after cure. Its dense crosslink network yields adhesives and coatings with outstanding performance at elevated temperatures and in aggressive chemical environments. Novolac epoxies are commonly used in demanding industrial adhesive, electrical laminate, and chemical-resistant coating applications.

adhesive sealant additives

Epoxy Resin E44 (Bisphenol A, EEW 210-240)

CAS: 25068-38-6

Epoxy Resin E44 is a standard-grade bisphenol A diglycidyl ether (BADGE) with an epoxide equivalent weight of 210–240 g/eq and moderate viscosity, widely used in structural adhesives and composite matrices. Its balanced reactivity and adhesion to metals, concrete, and composites make it the industry workhorse for two-component epoxy systems. It cures readily with polyamine, polyamide, or anhydride curing agents to yield strong, chemically resistant bonds.

adhesive sealant additives

Epoxy Resin E51 (Bisphenol A, EEW 185-210)

CAS: 25068-38-6

Epoxy Resin E51 is a higher-purity, lower-viscosity bisphenol A epoxy resin with an epoxide equivalent weight of 185–210 g/eq, offering faster curing and improved processability compared to E44. It is a versatile base resin for solvent-free coatings, high-performance adhesives, and electrical laminates where low viscosity aids wetting and penetration. The resin delivers outstanding mechanical strength, dimensional stability, and resistance to moisture after cure.

adhesive sealant additives

Fumed Silica for Adhesives and Sealants (Hydrophilic)

CAS: 112945-52-5

Hydrophilic fumed silica is a high-purity, nanoscale amorphous silicon dioxide produced by flame hydrolysis, widely used as a thixotropic agent and reinforcing filler in adhesives and sealants. Its very high surface area (150–380 m²/g) and surface hydroxyl groups form a hydrogen-bond network that imparts thixotropy, prevents sag, and reinforces the cured adhesive. It is the primary rheology modifier for epoxy, polyurethane, silicone, and acrylic adhesive and sealant systems.

adhesive sealant additives

Glycerol Ester of Rosin (Ester Gum)

CAS: 8050-31-5

Glycerol Ester of Rosin (Ester Gum) is produced by esterification of rosin with glycerol, yielding a pale-colored resin with improved compatibility, higher softening point, and greater stability than unmodified rosin. It is a premier tackifier for hot-melt adhesives, pressure-sensitive tapes, and chewing gum bases, offering excellent tack, peel strength, and shear resistance. Ester Gum is FDA-compliant for food-contact applications and compatible with SIS, SBS, EVA, and natural rubber.

adhesive sealant additives

HDDA (1,6-Hexanediol Diacrylate) Reactive Thinner

CAS: 13048-33-4

HDDA (1,6-Hexanediol Diacrylate) is a low-viscosity difunctional acrylate reactive diluent that reduces the viscosity of UV-curable adhesive and coating formulations while contributing to crosslink density and flexibility. Its six-carbon spacer between acrylate groups imparts greater flexibility and elongation compared to shorter diol diacrylates, while its bifunctionality ensures incorporation into the crosslinked network without plasticization. HDDA is widely used in UV adhesives, UV coatings, and printing inks.

adhesive sealant additives

Hot Melt Polyamide Adhesive

CAS: 63428-84-2

Hot Melt Polyamide Adhesive is a high-performance specialty chemical additive widely used in industrial coating, adhesive, and material applications. Provides excellent performance characteristics and reliability.

adhesive sealant additives

Hybrid Sealant Polymer (SMP/STPE)

CAS: 67762-19-0

Hybrid Sealant Polymer (SMP/STPE) is a silane-terminated polyurethane or polyether designed to combine the best properties of polyurethane and silicone technologies into a single product. It offers high elongation, excellent adhesion, fast skinning, and outstanding weathering resistance with no isocyanate hazard. Used widely in construction, automotive aftermarket, and industrial maintenance, it delivers durable elastic seals on concrete, metals, and plastics.

adhesive sealant additives

Hydrogenated Rosin

CAS: 65997-06-0

Hydrogenated Rosin is produced by catalytic hydrogenation of gum or wood rosin, resulting in improved color stability, oxidative resistance, and reduced crystallization tendency compared to unmodified rosin. It is an important intermediate for producing high-quality rosin esters used as tackifiers in hot-melt adhesives, pressure-sensitive adhesives, and chewing gum bases. Its improved thermal and oxidative stability makes it suitable for demanding high-temperature adhesive applications.

adhesive sealant additives

Isophorone Diamine (IPDA) Curing Agent

CAS: 2855-13-2

Isophorone Diamine (IPDA) is a cycloaliphatic primary diamine used as a curing agent for epoxy resins, delivering non-yellowing, high-gloss coatings and adhesives with excellent UV stability. Its cycloaliphatic structure imparts higher Tg and better outdoor durability than linear aliphatic amines, while its moderate reactivity allows adequate working time. IPDA-cured epoxies are widely used in decorative floor coatings, clear adhesives, and UV-stable aerospace coatings.

adhesive sealant additives

MS Polymer (Silyl-Modified Polyether)

CAS: 67762-19-0

MS Polymer is a silyl-terminated polyether (silane-modified polyether) that combines the flexibility and adhesion of polyurethanes with the UV stability and paintability of silicones. It cures with atmospheric moisture at room temperature without isocyanates, making it an environmentally friendly choice for elastic bonding and sealing. MS Polymer-based adhesives and sealants offer excellent adhesion to most substrates including plastics, glass, metals, and painted surfaces without primers.

