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Silquest™ A-187

CASE Ingredients Features
Excellent AdhesionLong Shelf Life
Chemical Family
Silanes

Silquest™ A-187 silane is specially formulated for use as an adhesion promoter in SPUR + * prepolymer, urethane, epoxy, polysulfide, silicone and acrylic systems for caulks, coatings, sealants and adhesives. Its epoxy functionality allows Silquest™ A-187 silane to perform as a durable epoxy ring that is reactive with many organic functions. It also offers non-yellowing adhesion in many resin systems and has proven to increase the flexibility of systems when compared to other adhesion promoters under certain conditions.

Properties

Physical Form
Liquid

Identification

CASE Ingredients Functions
Adhesion PromoterCoupling Agent

Product families

Applications

Automotive & Transportation — Bonding & Assembly
  • Transportation Assembly
Adhesives & Sealants — Industrial & Assembly Adhesives
  • Transportation Assembly

Product Families

CASE Ingredients — Additives
  • Functional Additives

Other characteristics

Brand
Silquest
End Uses

Waterborne Adhesive, Waterborne Coating, Waterborne Sealant

Features
Excellent Adhesion, Long Shelf Life
Functions
Adhesion Promoter, Coupling Agent
Compatible Polymers & Resins

Acrylics, Epoxies (EP), Polysulfide Rubber, Polyurethanes (PU), Silicones

Markets
  • Adhesives & Sealants
  • Automotive & Transportation
Appearance
Clear, pale
Solubility

Silquest A-186 silane and Silquest A-187 silane are soluble in water after hydrolysis, alcohol, acetone and most aliphatic esters at normal application levels under five percent. Hydrolysis releases methanol.

Coating Type
Waterborne Coating
Technology
CASE Ingredients
HIGHLIGHTS

Epoxy Functionality : Epoxy ring is reactive with many organic functionalities. Epoxy functionality will offer non-yellowing adhesion in many resin systems. May improve flexibility of systems vs. other adhesion promoters.; Epoxy ring is reactive with many organic functionalities.; Epoxy functionality will offer non-yellowing adhesion in many resin systems.; May improve flexibility of systems vs. other adhesion promoters.; Trimethoxy Silane Functionality : Bonds to inorganic substrates to provide excellent wet and dry adhesion. Very fast hydrolysis rate; Bonds to inorganic substrates to provide excellent wet and dry adhesion.; Very fast hydrolysis rate; Enhanced electrical properties of epoxy based electronic encapsulant and packaging materials, resulting from improved bonding between resin and substrate or filler.; An excellent candidate for waterborne applications such as acrylic and vinyl-acrylic caulks.; Improved adhesion to glass, and metal substrates can be obtained in epoxy, polysulfide, urethane and acrylic bases adhesives, sealants and caulks.; SPUR+ perpolymer applications benefit from adhesion without decrease in elongation and yellowing.; Urethane applications benefit from enhanced adhesion to glass and metal substrates, while providing improved shelf stability over amino silane alternatives.; Typical use level ranges from 0.5 to 1.5 pbw.

Adhesive & Sealant Type
  • Waterborne Adhesive
  • Waterborne Sealant
Compatible Polymers and Resins
  • Acrylics
  • Epoxies (EP)
  • Polysulfide Rubber
  • Polyurethanes (PU)
  • Silicones

Technical data

Table 1 of 1

4 rows
CharacteristicValueUnitMethod
Flash Point110°C—
Viscosity (d)3cSt—
Flash Point230°F—
Flash Point110 (230)°C (°F)ASTM D 93

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