adhesive sealant additives

MS Polymer Sealant Base

CAS: 67674-67-3

MS Polymer Sealant Base is a high-performance specialty chemical additive widely used in industrial coating, adhesive, and material applications. Provides excellent performance characteristics and reliability.

adhesive sealant additives

Mineral Oil Defoamer for Adhesives and Sealants

CAS: 8042-47-5

Mineral oil-based defoamer is a cost-effective antifoam agent used to suppress foam formation and eliminate air entrapment in waterborne and reactive adhesive and sealant manufacturing processes. It is particularly effective in high-shear mixing, dispensing, and application operations where air incorporation can lead to voids, surface defects, and reduced bond strength. The formulation combines hydrophobic mineral oil with hydrophobic silica particles for synergistic foam knockdown and persistent antifoam performance.

adhesive sealant additives

Polyamide Wax Rheology Modifier for Adhesives

CAS: 57456-28-7

Polyamide wax rheology modifier is an organogelling agent that imparts thixotropy and sag resistance to solvent-borne, hot-melt, and reactive adhesive systems. It forms a three-dimensional gel network via hydrogen bonding that breaks down under shear for easy application and rebuilds at rest to prevent sag and settling. Polyamide wax is compatible with a wide range of resins including epoxies, polyurethanes, alkyds, and polyesters.

adhesive sealant additives

Polyetheramine D230 Curing Agent

CAS: 9046-10-0

Polyetheramine D230 is a low-molecular-weight (Mn ~230 g/mol), difunctional aliphatic amine curing agent for epoxy resins with a polyoxypropylene backbone that imparts flexibility and toughness to cured systems. It reacts with epoxy groups at room temperature or with mild heating, producing coatings and adhesives with excellent flexibility, impact resistance, and low-temperature performance. D230 is widely used in flooring systems, civil engineering adhesives, and casting resins.

adhesive sealant additives

Polyetheramine D400 Curing Agent

CAS: 9046-10-0

Polyetheramine D400 is a medium-molecular-weight (Mn ~400 g/mol) difunctional aliphatic amine with a longer polyoxypropylene chain than D230, providing higher flexibility, longer working time, and reduced exotherm in epoxy cure reactions. Its low volatility and reduced skin-sensitization potential compared to aromatic amines make it safer for industrial use. D400 is preferred for thick-section adhesives, civil engineering applications, and highly flexible epoxy systems.

adhesive sealant additives

Polyurethane Acrylate Oligomer (PUA) for UV Adhesives

CAS: 72162-39-1

Polyurethane Acrylate Oligomer (PUA) combines the flexibility and toughness of polyurethane chemistry with the fast UV-curable functionality of acrylates, delivering soft, elastic, yet adherent UV-cured adhesives and coatings. PUA-based formulations offer outstanding peel strength, elongation, and impact resistance, making them ideal for flexible electronics, medical device bonding, and pressure-sensitive UV adhesives. A wide range of grades—from soft and elastic to hard and rigid—is available.

adhesive sealant additives

Polyurethane Prepolymer (MDI-Based, NCO-Terminated)

CAS: 9016-87-9

MDI-based NCO-terminated polyurethane prepolymer is a versatile building block for one- and two-component polyurethane adhesives, sealants, and elastomers. It reacts with moisture, polyols, or amines to form tough, flexible bonds with excellent dynamic fatigue resistance. The controlled NCO content and low free MDI content make it suitable for demanding structural and elastic bonding applications in automotive, construction, and footwear industries.

adhesive sealant additives

Polyurethane Sealant Prepolymer

CAS: 9009-54-5

Polyurethane Sealant Prepolymer is a high-performance specialty chemical additive widely used in industrial coating, adhesive, and material applications. Provides excellent performance characteristics and reliability.

adhesive sealant additives

Precipitated Silica for Adhesives and Sealants

CAS: 112926-00-8

Precipitated silica is a synthetic amorphous silicon dioxide produced by wet chemical precipitation, used as a reinforcing filler, thickener, and matting agent in adhesives and sealants. It provides cost-effective viscosity and thixotropy control, improves cohesive strength, and reduces gloss in silicone, polyurethane, and polysulfide sealants. Compared to fumed silica, precipitated grades offer higher pore volume and lower cost, making them suitable for high-fill adhesive and sealant formulations.

adhesive sealant additives

Rosin Tackifier (Gum Rosin, WW/WG Grade)

CAS: 8050-09-7

Gum Rosin is a natural resin obtained by tapping pine trees, consisting primarily of abietic and related resin acids. It is a cost-effective tackifier for hot-melt adhesives, pressure-sensitive adhesives (PSA), and rubber-based adhesive formulations. Rosin and its derivatives increase tack, peel strength, and cohesion in adhesive systems while maintaining good compatibility with natural and synthetic rubbers as well as EVA polymers.

adhesive sealant additives

Rubber to Metal Bonding Agent

CAS: 9006-04-6

Rubber to Metal Bonding Agent is a high-performance specialty chemical additive widely used in industrial coating, adhesive, and material applications. Provides excellent performance characteristics and reliability.

adhesive sealant additives

ST-AddBond LP 1600

ST-AddBond LP 1600 is a Special adhesion polyester (100% active)-based Adhesion promoter. FDA food-contact approved

adhesive sealant additives

ST-AddBond LTH

ST-AddBond LTH is a Modified polyester (100% active, solid)-based Adhesion promoter. Tg 70°C